Trachylophus sinensis Gahan, 1888

Lu, Yafei, Li, Zhu & Chen, Li, 2019, Two new species of the genus Trachylophus Gahan, 1888 (Coleoptera, Cerambycinae Cerambycini) from China, Zootaxa 4706 (4), pp. 580-586 : 580-581

Trachylophus sinensis Gahan, 1888

( Figs. 1–2 ).

Trachylophus sinensis Gahan, 1888: 60 . Type locality: China.

Trachylophus piyananensis Kano, 1933: 261 . Type locality: China, Taiwan.

Diagnosis. Adults ( Fig. 1 ). Body dark brown, covered with yellowish brown hair. Antennae exceeding elytral apex by two segments in male and reaching elytral apex in female. Prothorax with a small lateral tubercles at each side. Pronotum with median longitudinal ridges and furrow on disc ( Fig. 1C ). Elytral apex obliquely truncate and each sutural angle with a short spine. Procoxal cavities weakly angular externally; prosternal intercoxal process tuberculate ( Figs. 1D & E ).

Male genitalia ( Fig. 2 ). Tegmen moderately curved in profile; Parameres stout, with length about same as basal width, covered with brown hair ( Figs. 2 A–C). Median lobe slightly curved with tipped apex. Median struts 1/2 times as long as whole median lobe in length; ventral plate longer than dorsal plate, median foramen rounded. Endophallus moderately thin and long, followed by an ejaculatory duct ( Figs. 2 D–F); Tergite VIII wider than long, apex emarginated; densely covered with short brown setae apically; Spiculum gastrale about 1.5 times as long as tergite VIII. Spiculum relictum about half of tergite VIII ( Figs. 2 G–I).

Specimens examined. 1 male, Jianfengling Natural Reserves , Hainan, China, 22-V-2014, leg. Guiqiang Huang (SWU) ; 4 males, Mt. Diaoluoshan , Hainan, China, 23-V-2014, leg. Guiqiang Huang (SWU) ; 1 male, Hunan, China (SWU) ; 2 males, Jiangjunzhai , Mt. Mangshan , Yizhang county, Chenzhou city, Hunan, China, (4–6)- VI-2019, leg. Jianyue Qiu (SWU) ; 1 female, Tonggu , Zhongshan county , Hezhou city, Guangx China, V-2019, leg. native collector (SWU) .

Distribution. China: Fujian, Hainan, Hong Kong, Hubei, Hunan, Jiangxi, Guangdong, Guangxi, Guizhou, Sichuan, Taiwan, Zhejiang; Myanmar; Vietnam.

Remarks. This species is widely distributed in China, Myanmar and Vietnam. We take this opportunity to describe the male genitalia. Anatomical observations revealed variations in the male genitals of this species in the shape of the tergite VIII, the emargination in the middle of the apex of the tergite VIII.

Figures

FIGURE 1. Trachylophus sinensis, male, A–B, adult habitus. A. Dorsal view. B. Ventral view. C. Prothorax. D–E, Prosternal intercoxal process. D. Ventral view. E. Lateral view. A–B, Scale bars = 1cm; C–E, Scale bars = 1mm.

FIGURE 2. Trachylophus sinensis Gahan, 1888, male genitalia. dorsal view. A–C. Tegmen. D–F. Median lobe. G–I.Abdominal sternum VIII. Scale bars = 0.5mm.