Lithocharodes hanagarthi, Irmler, 2021

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 : 48

Lithocharodes hanagarthi spec. nov.

urn:lsid:zoobank.org:act:CB47DB88-4D42-4FC9-AF39-A5ED1D1758A3

Figs 9 a-d, 43 B, 46 B

Type material: male, holotype: Peru, Huanuco, Llullapichis , Panguana Biol. Stat. (74°5.68'W, 9°37'S), banana plantation, 17.5.1975, leg. W. Hanagarth ( UIC). Paratypes: Peru, Huanuco, Llullapichis, Panguana Biol. Stat. (74°5.68'W, 9°37'S), floodplain forest, male, 6.5.1976, leg. W. Hana garth; same location and collector but Rio Pachitea, Cocha , pitfall trap #216, BPC, female, 9.5.1976 ( UIC) .

Diagnosis: Lithocharodes hanagarthi belongs to the group of light coloured species with sparse punctation of the head. In this respect, L. hanagarthi closely resembles L. fuscipennis but the eyes of L. hanagathi are larger. In L. hanagarthi , postocular sides are 2.5 times as long as eyes, whereas in L. fuscipennis postocular sides are three times as long as eyes. Males of L. hanagarthi are easily to identify by the small nearly circular aedeagus with endophallus covered only by minute teeth.

Description: Length: 4.6 mm. Colouration: Light brown; head and elytra dark brown to black; small stripe at posterior margin of elytra light brown; legs slightly lighter brown.

Head: 0.78 mm long, 0.62 mm wide; eyes moderately long; postocular space 2.5 times as long as eyes; sides slightly divergent posteriad; posterior angles widely rounded; short part of posterior margin straight; interantennal furrows deep and moderately long; reaching posterior third of eyes; setiferous punctation deep and irregularly dense; on anterior vertex denser than on posterior vertex; interstices on anterior vertex shorter than diameter of punctures; interstices on posterior vertex as wide as diameter of punctures or even wider; space between interantennal furrows impunctate; vertex with wide impunctate midline; impunctate midline widened posteriad; surface without microsculpture; shiny. Antennae with first antennomere as long as half-length of head; second and third antennomere longer than wide; conical; subsequent antennomeres wider than long and increasing in width; fourth antennomere 1.5 times as wide as long; tenth antennomere nearly 2.5 times as wide as long; antennomeres four to eleven densely pubescent. Pronotum: 0.88 mm long, 0.55 mm wide; widest in anterior third; strongly convergent anteriad; posteriad, slightly convergent in middle third and approximately parallel in posterior third; posterior angles sub-rectangular; posterior margin slightly curved; setiferous punctation irregular and moderately deep; adjacent to wide impunctate midline with irregular line of 12 to 13 punctures; surface without microsculpture; shiny. Elytra: 0.79 mm long, 0.66 mm wide; sides nearly parallel; humeral angles sub-rectangular; posterior angles nearly rectangular; posterior margin slightly triangularly emarginate to suture; setiferous punctation moderately dense and deep; interstices between punctures nearly twice as wide as diameter of punctures; surface with weak microsculpture; less shiny than head and pronotum. Abdomen with weak setiferous punctation and weak microsculpture; posterior margin of tergite VII and sternite VII of male nearly straight or slightly convex; posterior margin nearly semi-circular. Mesotibia and metatibia with 3 subapical ctenidia each. Aedeagus small; oval; at anterior orifice slightly prominent; endophallus forming transparent band with central loop; covered by minute knobs; paramere slender; in apical third, nearly rectangularly flexed; along inner margin with several short setae.

Etymology: The name honours Werner Hanagarth, who extensively collected in the Panguana region and in other parts of Peru and unfortunately passed too early.

Figures

Fig. 8–12: L.-hanagarthi-group and L.-sordida-group:Lithocharodes boliviana (8), L. hanagarthi (9), L. obscura (10), L. bicornis (11), L. sordida (12); aedeagus (a), paramere (b), sternite VII of male (c), tergite VII of male (d); scale bare: A – D: 0.2 mm; B: 0.1 mm.