identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
03E64B08E32BFFF785855869FA27EC54.text	03E64B08E32BFFF785855869FA27EC54.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium	<div><p>Key to the species of Micridium (excluding M. angulicolle, M. lineatum, M. rhodeanum and M. vittatum)</p><p>1. Pronotum with two distinct linear depressions............................................................... 2</p><p>- Pronotum without linear depressions but sometimes with puncture depressions of variable size arranged in groups......... 7</p><p>2. Pronotal linear depressions +/– parallel (Figs. 17, 28).........................................................3</p><p>- pronotal linear depressions clearly narrowing anteriorly (Figs. 19, 23, 27, 30)......................................4</p><p>3. Male intercoxal process of metaventrum with four medial setae (Fig.97)............................. quadridens sp. n.</p><p>- Male intercoxal process of metaventrum without projecting setae (Fig. 95)......................... attenboroughi sp. n. (These two species are very similar and difficult to separate on other criteria)</p><p>4. Pronotal linear depressions sinuous and reaching past the midpoint..................................... oweni sp. n.</p><p>- Pronotal linear depressions shorter, barely reaching the midpoint................................................5</p><p>5. Dark species with long antennae (Fig. 44) (mesocoxae widely separated (Fig. 57)......................... elegans sp. n.</p><p>- Paler yellowish brown species, antennae shorter.............................................................6</p><p>6. Mentum sides +/– parallel (as Fig. 41)...................................................... halidaii (Matthews.)</p><p>- Mentum sides narrowed towards base (Fig. 35).................................................. boliviense sp. n.</p><p>7. Mesocoxae almost contiguous, separated by a narrow keel.....................................................8</p><p>- Mesocoxae not contiguous, more widely separated..........................................................11</p><p>8. Mentum sides =/– parallel (as Fig. 41).....................................................................9</p><p>- Mentum sides narrowed towards base (as Fig. 35)...........................................................10</p><p>9. Large species (Fig. 12)...................................................................... newtoni sp. n.</p><p>- Smaller species (Fig. 15).................................................................... proprium sp. n.</p><p>10. Pronotum with well marked circular pits (Fig. 21)................................................. foveatum sp. n.</p><p>- Pronotum with well marked reticulation but without circular pits (Fig. 24).............................. thayerae sp. n.</p><p>11. Mesocoxal separation narrower (Fig. 58)........................................................ hilli (Johnson)</p><p>- Mesocoxal separation wider (Figs. 47, 53).................................................................12</p><p>12. Metepiventral suture short (as Fig. 62)........................................................ inornatum sp. n.</p><p>- Metepiventral suture long (Fig. 61)............................................................. johnsoni sp. n.</p></div>	https://treatment.plazi.org/id/03E64B08E32BFFF785855869FA27EC54	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E32BFFF085855DC8FCB1E9E5.text	03E64B08E32BFFF085855DC8FCB1E9E5.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium Motschulsky 1869	<div><p>Genus Micridium Motschulsky, 1869</p><p>Micridium Motschulsky, 1869 . Type species Trichopteryx vittata Motschulsky, 1845 .</p><p>Dilinium Casey, 1924 . Type species Dilinium rhodeanum Casey, 1924 . Synonymised by Johnson (2001). Micridina Johnson, 1969 . Type species Micridina hilli Johnson, 1969 . Syn. nov.</p><p>Diagnosis. Narrow, moderately convex, somewhat shining and finely pubescent insects, distinguished by the possession of carinae following the line of the mesoventral/mesepiventral suture (Figs. A, 47–60). Reticulation cells oriented to follow the same line occur not uncommonly in other members of the family but without forming distinct parallel sided carinae. When the suture is more marked a single line is usually present as in some members of the Nanosellini and Discheramocephaliini which are quickly separated from Micridium by the criteria distinguishing those tribes. (Hall 1999; Grebennikov 2008; Grebennikov 2009; Darby 2016).</p><p>Additional non-diagnostic characters are as follows: antennae with 11 antennomeres, 1 &amp; 2 enlarged to form a pedicel, 3–8 either ovoid or elongate, 9–11 a loosely jointed club, 10 &amp; 11 with sensillae either single or branched (Figs. 42–46). Pronotum with or without a pair of linear depressions (never with either a single median linear depression or three linear depressions) and either additionally or independently with or without groups of setal pits. (Figs. 17–32). Mentum either +/– square widened at anterior margin (Figs. 39–41) or straight sided and clearly narrowed towards base (Figs. 33–38). Submentum usually with 3, rarely 4 setae. Scutellum base curved with or without two or more basal pits (Figs. 100–101). Elytral humeri with or without semi–circular setal pits, sutural margin entire.</p><p>Mesoventrum with two carinae following the lines of the mesoventral/mesepiventral sutures (Fig. A). Mesoventral keel sometimes extending between the mesocoxae for a short distance onto the metaventrum (Fig. 48, 56), and anteriorly to the mesoventral collar, the anterior extension sometimes widened and split medially to form two separate carinae (Fig. 59). Mesocoxae either almost contiguous (Figs. 48, 49, 50, 56) or separated by as much as +/– half their width (Figs. 47, 53, 57, 58). Mesoventral collar, extending onto the humeri which, if present, are either rounded or, more often, toothed. Mesepiventrum with or without distinct reticulation, posterior angles smoothly rounded (Figs. 50, 56, 58) or angled strongly (Fig. 53) or slightly (Figs. 49, 55).</p><p>Metaventrum with or without clear reticulation, with distinct metepiventral sutures running posteriorly from the sides of the mesoventrum parallel to the lateral margins or turning inwards posteriorly, either short, or long sometimes reaching the metacoxae (Figs. 61–71); the posterior intercoxal process with two small teeth at the corners (Fig. 95), lacking in some males which possess a fringe of 4–30 flattened setae sometimes extending as far as the posterior margin of the metacoxal plates (Figs. 91–94, 96–99).</p><p>Abdomen with six visible ventrites. Pygidium composed of tergites IX and X which are not fused, X with a strong apical tooth (Fig. 102).</p><p>Wings of usual ptiliid form either present or absent.</p></div>	https://treatment.plazi.org/id/03E64B08E32BFFF085855DC8FCB1E9E5	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E32CFFF085855B09FEE7EC8F.text	03E64B08E32CFFF085855B09FEE7EC8F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium angulicolle (Fairmaire 1858) Fairmaire 1858	<div><p>Micridium angulicolle (Fairmaire, 1858) as Ptilium angulicolle</p><p>(Figs. 1, 29)</p><p>Habitus Fig. 1. Length 0.52 mm. Colour: dark yellowish brown, antennae and legs yellow, elytra transluscent. Antonnomeres 3–11 length 0.19 mm. Width across eyes 0.16 mm. Pronotum length. 0.13 mm, width 0.18 mm, widest in anterior half, strongly punctured and pubescent, and without distinct linear depressions, lateral margins sinuate behind middle, Fig. 29. Elytra length, 0.33 mm, width 0.22 mm, sides evenly rounded, widest at middle, less strongly punctured and pubescent than the pronotum, shining. Wings visible through the elytra.</p><p>Remarks. The description, figure and measurements are based on the syntype in BMNH. This is mounted on a small piece of clear mica(?) attached to a card with the rear corners cut off. Labels are present as follows: ' angulicolle Brisout 1866 ' (in Matthews' hand, back corners also cut off); ' angulicolle Type from M. Brisout de Barneville France 1866' (in Matthews' hand on blue card with the rear corners cut off); '2239' (Matthews/Mason collection number); ' Matthews coll. 1904 - 120' (BMNH accession number) and 'Syntype' (added by BMNH). (Fig. 1).</p><p>Details of the ventrum, viewed through the mount, were not sufficiently clear to enable positive determination to Micridium and for the reasons given above no attempt was made to detach the insect or to dissect it so that the sex is not known.</p></div>	https://treatment.plazi.org/id/03E64B08E32CFFF085855B09FEE7EC8F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E32CFFF085855DB2FC47EFCA.text	03E64B08E32CFFF085855DB2FC47EFCA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium attenboroughi	<div><p>Micridium attenboroughi sp.n.</p><p>(Figs. 10, 28, 34, 50, 63, 72 a/b, 82a/b, 95)</p><p>Habitus Fig. 10. Length 0.56 mm. Colour: yellow/brown, pubescence, legs and antennae pale yellow. Antonnomeres 3–11 length 0.20 mm. Width across eyes 0.16 mm. Mentum: narrowed to base, sides straight, submentum with 3 setae, Fig. 34. Pronotum length 0.15 mm, width 0.21 mm, with two distinct, almost parallel, linear depressions, Fig. 28. Elytra length 0.35 mm, width 0.27 mm. Mesoventrum: keel narrow not reaching posteriorly beyond mesocoxae, Fig. 50. Mesepiventra without clear reticulation, evenly rounded to mesocoxae, Fig. 50. Metaventrum: metepiventral sutures reaching posterior margin, Fig. 63; posterior intercoxal process without prominent setae in male +/-straight between lateral points, Fig. 95. Wings of usual ptiliid type.</p><p>Male: aedeagus Figs. 82a/b.</p><p>Female: spermatheca Figs. 72 a/b.</p><p>Etymology. I have great pleasure in naming this species after Sir David Attenborough, the British naturalist and broadcaster, who has recently celebrated his 90th birthday.</p><p>Diagnosis. The clearly marked, almost parallel, pronotal depressions reaching to the midpoint of the thorax will distinguish this species from all others but M. quadridens sp. n. from which it may be separated by the shorter antennae and by the form of the male characteristics.</p><p>Type data: Holotype: ♀; Bolivia, Cochabamba; BOL / Nov 2013/02, ca. 40 km E of Chimore. GPS 22, S. 17° 05' 14" E. 64° 46' 17", 213m , 22.xi.2013, sifting litter, Winkler app. extr., P. Baňař lgt. (UASC). Paratypes: ♂, same data as holotype (MMBC); 2♀ 1♂, Bolivia, Cochabamba, BOL / Nov 2013/04 ca 8 km E of Villa Tunari, GPS 24, S. 16° 59' 11" E. 65° 20' 44", 225m , 23.xi.2013, P. Baňař lgt. (MMBC, BMNH).</p></div>	https://treatment.plazi.org/id/03E64B08E32CFFF085855DB2FC47EFCA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E32FFFFC85855E68FB71EA08.text	03E64B08E32FFFFC85855E68FB71EA08.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium boliviense	<div><p>Micridium boliviense sp.n.</p><p>(Figs. 11, 19, 35, 49, 73)</p><p>Habitus Fig. 11. Length 0.63 mm. Colour: dusky yellow, head a little darker, pubescence, legs and antennae pale yellow. Antennomeres 3–11 length 0.20 mm, 4–8 ovoid. Head with group of shallow depressions on disc. Width across eyes 0.18 mm. Mentum narrowed to base, sides straight, submentum with 3 setae, Fig.35. Pronotum with two distinct linear depressions in basal half converging anteriorly, sides evenly rounded, length 0.16 mm, width 0.23 mm, Fig. 19. Elytra widest at middle, length 0.36 mm, width 0.27 mm. Mesoventrum: keel narrow between mesocoxae, Fig. 49. Mesepiventra without clear reticulation, evenly rounded to mesocoxae, Fig. 49. Metaventrum: metepiventral sutures not reaching posterior margin, posterior intercoxal process shallowly concave. Wings absent.</p><p>Male: not known.</p><p>Female: spermatheca in the form of the number 8, Fig. 73.</p><p>Etymology. Named after the country where the insect was found.</p><p>Diagnosis. The form of the pronotal linear depressions, the absence of wings, and the shape of the spermatheca distinguish the species.</p><p>Type data: Holotype: ♀, Bolivia, Santa Cruz dep. W. Amboro NP Barientos, BOL / Nov 2013/13, 1583m, 29.xi, sifting litter palms, S. 18° 06' 11" E. 63° 48' 09", Winkler app. extr. P. Baňař lgt. (UASC) .</p></div>	https://treatment.plazi.org/id/03E64B08E32FFFFC85855E68FB71EA08	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E320FFFD85855E4CFC72EA94.text	03E64B08E320FFFD85855E4CFC72EA94.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium elegans	<div><p>Micridium elegans sp.n.</p><p>(Figs. 8, 23, 36, 44, 57, 66, 74, 83a/b)</p><p>Habitus Fig. 8. Length 0.66 mm. Colour: dark, almost black, pubescence, antennomeres and legs brown. Antennomeres 4–8 widest medially and narrowed before base and apex; length of 3–11 0.29 mm, Fig. 44. Width across eyes 0.20 mm. Mentum narrowed towards base, sides straight, submentum with 3 setae, Fig 36. Pronotum length 0.14 mm, width 0.24 mm, widest in front of middle, with two distinct linear depressions in basal half narrowed anteriorly, Fig. 23. Elytra length 0.44 mm, width 0.29 mm. Mesoventrum: collar without clear humeri, keel flattened between mesocoxae, Fig. 57. Mesepiventra without clear reticulation, smoothly rounded to mesocoxae which are more widely separated than species with a narrow keel, Fig. 57. Metaventrum: metepiventral sutures close to lateral margins and reaching posterior margin, Fig. 66, posterior intercoxal process straight between lateral points. Wings of usual ptiliid type.</p><p>Male: aedeagus strongly humped with a large median and two shorter lateral projections Figs. 83 a/b.</p><p>Female: spermatheca Fig. 74.</p><p>Etymology. Named after the rather elegant appearance of the species.</p><p>Diagnosis. The very dark colour, length of antennomeres 4–7, lack of mesoventral humeri, and form of both the female and male genitalia quickly distinguish this species.</p><p>Type data: Holotype: ♀, Peru, Cusco Dept., <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=-71.41917&amp;materialsCitation.latitude=-12.8925" title="Search Plazi for locations around (long -71.41917/lat -12.8925)">Villa Carmen</a> field station, 1.7 km west cafeteria research transect, Flight intercept trap, 12.89250S 71.41917W, 555m, 21–22.v.2011, D.J.Bennett &amp; E. Razuri (MUSM) . Paratypes: 6 examples, same data as holotype (MUSM, SEMC, BMNH) .</p></div>	https://treatment.plazi.org/id/03E64B08E320FFFD85855E4CFC72EA94	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E321FFFD85855B99FDE5EE87.text	03E64B08E321FFFD85855B99FDE5EE87.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium foveatum	<div><p>Micridium foveatum sp.n.</p><p>(Figs. 13, 21, 40, 46, 59, 64, 75, 85, 91, 102)</p><p>Habitus Fig. 13. Length 0.64 mm. Colour dark brown, pubescence, antennae and legs dusky yellow. Length of antennomeres 3–11 0.24 mm, antennomere 11 with branched sensillae, Fig. 46. Width across eyes 0.18 mm. Mentum: sides almost parallel expanded laterally at anterior corners, submentum with 3 setae, Fig. 40. Pronotum without linear depressions but with two groups of large setal depressions (numbers and positions slightly variable between specimens and some with a few scattered centrally) length 0.16 mm, width 0.22 mm, Fig. 21. Elytra length 0.42 mm, width 0.28 mm. Mesoventrum: keel narrow between mesocoxae, splitting anteriorly into two short projections which reach half way to the collar; collar with a small semicircular cap medially placed on the anterior margin and a medially placed bifid posterior projection, Fig. 59. Mesepiventra without reticulation, sinuate in posterior half with rounded hind angles. Metaventrum: metepiventral sutures short reaching +/– 1/4 length of the sclerite, Fig. 64. Pygidium with a sharp apical point Fig. 102. Wings of usual ptiliid type.</p><p>Male: posterior intercoxal process of metaventrum with a fringe of 8 flattened setae extending posteriorly beyond the metacoxal plates. Aedeagus: shape difficult to interpret, Fig. 85.</p><p>Female: spermatheca Fig. 75.</p><p>Etymology. Named after the pronotal depressions.</p><p>Diagnosis. The form of the mesoventrum quickly distinguishes this species from all others.</p><p>Type data: Holotype: ♀, Chile, Llanquihue Pr., Lago Chapo, 13.5 km E Correntoso, site 656, Valdivian rainfor., window trap, 310m, 16–27.xii.1982, A. Newton &amp; M. Thayer (FMNH) . Paratypes: 16 examples, same data as holotype (FMNH, BMNH); 3 examples, Chile, Valdivia Pr., 4.1km W Anticura, trap site 663, Valdivian rainfor., window trap, 270m, 19–25.xii.1982, A. Newton &amp; M. Thayer (FMNH) ; 2 examples, Chile, Valdivia Pr., 4.1km W Anticura, trap site 663, Valdivian rain for., leaf litter on forest floor, 270m, 19–25.xii.1982, A. Newton &amp; M. Thayer (FMNH) ; 1 example, Chile, Osorno Pr., Parque Nac. Puyehue, Antillanca road, trap site 661, Valdivian rainfor., 690m, 18–24.xii.1982, A. Newton &amp; M. Thayer (FMNH) ; 11 examples, Chile, Osorno Pr., Parque Nac. Puyehue, 4.1 km E Anticura, trap site 662, Valdivian rainfor., forest leaf and log litter, 430m, 19–26.xii.1982, A. Newton &amp; M. Thayer (FMNH, BMNH) .</p></div>	https://treatment.plazi.org/id/03E64B08E321FFFD85855B99FDE5EE87	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E321FFFD85855FAAFC75EF82.text	03E64B08E321FFFD85855FAAFC75EF82.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium groehni Polilov & Perkovsky 2004	<div><p>Micridium groehni Polilov &amp; Perkovsky 2004</p><p>Described on the basis of a single specimen from Baltic amber (Polilov &amp; Perkovsky 2004). The photographs and line drawings included in the paper do not show the mesoventral carinae defining the genus Micridium as described here and the two depressions on the pronotum are rounded and not linear.</p></div>	https://treatment.plazi.org/id/03E64B08E321FFFD85855FAAFC75EF82	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E322FFFF85855E65FC17EB90.text	03E64B08E322FFFF85855E65FC17EB90.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium halidaii (Matthews, A. 1868) Matthews, A. 1868	<div><p>Micridium halidaii (Matthews, A. 1868) as Ptilium halidaii</p><p>(Figs. 2, 25, 55, 69, 76, 84, 96, 101)</p><p>Habitus Fig. 2. Length 0.65 mm (as mounted with abdomen extruded 0.76 mm). Colour yellow brown, antennae and legs light yellow. Antonnomeres 3–11 length 0.19 mm. Width across eyes 0.18 mm. Mentum: narrowed towards base, sides slightly sinuate. Pronotum: punctured and pubescent, medial punctures larger than those at the sides; with two distinct, almost parallel, linear depressions reaching from the posterior margin to the centre, widest in the anterior half, lateral margins sinuate and hind angles clearly denoted, length 0.13 mm. width 0.22 mm, Fig. 25. Scutellum with four depressions at base Fig. 101. Elytra length 0.40, width 0.26 mm, punctured and pubescent, the punctures smaller than those on the pronotum; sides evenly rounded, wider just in front of centre, humeri with a row of concave depressions. Mesoventrum: keel narrow between the mesocoxae, not reaching metaventrum, Fig. 55. Mesepiventra without clear reticulation, straight before slight hind angles Fig. 55. Metaventrum: metepiventral sutures reaching +/– 3/4 of the distance from the mesoventrum to the hind coxae, Fig. 69.</p><p>Male: posterior intercoxal process of metaventrum with a fringe of flattened setae, Fig. 96. Aedeagus with a tapering point, Fig. 84.</p><p>Female: spermatheca Fig. 76.</p><p>Remarks. The habitus figure and measurements are taken from the holotype in BMNH. The description is based on the holotype and on a second, slightly smaller and darker specimen, in the Museum collected by J.A.Owen in Richmond Park, Surrey, UK on 7 January 1984 and determined by C. Johnson, this specimen was also used for the SEMs. A third specimen in a private collection mounted as a slide, also from Richmond, was borrowed to make the spermatheca drawing and figure of the male metaventral intercoxal process.</p><p>The holotype is mounted between two sheets of mica (?) attached to a card with the rear corners cut off. Labels are present as follows: 'halidayi Ih[?] July 1867 ' (pinned immediately below the specimen, apparently in Matthews' hand, rear corners also cut off); 'Type AM [monogram]' (in Matthews' hand on red card); 'haldaii' (in Matthews' hand on blue strip); ' Ptilium halidaii Mat. H. Britten 1931 '; ' Ptilium halidayi, Mat'; '2796' (Matthews/Mason collection number); ' Micridium halidaii Matth. C. Johnson det.'; 'in Matthews. Coll.'; 'Matthews coll 1904 - 120' (BMNH accession number) and 'Syntype' (added by BMNH). (Fig. 2).</p></div>	https://treatment.plazi.org/id/03E64B08E322FFFF85855E65FC17EB90	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E323FFFF85855A95FC63ECF7.text	03E64B08E323FFFF85855A95FC63ECF7.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium hilli (Johnson 1969) Johnson 1969	<div><p>Micridium hilli (Johnson, 1969) as Micridina hilli</p><p>(Figs. 6, 26, 58, 68, 78, 92)</p><p>The following supplements the description of Johnson (1969). Habitus Fig. 6. Length 0.48 mm. Antonnomeres 3– 11 length 0.20 mm. Width across eyes 0.17 mm. Mentum with parallel or almost parallel lateral margins, submentum with 3 or 4 setae. Pronotum length 0.13 mm, width 0.20 mm, Fig. 26. Elytra length 0.27 mm, width 0.23 mm. Mesepiventra: lateral margins without clear reticulation, Fig. 58. Metaventrum: metepiventral sutures Fig. 68, posterior intercoxal process of male Fig. 92. Spermatheca Fig. 78.</p></div>	https://treatment.plazi.org/id/03E64B08E323FFFF85855A95FC63ECF7	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E323FFFF85855C7AFC2EEFCA.text	03E64B08E323FFFF85855C7AFC2EEFCA.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium inornatum	<div><p>Micridium inornatum sp. n.</p><p>(Figs. 18, 47, 80)</p><p>Antennomeres 3–11 length 0.26 mm, 4–8 elongate, narrowed towards base. Width across eyes 0.22 mm. Mentum lateral margins almost parallel with slight medial insinuations, submentum with 3 setae. Pronotum without sculpture or depressions, sides evenly rounded, hind angles almost obscured, length 0.17 mm, width 0.28 mm, Fig. 18. Scutellum without any distinctive features. Mesoventrum: keel between mesocoxae wide and flattened, Fig. 47. Mesepiventra with distinct reticulation, Fig. 47. Mesocoxae widely separated, Fig. 47. Metaventrum: metepiventral sutures reaching midpoint only, posterior intercoxal process straight between lateral points. Wings of usual ptiliid type.</p><p>Male: not known.</p><p>Female: spermatheca Fig. 80.</p><p>Etymology. After the smooth appearance of the pronotum lacking linear depressions.</p><p>Diagnosis. The wide separation of the mesocoxae will quickly separate this species from all others except johnsoni and elegans .</p><p>Type data: Holotype: ♀, Bolivia, Cochabamba, BOL / Nov 2013/03. ca 8km E of Villa Tunari, sifting rotten wood, Winkler app. extr., GPS 23 S. 16° 59' 12" E. 65° 20' 47", 298m, 22.xi.2013. P. Baňař lgt. (UASC). Pinned on a small piece of clear acetate as a disarticulated slide using Euparal as the mountant . Paratype: ♀, same data as holotype (MMBC); the specimen was found with the elytra missing.</p></div>	https://treatment.plazi.org/id/03E64B08E323FFFF85855C7AFC2EEFCA	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E325FFFA85855C9BFD3BE950.text	03E64B08E325FFFA85855C9BFD3BE950.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium johnsoni	<div><p>Micridium johnsoni sp. n.</p><p>(Figs. 7, 22, 39, 45, 53, 61, 77 a/b)</p><p>Habitus Fig. 7. Length 0.57 mm. Colour mid brown, antennae and legs yellow. Antennomeres 3–11 length 0.19 mm Fig. 45. Width across eyes 0.18 mm. Mentum: the two long setae normally located at the anterior corners situated medially, widest anteriorly but not so marked as other species of more triangular shape, submentum Fig. 39. Pronotum with larger setal depressions towards posterior margin, length 0.12 mm, width 0.22 mm, Fig. 22. Elytra length 0.37 mm, width 0.26 mm. Mesoventrum: keel wide and flattened between mesocoxae, Fig. 53. Mesepiventra: reticulation distinct, hind angles apparent at junction with metepiventral suture, Fig. 53. Mesocoxae widely separated Fig. 53. Metaventrum: reticulation distinct, metepiventral sutures terminating anteriorly at lateral angle of mesoventral suture and bending inwards to posterior margin, Fig. 61; posterior intercoxal process concave.</p><p>Male: not known.</p><p>Female: spermatheca Fig. 77 a/b.</p><p>Etymology. I have pleasure in naming this species after Colin Johnson, former curator of entomology at the Manchester Museum.</p><p>Diagnosis. The widely separated mesocoxae, posterior angles of the mesoventrum and the reticulation of the metaventrum distinguish the species.</p><p>Type data: Holotype: ♀, Peru, Madre de Dios Dept., CICRA field station 2km NW of cafeteria, research plot, flight intercept trap, 12.55236S 70.10989W, 295m, 9–11.vi.2011, Chaboo team (MUSM) . Paratypes: 6 f #, same data as holotype (MUSM, SEMC, BMNH) .</p></div>	https://treatment.plazi.org/id/03E64B08E325FFFA85855C9BFD3BE950	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E326FFFA858558D5FEE7EC8A.text	03E64B08E326FFFA858558D5FEE7EC8A.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium lineatum (LeConte 1863) LeConte 1863	<div><p>Micridium lineatum (LeConte 1863) as Ptenidium lineatum</p><p>(Figs. 4, 32)</p><p>Micridium lineatum Motschulsky 1869</p><p>Habitus Fig. 4. Length 0.53 mm. Colour dark yellowish brown, antennae light yellow. Antennomeres 3–11 length 0.16 mm. Width across eyes 0.17 mm. Head punctured and pubescent. Pronotum length 0.16 mm, width 0.21 mm, widest in middle, punctured and pubescent throughout, lateral margins slightly sinuate before hind angles Fig. 32. Elytra length 0.34 mm, width 0.25 mm, punctured and pubescent throughout as pronotum. Wings visible through elytra.</p><p>Remarks. The description, figure and measurements are taken from the syntype of Micridium lineatum Motschulsky in BMNH. This is mounted on a small piece of clear mica(?) and includes a few fragments of a second specimen now lost. Labels are present as follows: ' Micridium lineatum' (apparently in Matthews' hand, a third word is deleted); ' Micridium lineatum, Type from Motschulsky, N. America, 19, 1865' (in Matthews' hand on a light green card with the rear corners cut off); '1586, 1587' (Matthews/Mason collection numbers); 'Matthews coll. 1904 - 120' (BMNH accession number) and 'Syntype' (added by BMNH) (Fig. 4). A second specimen in the BMNH bearing a red label inscribed in Matthews' hand ' Micridium lineatum' and a Matthews/Mason number '3762' is not conspecific with the syntype. The holotype of Ptenidium lineatum LeConte is in the Museum of Comparative Zoology, Harvard University, USA (imaged at http://mczbase.mcz.harvard.edu/guid/ MCZ:Ent:6629).</p><p>Details of the ventrum, viewed through the mount, were not sufficiently clear to enable positive determination to Micridium and for the reasons given above no attempt was made to detach the insect or to dissect it so that the sex is not known.</p></div>	https://treatment.plazi.org/id/03E64B08E326FFFA858558D5FEE7EC8A	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E326FFFB85855DACFE20EDEE.text	03E64B08E326FFFB85855DACFE20EDEE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium newtoni	<div><p>Micridium newtoni sp.n.</p><p>(Figs. 12, 20, 52, 60, 70, 81, 89a/b, 98, 100)</p><p>Habitus Fig. 12. Length 0.76 mm. Colour: yellow brown, head dark brown, pubescence, legs and antennae pale yellow. Antennomeres 3–11 length 0.26 mm. Width across eyes 0.22 mm. Mentum almost square, submentum with 3 setae. Pronotum: without linear depressions, lateral margins evenly rounded, widest just behind middle, length 0.17 mm, width 0.28 mm. Fig. 20. Scutellum Fig. 100. Elytra length 0.52 mm, width 0.29 mm. Mesoventrum: collar with a short pair of posteriorly directed medial arms bearing long pubescence, Fig. 60. Mesepiventra: reticulation absent, hind angles smoothly rounded, Fig. 58. Metaventrum: metepiventral sutures reaching to posterior margin, Fig. 70. Wings of usual ptiliid type.</p><p>Male: posterior intercoxal process of metaventrum with a fringe of elongate setae, Fig. 98. Aedeagus Fig. 89a/ b.</p><p>Female: spermatheca Fig. 81.</p><p>Etymology. Named after the collector Dr A.F.Newton who has been very helpful to the writer.</p><p>Diagnosis. The large size and long elytra distinguish the species.</p><p>Type data: Holotype: ♀, Chile, Cautín Pr., Volcán Villarrica, site 653, Noth. domb.-pumilio forest w/ Chusquea, window trap, 1250m, 15–29.xii.1982, A. Newton &amp; M. Thayer (FMNH) . Paratype: ♂, same data as holotype (BMNH); the specimen was found missing head and antennae and has been pinned on a small piece of acrylic as a disarticulated slide using Euparal as a mountant.</p><p>FIGURES 82–90. Micridium aedeagi. 82a/b. M. attenboroughi sp. n. 83a/b. M. elegans sp. n. 84. M. halidaii (Matthews) . 85. M. foveatum sp. n. 86a/b. M. thayerae sp. n. 87a/b. M. proprium sp. n. 88a/b. M. quadridens sp. n. 89a/b M. newtoni sp. n. 90a/ b M. rhodeanum (Casey) .</p></div>	https://treatment.plazi.org/id/03E64B08E326FFFB85855DACFE20EDEE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E327FFE485855F08FD95E92F.text	03E64B08E327FFE485855F08FD95E92F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium oweni	<div><p>Micridium oweni sp.n.</p><p>(Fig. 9, 27, 33, 56, 67)</p><p>Habitus Fig. 9. Length 0.54 mm. Colour: brown, legs and antennae yellow. Antennomeres 3–11 length 0.21 mm, 5– 8 elongate. Width across eyes 0.16 mm. Mentum narrowed towards base, submentum with 3 setae, Fig. 33. Pronotum widest medially and with two distinct linear depressions narrowed anteriorly and reaching +/– 3/4 the length of the sclerite, length 0.16 mm, width 0.23 mm, Fig. 27. Elytra fused, length 0.35 mm, width 0.26 mm. Mesoventrum: keel narrow between mesocoxae extending on to the metaventrum, Fig 56. Mesepiventra: reticulation absent, hind angles rounded, Fig. 56. Metaventrum: metepiventral sutures reaching to posterior margin, Fig. 67; posterior intercoxal process without setal fringe. This species is apterous.</p><p>Etymology. Named after Professor John Owen, the UK Coleopterist who died in 2016 and was very helpful to the writer.</p><p>Diagnosis. The length of the pronotal depressions and of the antennae distinguish this apterous species. Type data: Holotype: sex unknown (no genitalia were detected in the dissection], Madagascar, Ambohitantely Spec. Res., ABT. Sept.2011/10, 2.ix.2011, S. 18°10'63.9" E. 47°17'22.4", 1518m, sifting forest litter by waterfall, Winkler app. extraction, L.S.Rahanitriniaina lgt. (BMNH). Pinned on a piece of clear acetate as a disarticulated slide using Euparal as the mountant.</p></div>	https://treatment.plazi.org/id/03E64B08E327FFE485855F08FD95E92F	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E339FFE5858559D9FC23EAFE.text	03E64B08E339FFE5858559D9FC23EAFE.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium proprium	<div><p>Micridium proprium sp. n.</p><p>(Figs. 15, 37, 51, 87a/b, 94)</p><p>Habitus Fig. 15. Length 0.53 mm. Colour: yellow. Antennomeres 3–11 length 0.20 mm. Width across eyes 0.16 mm. Mentum narrowed towards base, submentum with 3 setae, Fig. 37. Pronotum without distinct linear or other depressions, length 0.14 mm, width 0.21 mm. Mesoventrum: keel narrow extending between mesocoxae onto the metaventrum, Fig. 51. Mesepiventra without clear reticulation, hind angles narrowly rounded, Fig. 51. Metaventrum: metepiventral sutures obliterated before reaching the posterior margin. Wings of usual ptiliid type.</p><p>Male: posterior intercoxal process of metaventrum with long fringe of short setae, Fig. 94. Aedeagus Fig. 87a/ b.</p><p>Female: Not known.</p><p>Etymology. From the Latin proprius meaning with personal characteristics.</p><p>Diagnosis. The fringe of setae on the posterior intercoxal process of the metaventrum distinguishes the males of this species.</p><p>Type data: Holotype: ♂, Bolivia, Santa Cruz dep., Santiago de Chiquitos, "env under El Mirador ", 693m, 5.xii 2013, S. 18°19'10" E.59°34'16", sifting dry litter, Winkler app. extr., P. Baňař lgt. (UASC). Pinned on a piece of clear acetate as a disarticulated slide using Euparol as the mountant..</p></div>	https://treatment.plazi.org/id/03E64B08E339FFE5858559D9FC23EAFE	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E339FFE585855A03FB27EDF2.text	03E64B08E339FFE585855A03FB27EDF2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium quadridens	<div><p>Micridium quadridens sp.n.</p><p>(Figs. 16, 17, 38, 42, 48, 65, 88a/b, 97)</p><p>Habitus Fig. 16. Length 0.56 mm. Colour: brown, pubescence, legs and antennae yellow. Antonnomeres 3–11 length 0.16 mm, 5–7 ovoid, Fig. 42. Width across eyes 0.17 mm. Mentum narrowed towards base, lateral margins straight; submentum with 3 setae, Fig. 38. Pronotum: sides evenly rounded, widest at middle, with two clearly defined elongate depressions reaching from the base to just past the middle and with +/– 5 large punctures between, length 0.14 mm, width 0.21 mm, Fig. 17. Elytra length 0.35 mm, width 0.27 mm. Mesoventrum: keel narrow between mesocoxae, extending on to the metaventrum, Fig. 48. Mesepiventra: reticulation absent, angles rounded, Fig. 48. Metaventrum: metepiventral sutures reaching to posterior margin Fig. 65. Wings of usual ptiliid type.</p><p>Male: Posterior intercoxal process of metaventrum with four flattened medial setae Fig. 97. Aedeagus Fig. 88a/ b.</p><p>Female: [no spermatheca was found in the dissection of the female]</p><p>Etymology. Named after the four prominent setae on the metaventral intercoxal process.</p><p>Diagnosis: The distinctive pronotum and form of the male metaventral intercoxal process distinguish this species.</p><p>Type data: Holotype: ♂, Bolivia, Cochabamba, BOL / Nov 2013/03. ca 8km E of Villa Tunari, sifting rotten wood, Winkler app. extr., GPS 23 S. 16° 59' 12" E. 65° 20' 47", 298m, 22.xi.2013, P. Baňař lgt.. Mounted on a piece of pinned acrylic as a disassembled slide (UASC) . Paratype: ♀, as holotype (BMNH).</p></div>	https://treatment.plazi.org/id/03E64B08E339FFE585855A03FB27EDF2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E339FFE685855F74FCFAEA08.text	03E64B08E339FFE685855F74FCFAEA08.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium rhodeanum (Casey 1924) Casey 1924	<div><p>Micridium rhodeanum (Casey, 1924) as Dilinium rhodeanum</p><p>(Figs. 5, 30, 60, 71, 90a, 90b, 99)</p><p>Micridium rhodeanum (Casey); Johnson (2001)</p><p>Habitus Fig. 5. Length 0.65 mm. Colour yellow brown, legs and antennae yellow. Antennomeres 3–11 length 0.22 mm. Width across eyes 0.19 mm. Mentum narrowed towards base, lateral margins straight. Pronotum 0.25 mm wide, 0.19 mm long, with two distinct elongate depressions reaching from the posterior margin to just past the middle, the distance between them narrowing anteriorly; sides slightly sinuate before hind angles, Fig. 30. Elytra 0.40 mm long, 0.30 mm wide, widest just in front of middle. Mesoventrum: keel narrow between mesocoxae, collar with two short ridges extending posteriorly between the keel and the mesepiventral ridges which are faint, mesepiventra without obvious reticulation Fig. 60. Metaventrum: metepiventral sutures faint, angled inwards and extending half way to posterior margin Fig. 71; intercoxal process evenly rounded with comb of +/- 24 narrow setae Fig. 99. Wings of usual ptiliid type.</p><p>Male: aedeagus Figs. 90a/b.</p><p>Remarks. Five Casey syntypes (labelled as ‘paratypes’; designated as paralectotypes by Sörensson) (Fig. 5) were borrowed for study from the Smithsonian Institution, Washington DC, USA. One was remounted as a disarticulated slide in Euparal on a piece of acrylic attached to the pin and a male and female remounted on cards for examination in the SEM. No genitalia were detected in the female and further dissections were not carried out on the other very fragile specimens for the reasons given above.</p><p>I have also seen what appear to be two further examples of this species mounted on a single card, collected by R.Coleman in Fairfield Township, Sank Co., Wisconsin, USA, 30 Oct. 1953, in leaf mould and bearing the determination label ' Micridium sp. Dybas &amp; Johnson' (MM).</p></div>	https://treatment.plazi.org/id/03E64B08E339FFE685855F74FCFAEA08	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E33AFFE685855B2DFC5EEE17.text	03E64B08E33AFFE685855B2DFC5EEE17.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium thayerae	<div><p>Micridium thayerae sp.n.</p><p>(Figs. 14, 24, 41, 43, 54, 62, 79, 86a/b, 93)</p><p>Habitus Fig. 14. Length 0.70 mm. Colour brown, legs and antennae pale yellow, covered with long yellow overlapping pubescence. Antennomeres 3–11 length 0.22 mm, Fig. 43. Width across eyes 0.19 mm. Mentum almost square, the two long setae normally situated at the anterior corners are placed medially close to the lateral margins, submentum with 4 setae, Fig. 41. Pronotum without linear depressions but with clearly marked shallow pits at sides of disc in posterior half, length 0.17 mm, width 0.26 mm, Fig. 24. Elytra length 0.47 mm, width 0.30 mm. Mesoventrum: keel slightly widened between mesocoxae Fig. 54. Mesepiventra: clearly reticulate, evenly rounded to mesocoxae, Fig. 54. Metaventrum: metepiventral sutures short reaching only 1/3 of the length of the sclerite, Fig. 62.</p><p>Male: posterior intercoxal process of metaventrum with fringe of long, flattened setae, Fig. 93. Aedeagus Fig. 86a/b.</p><p>Female: spermatheca Fig. 79.</p><p>Etymology. Named after Dr Margaret Thayer, the collector.</p><p>Diagnosis. The reticulation of the mesoventrum, very short metepiventral sutures and square mentum distinguish this species.</p><p>Type data: Holotype: ♂, Chile, Osorno Pr., Los Lagos, Parque Nac. Puyehue, Antillanca road, Valdivian rainfor., forest leaf and log litter, 470m, 20–25.xii.1982, A. Newton &amp; M. Thayer (FMNH) . Paratypes: 350 examples, same data as holotype (FMNH, BMNH); 19 examples, Chile, Osorno Pr., hills S of Muicolpué, secondary Valdivian forest, 160m, 21.12.82, A. Newton &amp; M. Thayer (BMNH) ; 101 examples, Chile, Osorno Pr., Parque Nac. Puyehue, 4.1 km E Anticura, trap site 662, Valdivian rainfor., forest leaf and log litter, Berlese, 430m, 19–26.xii.1982, A. Newton &amp; M. Thayer (FMNH, BMNH) ; 4 examples, Chile, Osorno Pr., Parque Nac Puyehue, Antillanca Road, trap site 661, Valdivian rainfor., forest leaf and log litter, Berlese, 690m, 18–24.xii.1982, A. Newton &amp; M. Thayer (BMNH) ; 2 examples, Chile, Valdivia Pr., 4.1km W Anticura, trap site 663, Valdivian rainfor., leaf litter on forest floor, 160m, A. Newton &amp; M. Thayer (FMNH) .</p></div>	https://treatment.plazi.org/id/03E64B08E33AFFE685855B2DFC5EEE17	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
03E64B08E33AFFE785855F1AFCC8EA70.text	03E64B08E33AFFE785855F1AFCC8EA70.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Micridium vittatum (Motschulsky 1845) Motschulsky 1845	<div><p>Micridium vittatum (Motschulsky, 1845) as Trichopteryx vittata</p><p>(Figs. 3 a/b, 31)</p><p>Habitus Fig. 3 a/b. Length 0.53 mm. Colour yellow, head darker. Finely pubescent. Antonnomeres 3–11 length 0.19 mm. Width across eyes 0.15mm. Pronotum length 0.16 mm, width 0.21 mm, widest in anterior half, more shining than elytra, with fine scattered punctures more obvious in anterior than posterior half, lateral margins slightly sinuate. Fig. 31. Elytra length 0.35 mm, width 0.24 mm, more strongly punctured than pronotum, widest in front of middle and tapering posteriorly. Wings visible through elytra.</p><p>Remarks. The description, figure and measurements are based on two syntypes in the BMNH mounted on a single piece of mica(?) and bearing labels: ' Micridium vittatum' (on a card immediately under the specimens, possibly in Motschulsky's hand); ' Micridium vittatum; Type from Motschulsky; Russia [followed by a short, unreadable word] 1845' (in Matthews' hand on a pale green card, the posterior corners cut off); '2322. 2323' (Matthews/Mason collection numbers); ' Matthews coll 1904 - 120' (BMNH accession number) and ' Syntype' (added by the BMNH). (Figs. 3 a/b).</p><p>A slide preparation of two further specimens (one apparently previously unnoticed being very faint and to one side) bearing a label in Matthews' hand ' Micridium vittatum –maxilla Labium etc. 1865 44' also exist in the BMNH but it is not clear that these are the same species as those above. Further cards attached to these specimens, also apparently in Matthews' hand, are inscribed: 'Ex? 1892 All parts distinct, three joints of the tarsi very distinct' (two front corners of the card are cut off); 'In this preparation the Mentum etc are attached to one of the the[sic] maxilla 44' (green card, the two back corners cut off); '44' (green card); '2981' (Matthews/Mason collection number); and 'Matthews coll 1904 - 120' (BMNH accession number).</p><p>Some details of the ventral surfaces of the two syntypes are just visible through the mica and confirm that the insects show the mesoventral features confirming their determination as Micridium . For the reasons given above the insects have not been dissected so that their sex is not known.</p></div>	https://treatment.plazi.org/id/03E64B08E33AFFE785855F1AFCC8EA70	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Darby, Michael	Darby, Michael (2017): Taxonomic review of the genera Micridium Motschulsky, 1869 and Micridina Johnson, 1969 (Coleoptera: Ptiliidae) with eleven new species including the first records from South America and Madagascar. Zootaxa 4242 (2): 233-254, DOI: 10.11646/zootaxa.4242.2.2
