Troglocollops (Troglocollopsoides) sinicus Tong & Yang, 2022

Tong, Junbo, Tshernyshev, Sergei E., Liu, Haoyu & Yang, Yuxia, 2022, First record of the genus Troglocollops (Coleoptera, Malachiidae) from China with description of a new species, Zootaxa 5195 (5), pp. 492-498 : 494-496

publication ID	https://doi.org/ 10.11646/zootaxa.5195.5.7
publication LSID	lsid:zoobank.org:pub:718D1E38-DCC1-4AD4-8A69-915F9E1D7881
DOI	https://doi.org/10.5281/zenodo.7231492
persistent identifier	https://treatment.plazi.org/id/F009064A-FFA9-7207-6689-FE7E5B59FE62
treatment provided by	Plazi
scientific name	Troglocollops (Troglocollopsoides) sinicus Tong & Yang
status	sp. nov.

Treatment

Troglocollops (Troglocollopsoides) sinicus Tong & Yang , sp. nov.

( Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 )

Diagnosis. This species can be easily distinguished from other Troglocollops by the following characters: pronotum yellow with a black and longitudinal stripe in the middle; elytra black with blue metallic lustre and yellow apices ( Fig. 1a View FIGURE 1 ); antennomere 1 somewhat smaller than 3 ( Fig. 1b View FIGURE 1 ); endophallus with five strong spines and two groups of small spines near apex ( Figs 2c–d View FIGURE 2 ).

Description. Male. Length of body 3.3–4.2 mm, width at widest part of elytra 1.6–1.9 mm and at the base of elytra 1.2–1.5 mm.

Head black with greenish blue metallic lustre, antennae and mouthparts mostly yellow. Pronotum yellow with a black and greenish blue metallic lustre stripe in the middle. Elytra black with blue metallic lustre and yellow apices. Scutellar shield black with the same blue metallic lustre as elytra.Anterior and middle legs yellow with black coxae; posterior legs black with tibiae and tarsi yellow. Surface of body evenly covered with fine, adpressed, white hairs; temple and elytra additionally with sparse, erect, black setae ( Fig. 1a View FIGURE 1 ). Prosternum black, vesicles yellowish brown, thoracic mesepimera black.

Head slightly narrower than pronotum. Frons with large but shallow impression in the interocular area, and a transversal protuberance near the middle ( Fig. 1c View FIGURE 1 ). Clypeus narrow, transverse, straight. Labrum short, suboval, transverse. Antennae yellow with a small black spot at apex, evenly covered by short, white, semi-erect pubescence; antennomere 1 and 3 larger than all remaining antennomeres; 1 elongate; 2 small and almost completely hidden by 1; 3 strongly dilated, distinctly larger than 1; 4–11 subcylindrical and evenly sinuate at apex ( Fig. 1b View FIGURE 1 ).

Pronotum transverse, 1.4× wider than long, densely punctured, sparsely and finely pubescent, with smooth microsculpture between punctures; anterior margin slightly convex; all angles rounded and posterior ones obliquely truncate; posterior part impressed near base.

Scutellar shield short and transverse, almost hidden by pronotum.

Elytra oblong, slightly wider than pronotum at base, shining, with punctures sparse but distinct, and with double pubescence, sparse black bristles, and very fine, white, adpressed hairs; shoulders distinct but not protruding; apices evenly rounded, simple.

Hind wings normally developed.

Legs of moderate size. Posterior femora not reaching elytral apices. Tibiae thin, almost straight, those cross section rounded. All tarsi with 5 tarsomeres; tarsomere 2 of the anterior tarsi with comb extending over the segment; in all legs, tarsomere 5 longest, somewhat longer than combined length of tarsomeres 1 and 2 in anterior and middle legs, and of same length as these in posterior legs; claws narrow, with small lamella at base.

Ventral surface of abdomen densely punctured, with sparse, white, adpressed pubescence. Metathorax simple, lacking appendages. Pygidium transverse, with a triangular emargination at apex ( Fig. 2a View FIGURE 2 ); ultimate abdominal ventrite equilaterally triangular, evenly flexed and narrowed apically ( Fig. 2b View FIGURE 2 ). Tegmen elongate, with wide apodemes; aedeagus rounded apically; endophallus with five strong spines and two groups of small spines near apex ( Figs 2c–d View FIGURE 2 ).

Female. Similar to male species except for head lacking depression, antennae simple, and fore-tarsi without comb ( Fig. 3a View FIGURE 3 ). Pygidium sub-trapezoid with pair of short lateral struts anteriorly, apical margin emarginate ( Fig. 3b View FIGURE 3 ). Ultimate abdominal ventrite divided, with long spiculum ventrale ( Fig. 3c View FIGURE 3 ). Ovipositor elongate and membranous ( Fig. 3d View FIGURE 3 ).

Length of body 4.5 mm, width at widest part of elytra 2.1 mm and at the base of elytra 1.6 mm.

Material examined. Holotype: China: Xinjiang: ♂, Dushanzi District, Kelamayi City , 945 m, 26.VI.1957, Chunpei Hong leg ( IZAS) . Paratypes: China: Xinjiang: 1♂ 1♀, 80 km north of Mulei County, 25.VII.2006, Guodong Ren leg ( MHBU) .

Distribution. China (Xinjiang).

Etymology. The specific epithet means Chinese and refers to the type locality.