Aploderus songi, Zheng & Li & Yan, 2018

Zheng, Fake, Li, Yujie & Yan, Xianghui, 2018, Two new species of the genus Aploderus Stephens (Coleoptera: Staphylinidae) from China, Zoological Systematics 43 (2), pp. 215-220 : 215-217

Aploderus songi sp. nov. ( Figs 1–8 )

Diagnosis. The present new species is closely similar to A. disparatus Zheng & Pu, 1999 from Sichuan, China, but can be distinguished from the latter by dorsal surface of head posteriorly without distinct median furrow, male 8th sternite deeply triangularly emarginate in middle of apical margin, and different the shape of the aedeagus. This species also resembles A. endogaeus Assing, 2003 from Turkey, but aedeagus is obviously different in shape.

Description. Male. Head and pronotum black; elytra reddish brown to blackish brown; abdomen blackish brown with yellow lateral and posterior margins; antennae dark brown; maxillary and labial palpi and legs yellowish brown to reddish brown.

Length 5.5–6.3 mm.

Head slightly broader than pronotum (ratio 1.02–1.12); without posterior median sulcus; vertex and lateral areas with moderately coarse, but not dense punctation; intervals with clear microreticulation; frons with clear microreticulation and a few punctation; eyes slightly large and convex, temples longer than eyes seen from above; Antennae with 1st segment as long as 2nd and 3rd combined; 2nd and 3rd elongate; 4th oblong; 5th as long as wide; 6th to 10th transverse; 11th about 1.5 times as long as 10th.

Pronotum transverse, about 1.16 times as broad as long, widest at or near anterior angles, shorter than elytra (ratio 0.52– 0.56) and narrower than elytra (ratio 0.85–0.86); anterior angles produced forwards, posterior ones rounded; on either side of midline with ill-defined shallow impressions with clear microreticulation and a few coarse punctation; in lateral areas with moderately coarse, slightly sparse punctation and clear microreticulation.

Elytra elongate, about 1.06–1.11 times as long as broad, slightly widened apicad; punctation coarse, dense and welldefined; intervals narrower than diameter of punctures; wings well developed, about triple as long as elytra.

Abdomen narrower than elytra (ratio 0.89–0.96), widest at 5th to 7th segments; tergites with fine and sparse punctation and distinct microsculpture. 8th sternite with deeply triangularly emarginate in middle of apical margin. Aedeagus as in Figs 6–8 .

Female. Similar to male, but 8th sternite almost truncate at apical margin.

Material examined. Holotype ♂, China, Sichuan, Yele Nature Reserve , Mianning County (28°50'– 29°00'N, 101°59′– 102°16'E; elev. 2760–3300 m), 30 July 2005, coll. Dianyuan Song. Paratypes. 1♂, same data as holotype; 1♂, 11 August 2005 , others same data as holotype; 1♂ 1♀, Wanba , Jiulong County (28°19'– 28°20'N, 101°07'– 102°10'E; elev. 3520 m), 5 August 2006, coll. Dianyuan Song.

Habitat and Distribution. The species was found in cow dung. It is present known from the type locality in western Sichuan.

Etymology. The specific epithet is patronymic in honor of the collector of the holotype, Mr. Dianyuan Song.

Figures

Figures 1–8. Aploderus songi sp. nov. 1. Habitus, male. 2–3. Forebody. 2. Male. 3. Female. 4–5. 8th sternite. 4. Male. 5. Female. 6–8. Aedeagus. 6. Ventral view. 7. Lateral view. 8. Dorsal view. Scale bars: 1=2mm; 2=1mm; 3=500µm; 4–8=200µm.