Lithocharodes collaris SHARP, 1885

Irmler, Ulrich, 2021, The Neotropical species of the genus Lithocharodes SHARP, 1876 (Coleoptera: Staphylinidae: Staphylininae: Xantholinini), Beiträge Zur Entomologie = Contributions to Entomology 71 (1), pp. 29-85 : 38

Lithocharodes collaris SHARP, 1885

Figs 43 G , 46 D

Lithocharodes collaris SHARP, 1885: 494

Type material examined: female, holotype: Guatemala ,

Cubilgnitz in Ver Paz, 1000 f. leg. Champion ( BMNH).

Diagnosis: Unfortunately, only the female holotype of L. collaris is known. Among the group of species with light colouration, L. collaris can be identified by the dense punctation of the head in combination with large eyes.

Description: Length: 5.3 mm. Colouration: Dark brown to blackish; abdomen brown; pronotum, legs and antennae light brown.

Head: 0.80 mm long, 0.63 mm wide; eyes slightly prominent; postocular sides twice as long as eyes; posterior angles widely rounded; posterior margin shortly straight in front of neck; setiferous punctation deep and irregularly dense; on anterior vertex extremely dense; partly coriaceous; on posterior vertex interstices between punctures half as wide as to as wide as diameter of punctures; narrow midline impunctate; interantennal furrows weak; reaching mid-length of eyes; surface without microsculpture; shiny. Antennae with first antennomere slightly shorter than half length of head; second and third antennomere conical and longer than wide; subsequent antennomeres wider than long and increasing in width; fourth antennomere twice as wide as long; tenth antennomere slightly more than twice as wide as long; all antennomeres pubescent. Pronotum: 0.76 mm long, 0.67 mm wide; widest in anterior third; anteriad, conically narrowed toward neck; posteriad, distinctly narrowed in middle third and nearly parallel in posterior third; setiferous punctation sparser than on posterior vertex; on average, interstices between punctures as wide as to twice as wide as diameter of punctures; wide midline impunctate; surface without microsculpture; glossy. Elytra: 0.76 mm long, 0.64 mm wide; humeral angles sub-rectangular; sides posteriad slightly divergent; posterior angles sub-rectangular; posterior margin nearly straight; setiferous punctation deep and moderately dense; on average, interstices as wide as diameter of punctures; surface with extremely weak ground sculpture; shiny. Abdomen with moderately fine setiferous punctation; distinctly finer than on fore-body: surface with dense transversely striate microsculpture at base of segments; in apical half of segments without microsculpture; glossy.

Figures

Fig. 43: Head of L. fuscipennis (A), L. hanagarthi (B), L. armata (C) L. spinigera (D), L. germana (E), L. rufula (F), L. collaris (G), L. nigripennis (H), L. puncticeps (I), L. simillima (J), L. aculeata (K), L. verhaaghi (L), L. fuscula (M), L. silvicola (N), L. brooksi (O), L. obscura (P); scale bar: 0.5 mm.

Fig. 46:Fore-bodyof:Lithocharodesfuscipennis(A),L. hanagarthi(B),L. armata(C),L. collaris(D),L. germana(E),L. nigripennis (F), L. puncticeps (G), L. rufula (H), L. simillima (I); scale bare: 0.5 mm.