Aplosonyx robinsoni Jacoby, 1905

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 robinsoni Jacoby, 1905

Figs 20B , 21A-D , 22A-F

Haplosonyx robinsoni Jacoby, 1905: 6.

Aplosonyx robinsoni : Maulik 1936: 618.

Type specimen examined.

♂ Syntype of Haplosonyx robinsoni Siamese Malay States. Nawngchik: Bukit Besar. 2500 ft. May 1901. Coll. N. Annandale and H. C. Robinson. No; Jacoby Coll. 1909-28a. NHMUK015014023.

Additional specimens examined.

♀, China, Yunnan Province, Xishuangbanna, Mengzhe ; 870 m a. s. l.; 11 Jul. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566661 . ♀, same data as for preceding; 7 Jul. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566654 . ♂, same data as for preceding; 7 Jul. 1958; Fuji Pu leg.; IZAS; IOZ(E)1566655 . ♀, same data as for preceding; IOZ(E)1566657 . ♂, China, Yunnan Province, Xishuangbanna, Mengzhe ; 870 m a. s. l.; 7 Jul. 1958; Fuji Pu leg.; IZAS; IOZ(E)1566660 . ♂, same data as for preceding; IOZ(E)1566663 . ♀, China, Yunnan Province, Xishuangbanna, Mengzhe ; 870 m a. s. l.; 7 Jul. 1958; Fuji Pu leg.; IZAS; IOZ(E)1566666 . ♀, same data as for preceding; 5 Sep. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566667 . ♀, same data as for preceding; 4 Jul. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566668 . ♀, same data as for preceding; 11 Jul. 1958; Fuji Pu leg.; IZAS; IOZ(E)1566669 . ♀, same data as for preceding; IOZ(E)1566670 . ♀, China, Yunnan Province, Xishuangbanna, Mengzhe ; 870 m a. s. l.; 8 Jul. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566672 . ♂, same data as for preceding; 30 Jun. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566677 . ♀, same data as for preceding; 3 Jul. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566681 . ♂, same data as for preceding; 28 Jun. 1957; huyong Wang leg.; IZAS; IOZ(E)1566689 . ♂, China, Yunnan Province, Jinping ; 500 m a. s. l.; 12 May 1956; Keren Huang leg.; IZAS; IOZ(E)1566690 . ♀, same data as for preceding; IOZ(E)1566691 .

Diagnosis.

This species can be distinguished from other species by the yellow body, black legs, and yellow antennae with the apical two or three antennomeres black.

Redescription.

Male. Length 9.8-13.0 mm, width 6.5-7.4 mm.

Head, pronotum, scutellum, and elytra yellow; legs and ventral surface of the body black; antennae yellow with apical two or three antennomeres black.

Vertex finely covered with punctures. Interocular space 1.5 × as wide as transverse diameter of eye. Interantennal space 1.7 × as wide as transverse diameter of antennal socket. Frontal tubercles transverse, each separated by a deep furrow; antennae slender, 0.7 × 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, 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 2 × as wide as long, lateral border margined, widest at posterior corners; disc with deep transverse furrow, closely covered with large punctures in furrow and sparsely with small punctures in other parts of pronotum, the interstices of punctures equal to diameter of individual punctures in furrow, smooth and impunctate in middle of furrow.

Scutellum triangular, finely covered with punctures.

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, regularly covered with large and deep punctures, partially arranged in twenty rows in each elytron, the interstices of punctures wider than diameter of individual punctures, approximately 2 × as wide as diameter of 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, apex distinctly pointed, in lateral view base and apex moderately bent.

Female. Length 10.2-12.8 mm, width 6.6-7.2 mm.

Antennae slightly thinner than in male, antennomere 2 shortest, antennomere 3 twice as long as second; antennomere 4 longest, 1.6 × as long as antennomeres 2 and 3 combined; apical sternite without incisions.

Variability.

The syntype studied has different coloration, antennae with antennomeres 1-3 yellow, ventral surface of the body, coxae, and trochanters yellow.

Distribution.

China: Yunnan; 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 21. Aplosonyx robinsoni A, B habitus of syntype, NHMUK 015014023 C, D aedeagus A, C dorsal views B ventral views D lateral views. Scale bars 0.5 mm (C, D); 1 mm (A, B).

Figure 22. Aplosonyx robinsoni 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).