Habitus

Traces, Pierre Moret, 2024, Description of new Platynini from the montane cloud forest of Ecuador, with a redefinition of the genera Glyptolenus Bates and Glyptolenoides Perrault (Coleoptera, Carabidae), Faunitaxys 12 (63), pp. 1-23 : 20-22

publication ID

https://doi.org/10.57800/faunitaxys-12(63)

publication LSID

lsid:zoobank.org:pub:0B09D8A9-05AC-4EAF-AE03-717C3AC1DEC6

persistent identifier

https://treatment.plazi.org/id/03CA1D6F-FFDE-FF8E-FFC1-B5891F45FC39

treatment provided by

Felipe

scientific name

Habitus
status

 

Habitus . – Fig. 15a. Brachypterous. Body length: 6.6 mm.

Colour. – Head, pronotum and ventral sclerites piceous black, elytra dark brown; legs brownish, slightly paler at the junction between tibiae and femora; antennae and palpi testaceous. Upper surface of the body smooth and shiny, slightly wrinkled on the pronotum.

Microsculpture, mesh pattern. – Head: transverse, partly obsolete; pronotum: transverse; elytra: transverse.

Head. – Fig. 15b. Elongate, cylindrical; eyes very small, weakly convex; genae flat, almost twice as long as the eyes; no angle between eyes and genae. Vertex moderately convex, collar constriction shallow, hardly visible laterally. Mandibles long, thin and pointed. Mentum tooth broad and short, bifid with blunt apices. Antennae quite long, extending backward to the middle of the elytra; 4 th antennomere as long as 1+2. Palpi very thin.

Prothorax. – Pronotum slightly longer than wide (PL/PW = 1.02), cordiform ( Fig. 15b). Sides moderately arcuate in distal half, deeply sinuate basally; hind angles prominent but broadly rounded; anterior angles small, weakly protruding. Laterobasal impressions deep, simple; lateral margins narrow, slightly reflexed; basal bead completely erased except near the hind angles, apical bead shortly interrupted at middle. Two lateral setae, the posterior setigerous pore in a deep buttonhole-shaped depression, the anterior setigerous pore well forward, at 3/4 of the length of the pronotum. Sides of the prosternal process not bordered.

Meso- and metathorax. – Elytra much wider than pronotum, subparallel in first half, fusiform at apex, humeri obliquely truncate. Striae deep and well impressed, intervals slightly convex basally and on the disc, flat in the apical zone. Parascutellar setiferous pore present; third interval with 3 small setiferous punctures. Subapical sinuation weak; apex subtriangular. Umbilicate series of 16 (left) or 15 (right) setiferous punctures, distributed 5-1-10 or 5-1-9; penultimate seta very long. Metathoracic wings vestigial.

Abdomen. – Last visible abdominal ventrite feebly arcuate apically, with one pair of setae along its apical margin.

Legs. – Long and slender; metafemora without setae on the anterior ridge and with two ventroposterior setae. Protibiae and mesotibiae dorsally canaliculate (protibiae: sculpture obsolete on apical third); metatibiae dorsally carinate. Tarsi dorsally convex; MTT1 as long as MTT2+3 ( Fig. 15d). PT4 and MST4 apically bilobed, prolonged by hyaline spatuliform phanera that are twice as long as the apical lobes. Apex of MTT4 emarginate with small triangular ventral lobes, the outer lobe twice as long as the inner lobe; with a pair of strong apical dorsolateral setae, hyaline ventroapical setae at the tip of the lobes and 2 ventral setae each side in parallel rows.MTT1–3 asymmetrical, outer side obliquely truncate at apex, mm 0.5 mm 1 mm

0.25

a

d

Geographic distribution. – Western slope of the Cordillera Occidental in northern Ecuador ( Pichincha province). If the collection site is Reserva Pahuma, on the road from Calacalí to La Independencia as indicated on the locality label, the correct coordinates of the type locality are around 0°01’N, 78°38’W.

Etymology. – The name on the nearest town to the type locality, Calacali, is used as a noun in apposition.

Glyptolenoides formicarius sp. nov.

mm

1

0.5 mm

e

Fig. 16. Glyptolenoides formicarius sp. nov.

a. Habitus, paratype, ♂, Bellavista, Ecuador. b-e. Aedeagus. b -c. Lateral. d. Dorsal. e. Ventral.

so that the outer apical dorsolateral seta is displaced significantly further back than the inner dorsolateral seta ( Fig. 15d). Fifth tarsomeres asetose ventrally.

Male genitalia. – Fig. 15c. Median lobe: basal bulb of moderate size, recurved; median shaft almost straight in lateral view, then slightly bent downward before apex; ventral face carinate; apex acuminate, subtriangular in dorsal view, pointed in lateral view. Endophallus without sclerotized structures.

Female genitalia. – Unknown.

Habitat. – Montane cloud forest at around 2000 m a.s.l. Biology unknown. Flightlessness and eye reduction suggest this species may be an inhabitant of the leaf litter.

( Fig. 9g & 16)

ZooBank: https://zoobank.org/ DD5FE709-0BBC-4904-8FCF-9BFE4EB02A60

Holotype, ♂, Ecuador, Provincia Pichincha, Bellavista Reserve , 12 km S Nanegalito, 00°00′32″S, 78°41′08″W, 2150 m, 30.X.1999, 215, cloud forest litter, R. Anderson leg. ( CMNC). GoogleMaps

Paratypes ( 10 ♂, 12 ♀)

- 1 ♂, Ecuador, Provincia Cotopaxi, San Francisco de las Pampas , Otonga , 2000 m, 27.VII.1999, I.G. Tapia leg. ( QCAZ) ;

- 1 ♀, Ecuador, Provincia Cotopaxi, Otonga , foresta nublada, 2000 m, 29.VII.2004, G. Osella leg. ( CPMG) ;

- 1 ♂: Ecuador, Otonga , 0°42.261’S, 79°01.507’W, 2015 m, 26.VI.2014, pitfall, E. Tapia leg. ( CGA) GoogleMaps ;

- 1 ♀: Ecuador, Otonga , 2015 m, pitfall, 3-14.VIII.2014, E. Tapia leg. ( CGA) ; - 1 ♂, Ecuador, Provincia Pichincha, Bellavista Reserve, Ridge trail, 12km S Nanegalito, 0°0′54″S, 78°40′56″W, 2250 m, 28.X.1999, ECU1A99 211l, R.Anderson leg. // Loan from SEMC 10.11.00 ( UASM) GoogleMaps ;

- 1 ♀, 1 ♂, Ecuador, Provincia Pichincha, Bellavista Reserve , 12 km S Nanegalito, 00°00′32″S, 78°41′08″W, 2150 m, 30.X.1999, 215, cloud forest litter, R. Anderson leg. // Loan from CMNC 26.02.02 ( UASM) GoogleMaps ;

- 1 ♀, Ecuador, ProvinciaPichincha , Nanegalito, 12 km S, BellavistaNature Reserve, 0°0′54″S, 78°40′56″W, 2200 m, 28.X.1999, ECU1F99 069, ex yellow pan trap, S. Marshall leg. // Loan from SEMC 10.11.00 ( UASM) GoogleMaps ;

- 8 ♀, 7 ♂, Provincia Pichincha, Bellavista Reserve, Ridge trail, 12 km S Nanegalito, 00°00′54″S, 78°40′56″W, 2250 m, 28.X.1999, 211a-g, cloud forest litter, R.Anderson leg. // Loan from CMNC 26.02.02 ( UASM, CPM) GoogleMaps .

Diagnostic combination. – Brachypterous; very small size ( 4.5-4.7 mm); dorsum brownish with faint copperish reflections; eyes moderately flattened; basal sinuation of the sides of the pronotum weak; elytral striae obsolete basally, intervals 5-7 canaliculate apically; MTT4 very shortly bilobed.

Description

Habitus . – Fig. 16a. Brachypterous. Body length: 4.5-4.7 mm.

Colour. – Head, pronotum and elytra light brown, with very faint copperish reflections; antennae, mouthparts and legs flavo-testaceous. Upper surface smooth and shiny.

Microsculpture, mesh pattern. –Head:slightly transverse, veryshallow; pronotum: transverse, almost obsolete; elytra: narrow transverse meshes, shallowly impressed.

Head. – Broad, convex; eyes large but moderately bulging; genae flat, oblique, half as long as the eyes; collar constriction distinct on the dorsal face. Supraocular setae especially thick and strait. Mandibles long and acute. Mentum tooth simple, triangular, with a blunt apex. Palpi relatively short. Antennae moderately long, with four antennomeres extending backward beyond the base of the pronotum.

Prothorax. – Pronotum as long as wide, cordiform, sides weakly sinuate in basal third. Hind angles very obtuse, almost rounded, the basolateral setigerous pore in a large and deep buttonhole-shaped depression; anterior angles rounded, not protruding; laterobasal impressions shallow; lateral margins narrow, slightly reflexed; basal and apical beads almost obsolete, interrupted at middle; two pairs of lateral setae. Sides of the prosternal process smooth, not bordered.

Meso - and metathorax. – Elytra oval-shaped, humeri narrow, subapical sinuation very weak. Striae obsolete basally and laterally, very shallow and irregularly interrupted on the disc; intervals flat except in apical fourth where the intervals 5-7 are depressed, almost canaliculate. Parascutellar setiferous pore present; third interval with 2 or 3 small setiferous punctures: at basal fourth (sometimes absent), at middle and near apex. Umbilicate series of 13 to 15 setiferous punctures, forming three groups: humeral with 5 or 6 setae, median with one, subapical with 7 or 8. Metathoracic wings vestigial.

Abdomen. – Last visible abdominal ventrite evenly rounded apically, with one pair ( ♂) or two pairs ( ♀) of setae along its apical margin.

Legs. – Long and slender. Metafemora asetose. Protibiae and mesotibiae dorsally canaliculate; metatibiae dorsally carinate. Tarsi moderately convex dorsally, tarsomeres 1-3 bisulcate; MTT1 as long as MTT2+3. PT4 and MST4 apically bilobed, with a pair of narrow, hyaline spatuliform phanera. Apex of MTT4 emarginate with small ventral lobes, the outer lobe slightly longer than the inner lobe; with a pair of strong apical dorsolateral setae, and only one hyaline ventroapical seta,aslong asMTT5, at the tipof the outer lobe; 2 ventral setae each side in parallel rows. MTT1–3 slightly asymmetrical, not distinctly truncate at apex, but the outer apical dorsolateral seta is displaced significantly further back than the inner dorsolateral seta.Fifth tarsomeres asetose ventrally.

Male genitalia. – Fig. 16b-e. Median lobe strongly arcuate; apex triangular in lateral view, spatulate in dorsal view. Endophallus with a small, sclerotized structure, located medially when the endophallus is not everted.

Female genitalia. – Fig. 9g. Gonocoxite 2 short, broad basally, almost triangular, with 2 ensiform setae on the outer ridge. Bursa copulatrix elongate, with a faintly sclerotized dorsal pouch. Spermathecal duct undifferentiated; spermatheca arcuate, claviform, broadest at apical 2/3; spermathecal gland entering at basal 1/3 of the spermatheca.

QCAZ

Museo de Zoologia, Pontificia Universidad Catolica del Ecuador

UASM

University of Alberta, E.H. Strickland Entomological Museum

CPM

Christoffel Park Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Histeridae

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