Aplosonyx wudangensis, Feng & Yang & Liu & Li, 2023

Feng, Chuan, Yang, Xing-Ke, Liu, Yang & Li, Zhi-Qiang, 2023, Revision of Aplosonyx Chevrolat, 1836 (Coleoptera, Chrysomelidae, Galerucinae) from China, with descriptions of three new species, ZooKeys 1154, pp. 159-222 : 159

Aplosonyx wudangensis sp. nov.

Figs 29C , 31A-F

Type material.

Holotype: ♂, China, Hubei Province, Wudang; 15 Aug. 1984; IZAS; IOZ(E)1566640.

Diagnosis.

The new species closely resembles A. yunlongensis in spots of elytra, but the pronotum of A. yunlongensis has three obvious black spots. The new species is different in that the black spots on both sides of pronotum are small and almost invisible. The new species also closely resembles A. tianpingshanensis in the aedeagus, where the apex is wide and flat in A. tianpingshanensis , while the new species is round and slightly pointed. The interstices of punctures on elytra of new species are narrower than that on the elytra of A. yunlongensis and A. tianpingshanensis .

Description.

Male. Length 5.0 mm, width 3.1 mm.

Head, antennae, pronotum, elytra and leg yellow, vertex, scutellum, and ventral surface of the body black, apical ventrite of abdomen yellow, pronotum with a black spot in middle, the black spots on both sides are small and almost invisible. each elytron with five black spots, middle and apex with one pair of spots and base with one spot.

Vertex sparsely covered with punctures. Interocular space 2.1 × as wide as transverse diameter of eye. Interantennal space 1.5 × as wide as transverse diameter of antennal socket. Frontal tubercles transverse, each separated by a deep furrow; antennae slender, 0.75 × as long as body; antennomeres 1-3 shiny; antennomeres 4-11 covered with pubescence, antennomere 2 shortest, antennomere 3 slightly longer than antennomere 2, approximately 1.4 × as long as second; antennomere 4 longest, approximately 1.2 × as long as antennomeres 2 and 3 combined; antennomeres 5-10 gradually shortened, shorter than antennomere 4; antennomere 11 slightly longer than antennomere 10, pointed.

Pronotum approximately 1.8 × as wide as long, lateral border margined, widest at anterior 1/3; disc with transverse furrow, the punctures are evenly distributed on the disc.

Scutellum triangular, smooth, impunctate.

Elytra: wider than pronotum, 0.8 × as long as body, 1.6 × as long as wide, epipleura wide at anterior 1/3, posteriorly gradually narrowing towards apex, dorsal surface slightly convex, regularly covered with large and deep punctures, partially arranged in ten rows in each elytron, the interstices of punctures lightly wider than diameter of individual punctures and covered with small punctures in the interstices.

Metasternum 2 × as long as the mesosternum. Ventral surface of abdomen with five ventrites, ventrite 1 longest, ventrites 2-4 gradually shortened, apical ventrite slightly longer than ventrite 3, two subtriangular incisions.

Aedeagus slender, parallel-sided, basally widened, apex rounded, in lateral view moderately bent.

Etymology.

This new species was named after the type locality.

Distribution.

China: Hubei.

Figures

Figure 29. Aedeagus (dorsal view) A A. ancorella sp. nov. B A. nigricornis sp. nov. C A. wudangensis sp. nov. Scale bars: 0.5 mm (A-F).

Figure 31. Aplosonyx wudangensis sp. nov. A-C habitus of holotype, IZAS IOZ (E) 1566640 D-F aedeagus A, D dorsal views B, E ventral views C, F lateral views. Scale bars 0.5 mm (D-F); 1 mm (A-C).