Thinodromus (s. str.) stockyus Gildenkov, 2022

Gildenkov, M. Yu., 2022, New species of the genus Thinodromus Kraatz, 1857 (Coleoptera: Staphylinidae: Oxytelinae) from southeastern China, Far Eastern Entomologist 465, pp. 1-5 : 2-4

Thinodromus (s. str.) stockyus Gildenkov , sp. n.

https://zoobank.org/NomenclaturalActs/ 0D206B5D-C296-4253-A715-729D324B01C6

Figs 1–3

TYPE MATERIAL. Holotype, ♂, China: Fujian Province, Wuyi Shan National

Park, with labels “ CHINA: FUJIAN prov. Wuyi Shan Nat. Res. Guadun hill. (900–

1300 m). 1–2. VI 2001 Hlaváč & Coter lgt” (NKME). Paratypes: 2♂, same data as holotype (NKME and cMG) .

DESCRIPTION. MALE (holotype). Length about 3.0 mm. Body completely black, legs, antennae and mouthparts dark brown; integument slightly shining .

Body with short, light-coloured setation ( Fig. 1 ).

Head transverse, ratio of its length (from posterior margin of head to anterior margin of clypeus) to maximum width about 24:41. Temples poorly developed, eyes large, convex, occupy entire lateral surface of head. Head surface with rather distinct,

finely and dense punctation. Diameter of punctures about 3.0 times as small as eye facet, distances between punctures slightly smaller than their diameter, interspaces smooth, slightly shining. Antennae long, segments 1–11 strongly elongated.

Pronotum is rather narrow, ratio of pronotum length to its maximum width about 38:44 ( Fig. 1 ). Surface of pronotum with rather distinct, finely and dense punctation. Diameter of punctures about 3.0 times as small as eye facet, distances between punctures slightly smaller than their diameter, interspaces smooth, slightly shining. Punctation similar to that on head. Base of pronotal disc with well developed horseshoe-shaped depression; central part of disc with two small,

shallow, symmetrical, oval depressions and one oval, shallow depression along pronotum midline near its anterior margin.

Elytra wide, ratio of length of elytra to their combined width about 63:72. Elytra with clearly, fine and dense punctation. Diameter of punctures about 1.5 times as small as eye facet, distances between punctures significantly smaller than their diameter, interspaces smooth, slightly shining ( Fig. 1 ).

Abdomen delicately shagreened.

(body length 3.0 mm); 2 – aedeagus, dorsal view; 3 – aedeagus, lateral view. Scale bars for

3

Aedeagus of characteristic structure ( Figs 2, 3 ). Sclerotised anterior rib of paramere not extending onto its plane. Posterior margin of the paramere forms a characteristic deep, rounded notch, with a sclerotized margin ( Fig. 3 ). Anterior scute of internal sac of aedeagus shaped as two wide, straight plates ( Fig. 2 ).

FEMALE. Unknown.

DIAGNOSIS. The new species is very similar in coloration and long antennae to species from the “sericatus” species group. It differs from them in a stockier body, a rather narrow pronotum, and the absence of a tooth on its lateral margin at the base, characteristic of the “sericatus” group. It differs from most species of this group in the rather distinct punctation of the body. Reliably differs by the structure of aedeagus and a characteristic deep notch with sclerotized edge on the parameres.

DISTRIBUTION. China: Fujian Province.

ETYMOLOGY. From the Latin “ stocky ” – “stocky”, the name is associated with the external habitus.

Figures

Figs 1–3. Thinodromus (s. str.) stockyus Gildenkov, sp. n., holotype: 1 – body, dorsal view