taxonID	type	description	language	source
03E64B08E32BFFF085855DC8FCB1E9E5.taxon	diagnosis	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). Additional non-diagnostic characters are as follows: antennae with 11 antennomeres, 1 & 2 enlarged to form a pedicel, 3 – 8 either ovoid or elongate, 9 – 11 a loosely jointed club, 10 & 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. 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). 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). Abdomen with six visible ventrites. Pygidium composed of tergites IX and X which are not fused, X with a strong apical tooth (Fig. 102). Wings of usual ptiliid form either present or absent.	en	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.taxon	description	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.	en	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.taxon	discussion	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). 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.	en	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.taxon	description	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. Male: aedeagus Figs. 82 a / b. Female: spermatheca Figs. 72 a / b.	en	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.taxon	etymology	Etymology. I have great pleasure in naming this species after Sir David Attenborough, the British naturalist and broadcaster, who has recently celebrated his 90 th birthday.	en	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.taxon	diagnosis	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.	en	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.taxon	materials_examined	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 ", 213 m, 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 ", 225 m, 23. xi. 2013, P. Baňař lgt. (MMBC, BMNH).	en	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.taxon	description	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. Male: not known. Female: spermatheca in the form of the number 8, Fig. 73.	en	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.taxon	etymology	Etymology. Named after the country where the insect was found.	en	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.taxon	diagnosis	Diagnosis. The form of the pronotal linear depressions, the absence of wings, and the shape of the spermatheca distinguish the species.	en	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.taxon	materials_examined	Type data: Holotype: ♀, Bolivia, Santa Cruz dep. W. Amboro NP Barientos, BOL / Nov 2013 / 13, 1583 m, 29. xi, sifting litter palms, S. 18 ° 06 ' 11 " E. 63 ° 48 ' 09 ", Winkler app. extr. P. Baňař lgt. (UASC).	en	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.taxon	description	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. Male: aedeagus strongly humped with a large median and two shorter lateral projections Figs. 83 a / b. Female: spermatheca Fig. 74.	en	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.taxon	etymology	Etymology. Named after the rather elegant appearance of the species.	en	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.taxon	diagnosis	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.	en	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.taxon	materials_examined	Type data: Holotype: ♀, Peru, Cusco Dept., Villa Carmen field station, 1.7 km west cafeteria research transect, Flight intercept trap, 12.89250 S 71.41917 W, 555 m, 21 – 22. v. 2011, D. J. Bennett & E. Razuri (MUSM). Paratypes: 6 examples, same data as holotype (MUSM, SEMC, BMNH).	en	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.taxon	description	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. 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. Female: spermatheca Fig. 75.	en	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.taxon	etymology	Etymology. Named after the pronotal depressions.	en	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.taxon	diagnosis	Diagnosis. The form of the mesoventrum quickly distinguishes this species from all others.	en	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.taxon	materials_examined	Type data: Holotype: ♀, Chile, Llanquihue Pr., Lago Chapo, 13.5 km E Correntoso, site 656, Valdivian rainfor., window trap, 310 m, 16 – 27. xii. 1982, A. Newton & M. Thayer (FMNH). Paratypes: 16 examples, same data as holotype (FMNH, BMNH); 3 examples, Chile, Valdivia Pr., 4.1 km W Anticura, trap site 663, Valdivian rainfor., window trap, 270 m, 19 – 25. xii. 1982, A. Newton & M. Thayer (FMNH); 2 examples, Chile, Valdivia Pr., 4.1 km W Anticura, trap site 663, Valdivian rain for., leaf litter on forest floor, 270 m, 19 – 25. xii. 1982, A. Newton & M. Thayer (FMNH); 1 example, Chile, Osorno Pr., Parque Nac. Puyehue, Antillanca road, trap site 661, Valdivian rainfor., 690 m, 18 – 24. xii. 1982, A. Newton & 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, 430 m, 19 – 26. xii. 1982, A. Newton & M. Thayer (FMNH, BMNH).	en	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.taxon	description	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. Male: posterior intercoxal process of metaventrum with a fringe of flattened setae, Fig. 96. Aedeagus with a tapering point, Fig. 84. Female: spermatheca Fig. 76.	en	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.taxon	discussion	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. 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).	en	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.taxon	description	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.	en	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.taxon	description	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. Male: not known. Female: spermatheca Fig. 80.	en	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.taxon	etymology	Etymology. After the smooth appearance of the pronotum lacking linear depressions.	en	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.taxon	diagnosis	Diagnosis. The wide separation of the mesocoxae will quickly separate this species from all others except johnsoni and elegans.	en	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.taxon	materials_examined	Type data: Holotype: ♀, Bolivia, Cochabamba, BOL / Nov 2013 / 03. ca 8 km E of Villa Tunari, sifting rotten wood, Winkler app. extr., GPS 23 S. 16 ° 59 ' 12 " E. 65 ° 20 ' 47 ", 298 m, 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.	en	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.taxon	description	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. Male: not known. Female: spermatheca Fig. 77 a / b.	en	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.taxon	etymology	Etymology. I have pleasure in naming this species after Colin Johnson, former curator of entomology at the Manchester Museum.	en	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.taxon	diagnosis	Diagnosis. The widely separated mesocoxae, posterior angles of the mesoventrum and the reticulation of the metaventrum distinguish the species.	en	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.taxon	materials_examined	Type data: Holotype: ♀, Peru, Madre de Dios Dept., CICRA field station 2 km NW of cafeteria, research plot, flight intercept trap, 12.55236 S 70.10989 W, 295 m, 9 – 11. vi. 2011, Chaboo team (MUSM). Paratypes: 6 f #, same data as holotype (MUSM, SEMC, BMNH).	en	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.taxon	discussion	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). 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.	en	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.taxon	description	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. Male: posterior intercoxal process of metaventrum with a fringe of elongate setae, Fig. 98. Aedeagus Fig. 89 a / b. Female: spermatheca Fig. 81.	en	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.taxon	etymology	Etymology. Named after the collector Dr A. F. Newton who has been very helpful to the writer.	en	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.taxon	diagnosis	Diagnosis. The large size and long elytra distinguish the species.	en	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.taxon	materials_examined	Type data: Holotype: ♀, Chile, Cautín Pr., Volcán Villarrica, site 653, Noth. domb. - pumilio forest w / Chusquea, window trap, 1250 m, 15 – 29. xii. 1982, A. Newton & 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. FIGURES 82 – 90. Micridium aedeagi. 82 a / b. M. attenboroughi sp. n. 83 a / b. M. elegans sp. n. 84. M. halidaii (Matthews). 85. M. foveatum sp. n. 86 a / b. M. thayerae sp. n. 87 a / b. M. proprium sp. n. 88 a / b. M. quadridens sp. n. 89 a / b M. newtoni sp. n. 90 a / b M. rhodeanum (Casey).	en	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.taxon	description	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.	en	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.taxon	etymology	Etymology. Named after Professor John Owen, the UK Coleopterist who died in 2016 and was very helpful to the writer.	en	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.taxon	diagnosis	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 ", 1518 m, 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.	en	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.taxon	description	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. Male: posterior intercoxal process of metaventrum with long fringe of short setae, Fig. 94. Aedeagus Fig. 87 a / b. Female: Not known.	en	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.taxon	etymology	Etymology. From the Latin proprius meaning with personal characteristics.	en	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.taxon	diagnosis	Diagnosis. The fringe of setae on the posterior intercoxal process of the metaventrum distinguishes the males of this species.	en	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.taxon	materials_examined	Type data: Holotype: ♂, Bolivia, Santa Cruz dep., Santiago de Chiquitos, " env under El Mirador ", 693 m, 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 ..	en	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.taxon	description	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. Male: Posterior intercoxal process of metaventrum with four flattened medial setae Fig. 97. Aedeagus Fig. 88 a / b. Female: [no spermatheca was found in the dissection of the female]	en	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.taxon	etymology	Etymology. Named after the four prominent setae on the metaventral intercoxal process.	en	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.taxon	diagnosis	Diagnosis: The distinctive pronotum and form of the male metaventral intercoxal process distinguish this species.	en	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.taxon	materials_examined	Type data: Holotype: ♂, Bolivia, Cochabamba, BOL / Nov 2013 / 03. ca 8 km E of Villa Tunari, sifting rotten wood, Winkler app. extr., GPS 23 S. 16 ° 59 ' 12 " E. 65 ° 20 ' 47 ", 298 m, 22. xi. 2013, P. Baňař lgt .. Mounted on a piece of pinned acrylic as a disassembled slide (UASC). Paratype: ♀, as holotype (BMNH).	en	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.taxon	description	Micridium rhodeanum (Casey); Johnson (2001) 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. Male: aedeagus Figs. 90 a / b.	en	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.taxon	discussion	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. 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 & Johnson' (MM).	en	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.taxon	description	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. Male: posterior intercoxal process of metaventrum with fringe of long, flattened setae, Fig. 93. Aedeagus Fig. 86 a / b. Female: spermatheca Fig. 79.	en	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.taxon	etymology	Etymology. Named after Dr Margaret Thayer, the collector.	en	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.taxon	diagnosis	Diagnosis. The reticulation of the mesoventrum, very short metepiventral sutures and square mentum distinguish this species.	en	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.taxon	materials_examined	Type data: Holotype: ♂, Chile, Osorno Pr., Los Lagos, Parque Nac. Puyehue, Antillanca road, Valdivian rainfor., forest leaf and log litter, 470 m, 20 – 25. xii. 1982, A. Newton & M. Thayer (FMNH). Paratypes: 350 examples, same data as holotype (FMNH, BMNH); 19 examples, Chile, Osorno Pr., hills S of Muicolpué, secondary Valdivian forest, 160 m, 21.12.82, A. Newton & 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, 430 m, 19 – 26. xii. 1982, A. Newton & 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, 690 m, 18 – 24. xii. 1982, A. Newton & M. Thayer (BMNH); 2 examples, Chile, Valdivia Pr., 4.1 km W Anticura, trap site 663, Valdivian rainfor., leaf litter on forest floor, 160 m, A. Newton & M. Thayer (FMNH).	en	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.taxon	description	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 0.15 mm. 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.	en	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.taxon	discussion	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). 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). 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.	en	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
