Sinodorcadion punctuscapum, Xie, Guang-Lin, Shi, Fu-Ming & Wang, Wen-Kai, 2013

Xie, Guang-Lin, Shi, Fu-Ming & Wang, Wen-Kai, 2013, A review of the genus Sinodorcadion Gressitt, 1939 with description of three new species from China (Coleoptera: Cerambycidae: Lamiinae), Zootaxa 3709 (6), pp. 581-590 : 587

5. Sinodorcadion punctuscapum , sp. nov.

( Figs 21–30 , 32 )

Material examined. Holotype, male, China: Zhejiang, Qingliangfeng, Qianqingtang station, 21 May 2012, leg. Guang-lin Xie, by hand, altitude 1100 m. Holotype is deposited in the Entomological Museum, Yangtze University (YZU), Jingzhou, Hubei, P. R. China.

Description. Male. Length 8.8 mm, maximum width of elytra 3.0 mm. Body reddish brown to fuscous, densely punctate, covered with gray-yellow pubescence. Antenna reddish brown except for scape and apices of antennomeres 3–11 fuscous, densely covered with gray-yellow pubescence. Head and pronotum thinly covered with pubescence, base of middle line of pronotum with a small vague pubescent patch. Scutellum reddish brown. Elytra unevenly covered with gray-yellow pubescence, each elytron with apical three quarters scattered with irregular pubescent patches.

Head densely punctate, punctures on frons coarser than vertex, occiput and gena. Frons subquadrate, slightly convex, provided with a vague middle longitudinal furrow extending to occiput. Lower eye lobe longer than broad, longer than gena in front view. Antenna about 1.4 times as long as body; antennal tubercles prominent; scape cylindrical, robust, slightly shorter than antennomere 4, inner and ventral side coarsely punctate; antennomere 3 longest, about 1.5 times as long as scape, antennomeres 3–5 gradually decreasing in length, antennomeres 6–7 and antennomeres 8–10 about equal in length respectively, antennomere 11 about as long as antennomere 5. Pronotum approximately as long as broad, anterior margin broader than posterior margin, disc convex, lateral tubercle small, mastoid. Scutellum short, rounded apically. Elytra long-oval, convex, apices slightly oblique-truncate, external angles of apices rounded, punctures on surface coarser than pronotum, successively becoming finer and sparser towards to apices. Sterna coarsely punctate, mesosternal process sparsely punctate. Sternites impunctate except for both sides of basal two segments sparsely punctate; last visible abdominal segment not reaching the apices of elytra. Legs long, tibiae approximately as long as femora.

Female. Unknown.

Male genitalia. Tegmen length approximately 1.75 mm, maximum width of ringed part 0.75 mm. Each lateral lobe length approximately 0.42 mm, basal width approximately 0.21 mm, ventral surface dotted with unevenly punctures, furnished with a fulvous bristle in each puncture, apices close to each other. Median lobe plus median struts length approximately 1.75 mm, strongly curved, median struts feebly sclerotized. Sclerites on ventral wall of basal region of internal sac feebly sclerotized and narrow, ejaculatory ampoule elongate.

Comments. The new species is distinctly distinguished from other members of the genus by its scape with coarse punctures.

Distribution. China (Zhejiang).

Etymology. The new species is named for the scape with punctures.

Figures

FIGURES 21 – 30. Habitus of Sinodorcadion punctuscapum sp. nov.. 21 – 25. Holotype, male. 21. dorsal view. 22, 25. ventral view. 23. lateral view. 24. scape. 26 – 28. male genitalia. 26. ventral view. 27. lateral view. 28. lateral lobe of tegmen, ventral view. 29 – 30. male tergite VIII. 29. dorsal view. 30. ventral view. Scales: 0.5 mm.

FIGURES 31 – 35. Pronotum of Sinodorcadion spp. 31. S. punctulatum Gressitt, male. 32. S. punctuscapum sp. nov. male. 33 – 34. S. jiangi sp. nov. 33. male. 34. female. 35. S. magnispinicolle sp. nov. female.