Glyptoma cicatricosa MOTSCHULSKY, 1857

Irmler, Ulrich, 2015, The neotropical genus Glyptoma ERICHSON, 1839 with descriptions of new species and a key to the species (Coleoptera: Staphylinidae: Osoriinae), Beiträge Zur Entomologie = Contributions to Entomology 65 (2), pp. 297-325 : 299-301

Glyptoma cicatricosa MOTSCHULSKY, 1857

( Figs 4A, B , 20 B )

Glyptoma cicatricosa MOTSCHULSKY, 1857: 494 Glyptoma longipes SHARP, 1887: 723 new synonymy

Type material examined: 2 males, Columbia: Colomb. Without further data ( ZMML). Both specimens in ZMML had identical labels. One male is herein designated as lectotype by fixing a lectotype label to the pin .

G. longipes SHARP, 1887 :female, holotype: Guatemala: Cerro Zunil, leg. Champion ( BMNH).

Further material examined: Guatemala: female, without further data, leg. Conradt ( SDEI) ; Costa Rica: 5 females, Puntarenas Prov., Las Cruces, Biol. Sta. (82°57.58'W, 8°47.14'N), 1330 m elev., under bark, 29.5.2004, leg. J. S. Ashe, Z. Falin, I. Hinojosa ( KNHM, UIC), # CR1 AFH04024 ; Columbia : male, without further data, leg. Wehnke, coll. Kraatz ( SDEI) ; without further data, leg. Thovey, coll. Kraatz ( SDEI); Venezuela: male, without further data, col. Dr. Moritz ( NHMW) ; St. Cristobal (72°11'W, 7.44'N), West-Venezuela, coll. Klima ( NHMW) ; male, Carabobo, Mun. Bejuma, Via Palmichal (61°24'W, 6°18'N), 750–850 m elev. 11.2005, leg. Brachat ( UIC) ; male, Yaracuy, San Felipe env., Sierra de Aroa (68°50'W, 10°22'N), 1300–1600 m elev., 19.11.2005, leg. Brachat ( VAC) ; female, Aragua, 16 km N. Maracay (67°29'W, 10°24'N), 1500 m elev., under bark, 7.3.1995, leg. R. Brooks, #53 ( KNHM) ; Guyana: female, Region 8, Iwokrama Forest, Turtle Mt. , base camp (58°43.5'W, 4°43.5'N), 50 m elev., under bark, 1.6.2001 leg. R. Brooks, Z. Falin, #GUY1BF01 ( KNHM) ; French Guyana: 3 females, Réserve Trésor (52°16.44'W, 4°36.37'N), 225 m elev., collected by Window trap, 9.2009, 12.2009, leg. S. Brulé ( BMNH) ; 4 females, Saül , under bark, March- April 1999, leg. A. Berkov ( AMNH) .

Diagnosis: Unfortunately, the type specimen of G. longipes is a female and the specimens of Costa Rica are also all females. I found no distinct differences between the Central American specimens and the northern South-American specimens. Moreover, SHARP (1887) did not compare G. longipes with G. cicatricosa . Therefore, I synonymised G. longipes with G. cicatricosa . The differences between the two species given by SCHEER- PELTZ (1970) are not correct. Type specimens of both G. longipes and G. cicatricosa are 4.0 and 4.2 mm long, respectively, and not 4.2 and 4.5–5.0 mm as published by SCHEERPELTZ (1970). The species is very similar to G. rossii and G. laeviceps . It can be differentiated from G. laeviceps by the diagonal micro-striae of the head and from both species by the absence of the lateral carinae on the elytra: The aedeagus strongly resembles that of G. rossii , but the parameres are shorter and the central lobe is less angulate. Unfortunately, beside the two type specimens only three male specimens were found in the material studied. They all showed no differences in the aedeagus.

Description: Length: 3.5–3.9 mm. Colouration: Black; antennae dark brown, legs slightly lighter brown.

Head: 0.51 mm long, 0.63 mm wide; eyes large, slightly prominent; longer than temples; temples convergent; narrowed to neck in smooth convex curve; sides in front of eyes parallel up to base of antennae; clypeus strongly narrowed in deeply sinuate curve to front edge; punctation sparse and moderately deep; interstices between punctures two to three times as wide as diameter of punctures; on disc with several larger punctures than laterally; between large punctures with denser micro-punctation; vertex with dense diagonal micro-striae; surface of vertex matt and with iridescent shine; clypeus without microstriae; surface nearly polished.

Antennae as long as head, pronotum and half of elytra combined; first antennomere thick, approximately rectangular; 1.5 times as long as wide; second antennomere slightly narrower than first; much wider than long; third approximately quadrate; following antennomeres as wide as third, but longer than wide; tenth antennomere again approximately quadrate; antennomeres four to eleven covered by long setae; setae as long as width of antennomeres.

Pronotum: 0.60 mm long, 0.60 mm wide; widest in middle; anterior half smoothly narrowed to neck in convex curve; posterior half deeply emarginate to posterior margin; posterior angles nearly rectangular; punctation very dense; punctures very large; mostly coriaceous; interstices between punctures less than one fifth as wide as diameter of punctures; deep groove in midline of anterior half; margined by distinct ridge; in posterior half with irregular and indistinct transverse impression; surface of punctures with deep isodiametric microsculpture; ridges between punctures and along central groove without or with weak microsculpture; surface shiny.

Elytra: 0.93 mm long, 0.82 mm wide; widest in middle; sides smoothly curved in slight convex curve; shoulders shortly denticulate; shoulders and posterior angles obtuse; discal carina distinct; lateral carina absent or very shortly developed near shoulders; punctation dense and partly coriaceous; small stripe adjacent to suture impunctate; between stripe and discal carinae three irregular rows of large punctures; on lateral side of discal carinae at least three irregular rows of large punctures; interstices between punctures less than one fifth as wide as diameter of punctures; sutural impunctate stripe with dense isodiametric microsculpture; surface matt; remaining surface with less dense isodiametric or longitudinal microsculpture; surface slightly shiny; in particular, ridges between punctures more shiny than surface of punctures.

Abdomen with transverse groove at base of segments III to V; within grooves transverse line of large punctures; groove on segment III deeper than on segment V; segments VI to VIII without basal groove; outside basal groove with fine setiferous punctation; distinctness of isodiametric microsculpture decreasing from anterior to posterior segments; thus, anterior segments matt; posterior segments shiny.

Aedeagus smoothly curved from base to apex; angle between basal and apical lobe obtuse; apex shortly point- ing ventrally; numerous sensillae on sides of apical lobe; sensillae denser near apex than near base; paramere thin; with apical seta; only reaching middle of apical lobe.

Figures

Figs 20: Fore body of Glyptoma laeviceps (A), G. cicatricosa (B), G. rossii (C), G. opacum (D), G. simile (E); scale bar 0.5 mm.

Figs 2–6: Aedeagus (A), antenna (B) and microsculpture of head (C) of Glyptoma laeviceps (2), G. opacum (3), G. cicatricosa (4), G. rossii (5), G. simile (6); scale bar: 0.1 mm.