Aplosonyx orientalis Jacoby, 1892

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 orientalis Jacoby, 1892

Figs 11E , 15A-D , 16A-F

Haplosonyx orientalis Jacoby, 1892: 962.

Haplosonyx varipes Jacoby, 1892: 964. Synonymized by Kimoto 1989: 171.

Sphenoraia tonkinensis Laboissière, 1922: 102. Synonymized by Kimoto 1989: 172.

Aplosonyx orientalis : Maulik 1936: 619.

Type specimen examined.

♀ Syntype of Haplosonyx varipes : Haplosonyx varipes Jac.; Malewoon (Tenasserim)L. Fea. VII. VIII. 87; Jacoby Coll. 1909-28a.; Type H. T.; NHMUK 014596215.

Additional specimens examined.

8♂♂ 7♀♀, China, Guangdong Province, Enping Qixingkeng ; 22 Jun. 2022; Chuan Feng leg.; IZGAS . 4♂♂ 6♀♀, China, Guangxi Province, Maoershan ; 25 Aug. 2020; IZGAS . ♂, China, Yunnan Province, Xishuangbanna, Menghun ; 1200 m a. s. l.; 24 May 1958; Xuwu Meng leg.; IZAS; IOZ(E)1566693 . ♂, China, Yunnan Province, Xishuangbanna, Menghun ; 1200 m a. s. l.; 2 Jun. 1958; Xuwu Meng leg.; IZAS; IOZ(E)1566699 . ♂, China, Yunnan Province, Xishuangbanna, Menga ; 1000 m a. s. l.; 20 May 1958; Fuji Pu leg.; IZAS; IOZ(E)1566695 . ♀, China, Yunnan Province, Xishuangbanna, Mengzhe ; 870 m a. s. l.; 5 Sep. 1958; Shuyong Wang leg.; IZAS; IOZ(E)1566694 . ♀, China, Yunnan Province, Xishuangbanna, Mengzhe ; 870 m a. s. l.; 6 Jul. 1958; Fuji Pu leg.; IZAS; IOZ(E)1566697 . ♂, China, Yunnan Province, Xishuangbanna, Xiaomengyang ; 850 m a. s. l.; 5 Jul. 1958; Lingchao Zang leg.; IZAS; IOZ(E)1566696 . ♂, China, Yunnan Province, Xishuangbanna, Damenglong ; 650 m a. s. l.; 6 May 1958; Chunpei Hong leg.; IZAS; IOZ(E)1566698 . ♀, China, Yunnan Province, Cheli, Damenglong ; 600 m a. s. l.; 29 Apr. 1957; Dahua Liu leg.; IZAS; IOZ(E)1566700 .

Diagnosis.

This species can be distinguished from other species by the antennae with first antennomere yellow, and antennomeres 2-11 black; the legs are black with yellow femurs. This species differs from A. cinctus in having the aedeagus widened towards middle, in lateral view moderately bent.

Redescription.

Male. Length 9.5-10.4 mm, width 5.0-5.8 mm.

Head, pronotum, elytra, scutellum, and abdomen yellow; antennae black with first antennomere yellow; ventral surface of thorax black and in middle area yellow; legs black with femur, inner sides of tibiae, coxae and trochanters are yellow.

Vertex finely covered with punctures. Interocular space 2 × 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 approximately 1.8 × as long as second; antennomere 4 longest, approximately 1.4 × 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 with sparse small punctures in other parts of pronotum, in furrow the interstices between the punctures equal to diameter of individual punctures.

Scutellum triangular, finely covered with punctures.

Elytra: wider than pronotum, 0.75 × as long as body, 1.55 × 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 the punctures in rows approximately 2 × as wide as diameter of punctures and slightly covered with fine punctuation.

Metasternum 2 × as long as 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 gradually widening from base to middle, gradually narrowing from middle towards apex, at one tenth from apex strongly narrowing, ending in a pointed apex. in lateral view moderately bent, with distinctly bent apex.

Female. Length 9.2-10.5 mm, width 4.8-5.6 mm.

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

Distribution.

China: Guangdong, Guangxi, Yunnan; Vietnam, Laos, Thailand, Myanmar, India.

Figures

Figure 11. Aedeagus in dorsal view A A. fulvescens B A. gancuicus C A. nigriceps D A. omeiensis E A. orientalis F A. ornatus. Scale bars: 0.5 mm (A-E).

Figure 15. Aplosonyx orientalis A-D habitus of syntype, NHMUK A dorsal view B ventral view C lateral view D head view. Scale: 1 mm (A-D).

Figure 16. Aplosonyx orientalis 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).