Lathrobium gyorgyi, Struyve, 2022

Struyve, Tim, 2022, On the soil dwelling Staphylinidae (Coleoptera) of Romania, Belgian Journal of Entomology 127, pp. 1-22 : 20

Lathrobium gyorgyi sp. nov.

urn:lsid:zoobank.org:act:7E743F2C-D1D3-4246-8DAE-042848C103C1

Figs 10 D-F, 11 D-E

TYPE MATERIAL EXAMINED. HOLOTYPE. ROMANIA: Orşova , 26.III.2019, 44.727°N 22.362°E: 1 male deposited in the HNHM. PARATYPES. ROMANIA: Orşova, 26.III.2019, 44.727°N 22,362°E: 3 exs. (cStr) + 2 females ( HNHM); Orşova , 27.V.2015, 44.727°N 22.361°E: 1 female (cStr).

ETYMOLOGY. The type material was collected with the help of György Makranczy.

DESCRIPTION. MEASUREMENTS: HL: 0.75; HW: 0.67; PL: 0.86; PW: 0.60; EL: 0.70; EW: 0.70; AL: 1.2; TL: 5.5 - 6.0.

Completely depigmented, orange-reddish. Head a little longer than wide, sides convex. punctures very sparse: in the middle distance about twice the size of the punctures itself. Microsculpture isodiametric, clearly present. Eyes reduced to a small yellow spot, maximal diameter about half the diameter of the second article of the antennae. Antennae about 1.5 mm long, third article about 0.7 times as wide as long, article X about as wide as long.

Pronotum elongate, parallel. Punctuation a little denser and stronger than on the head, absent on the broad middle line. Microsculpture absent.

Elytra about as long as wide, slightly wider near the apex. Punctuation as strong like on the pronotum, less dense. Surface without clear microsculpture but with irregular wrinkles.

Abdomen almost parallel, widest near the segment VI-VIII (visible segments 4-5). Punctuation small and sparse. Surface with strong isodiametric microsculpture.

FEMALE: tip of sternite VIII rounded, tergite VIII without modifications. Tergite IX like fig. X.

MALE: sternites VI-VII with a central weak impression. Sternite VII with between the normal yellow hairs some smaller black setae, more dense in the posterior part of the impression (only hairs drawn on fig. X). Sternite VIII with a small excavation at the posterior edge.

Aedeagus with the ventral plate in lateral view curved, top truncate. Dorsal plate with at the top first curved upwards then narrowly sickle-shaped curved downwards with a small lobe on the sickle. Between the ventral and dorsal plate only one sclerite with a curved top visible.

COMMENTS. This species belongs to a group of very similar species with in Romania: L. coecum Frivaldszky, 1883 , L. jeanneli Koch, 1939 , L. kaszabi Pace, 1983 and L. moraveci Janák, 1987 . L. coecum is geographically the closest, also found in the Banat mountains. The aedeagus is described by PACE (1983), the description of L. coecum by COIFFAIT (1982) was based on L. anophthalmum Fauvel at that time seen as a synonym, corrected by PACE (1984). Based on the aedeagus L. anophthalmum seems closer related. Externally no reliable difference with L. anophthalmum .

Figures

Fig. 10. Aedeagus in lateral (A and D) and ventral views (B and E) and dorsal plate of the aedeagus (C and F). A-C, Lathrobium trascauensis sp. nov. D-F, Lathrobium gyorgyi sp. nov. Scale bar: 1 mm. cale bar: 1 mm.