Aplosonyx sublaevicollis Jacoby, 1889

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 sublaevicollis Jacoby, 1889

Figs 20D , 25A-F

Haplosonyx sublaevicollis Jacoby, 1889: 218.

Aplosonyx sublaevicollis : Maulik 1936: 615.

Additional specimens examined.

♂, China, Yunnan Province, Xishuangbanna, Xiaomengyang ; 850 m a. s. l.; 25 Jun. 1957; Lingchao Zang leg.; IZAS; IOZ(E)1566505 . ♂, same data as for preceding; 24 Jun. 1957; Lingchao Zang leg.; IZAS; IOZ(E)1566514 . ♂, China, Yunnan Province, Xishuangbanna, Damenglong ; 650 m a. s. l.; 6 May 1958; IZAS; IOZ(E)1566540 . ♂, same data as for preceding; IZAS; IOZ(E)1566541 . ♂, China, Yunnan Province, Xishuangbanna, Damenglong ; 650 m a. s. l.; 7 May 1958; Chunpei Hong leg.; IZAS; IOZ(E)1566508 . ♂, same data as for preceding; IOZ(E)1566510 . ♂, China, Yunnan Province, Xishuangbanna, Damenglong ; 650 m a. s. l.; 6 May 1958; Zhizi Chen leg.; IZAS; IOZ(E)1566513 . ♂, same data as for preceding; Chunpei Hong leg.; IZAS; IOZ(E)1566517 . ♂, China, Yunnan Province, Xishuangbanna, Damenglong ; 650 m a. s. l.; 6 May 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566518 . ♀, same data as for preceding; 7 Oct. 1958; Zhizi Chen leg.; IZAS; IOZ(E)1566534 ♂, same data as for preceding; 7 Oct. 1958; Zhizi Chen leg.; IZAS; IOZ(E)1566535 . ♀, China, Yunnan Province, Xishuangbanna, Menghun ; 750 m a. s. l.; 2 Jun. 1958; Chunpei Hong leg.; IZAS; IOZ(E)1566507 . ♂, same data as for preceding; 5 Jun. 1958; Chunpei Hong leg.; IZAS; IOZ(E)1566512 . ♂, same data as for preceding; 30 May 1958; IZAS; IOZ(E)1566515 . ♂, same data as for preceding; 30 May 1958; IZAS; IOZ(E)1566516 . ♂, same data as for preceding; 30 May 1958; Chunpei Hong leg.; IZAS; /IOZ(E)1566519 . ♀, China, Yunnan Province, Xishuangbanna, Yunjinghong ; 900 m a. s. l.; 27 May 1958; Yiran Zhang leg.; IZAS; IOZ(E)1566509 . ♂, China, Yunnan Province, Xishuangbanna, Mengla ; 650 m a. s. l.; 18 May 1958; Fuji Pu leg.; IZAS; IOZ(E)1566520 . ♀, China, Yunnan Province, Xishuangbanna, Menghun ; 1400 m a. s. l.; 3 Jun. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566556 .

Diagnosis.

This species can be distinguished from other Chinese species by its purplish blue elytra, and the apex of the pronotum without a raised area. This species differs from A. chalybeus in the pronotum being widest at its posterior corners.

Redescription.

Male. Length 9.0-10.8 mm, width 4.8-5.2 mm.

Head, antennae, pronotum, scutellum and ventral surface of body yellow, legs brown with femur yellow, elytra purplish blue.

Vertex covered with several large punctures. Interocular space 1.65 × as wide as transverse diameter of eye. Interantennal space 1.4 × as wide as transverse diameter of antennal socket. Frontal tubercles distinctly raised, hook-like, 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 twice as long as second; antennomere 4 longest, approximately 1.8 × 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 2 × as wide as long, lateral border margined, widest at posterior corners; middle of disc with transverse furrow; closely covered with large punctures in furrow and with sparsely small punctures in other parts of pronotum.

Scutellum triangular, smooth, impunctate.

Elytra: wider than pronotum, 0.8 × as long as body, 1.7 × as long as wide, epipleura wide at anterior 1/4, posteriorly gradually narrowing towards apex, dorsal surface slightly convex, irregularly covered with large punctures, the interstices of punctures wider than diameter of individual punctures, approximately 2 × as wide as diameter of individual punctures and lightly covered with small punctures in 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, with two subtriangular incisions.

Aedeagus slender, parallel-sided, basally widened, narrowed in middle, apex distinctly pointed, in lateral view base and apex distinctly bent.

Female. Length 8.8-10.6 mm, width 4.6-5.4 mm.

Antennae slightly thinner than in male, antennomere 2 shortest, antennomere 3 approximately 1.5 × as long as second; antennomere 4 longest, 1.5 × as long as antennomeres 2 and 3 combined; apical sternite without incisions.

Distribution.

China: Yunnan; Laos; Thailand; Myanmar; Malaysia; Indonesia.

Figures

Figure 20. Aedeagus (dorsal view) A A. pictus B A. robinsoni C A. rufipennis D A. sublaevicollis F A. tianpingshanensis E A. yunlongensis. Scale bars 0.5 mm (A-F).

Figure 25. Aplosonyx sublaevicollis A-C habitus 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).