Axinoscymnus macrosiphonatus Hoàng, 1979

Peng, Feng, Xie, Xiufeng, Peng, Zhengqiang, Wang, Xingmin & Chen, Xiaoshen, 2022, A taxonomic review of the genus Axinoscymnus Kamiya, with descriptions of three new species (Coleoptera, Coccinellidae), Zootaxa 5154 (4), pp. 431-453 : 447-449

Axinoscymnus macrosiphonatus Hoàng, 1979

( Figs 11a–j )

Axinoscymnus macrosiphonatus Hoàng, 1979: 14 .

Diagnosis. This species is similar to A. fumatus (Sicard) and A. singaporicus Pang et Gordon in the stout penis but can be separated from them by the black elytra and the penis with pointed apex and apical 1/2 to proximal swollen with membranous appendage ( Fig. 11a, 11h ). In A. fumatus , the elytra are dark brown and the penis with a blunt tip. In A. singaporicus , the elytra are also dark brown with yellowish brown basal margin and a blunt tip of penis.

Description. TL: 1.68–1.80 mm, TW: 1.17–1.21 mm, TH: 0.81–0.87 mm, TL/TW: 1.43–1.49, EL/EW: 1.11– 1.18, PL/PW: 0.46–0.50, HW/PW: 0.66–0.68, PW/EW: 0.70–0.72.

Body elongate oval, moderately convex, dorsum with white pubescence ( Figs 11a–f ). Head black or blackish brown ( Fig. 11f ), sometimes yellowish brown ( Fig. 11c ), antennae and mouthparts yellowish brown, tip of mandibles dark brown. Pronotum yellowish brown, scutellar shield dark brown. Elytra black with narrowly apical margins yellowish brown ( Figs 11b, 11e ). Prothoracic hypomeron and prosternum yellowish brown. Mesoventrite and elytral epipleurae dark brown. Metaventrite black. Legs yellowish brown.

Head with fine frontal punctures, as large as eye facets, 0.5–1.0 diameters apart. Eyes densely faceted, interocular distance about 0.2 times of head width ( Figs 11c, 11f ). Pronotal punctures slightly larger than those on frons, 1.0–1.5 diameters apart. Surface of elytra with punctures much larger than those on pronotum, separated by 1.0–2.0 diameters.

Abdominal postcoxal lines complete and moderately recurved, reaching 4/5 length of ventrite 1 ( Fig. 11g ), area enclosed by the lines finely and sparsely punctate, irregularly distributed, broadly smooth along the lines; ventrite 1 with coarse and sparse punctures at middle, uniformly distributed.

Male genitalia. Penis stout, base of penis strongly broadened, basal half to proximal part swollen with membranous appendage, apex slightly curved inward, narrowing to apex in lateral view ( Fig. 11h ); tegmen with penis guide widest at base, subtriangular in inner view ( Fig. 11j ), slightly shorter than 1/2 length of parameres; parameres stout and oval with several setae at apex and inner side in lateral view ( Fig. 11i ).

Material examined. CHINA: Yunnan: 2♂, Longmen , Shangyong, Mengla, Jinghong, 1. V. 2008. Wang XM et al. leg . 4♂ 5♀, Longmen, Mengla , ca 1027 m, 9. V. 2009, Chen XS et al. leg. 2♂, Dadugang, Xishuangbanna , ca 1050 m, 5. V. 2009, Chen XS et al. leg. 4♂ 3♀, Nanping, Mengman , Mengla, ca 745 m, 10. V. 2009, Chen XS et al. leg. 2♂, Yaoqu, Mengla , ca 700 m, 7–8. V. 2009, Chen XS et al. leg. 2♂, Caiyang River , Pu’er, 4. V. 2009, Chen XS et al. leg. 1♂, Meng’a, Menghai , ca 1170 m, 12. V. 2009, Chen XS et al. leg. 1♂, Ainiguzhai, Menglun , Jinghong, 11. V. 2009, Chen XS et al. leg. 2♂, Jiangcheng, Pu’er , ca 1150 m, 15. V. 2009, Chen XS et al. leg. 4♂ 1♀, Tongbiguan, Nabang, Yingjiang , ca 1000 m, 22–23. V. 2008, Wang XM et al. leg. 1♂ 1♀, Longtan , Ximeng, X, ca 900 m, 9–10. V. 2008, Wang XM et al. leg. 1♂, Nuozadu , Simao, 12. V. 2008, Wang XM et al. leg. 1♀, Longmen, Shangyong , Mengla, 1. V. 2008, Wang XM et al. leg. 1♂, Banlao, Cangyuan , ca 1100 m, 16. V. 2008, Wang XM et al. leg. 1♂, Xishuangbanna Botanical Garden , 22. VIII. 2005, Wang XM leg. 1♀, Mengla , Xishuangbanna, 23. VIII. 2005, Wang XM leg. 1♀, Xujiaba, Ailaoshan Mountains, Jingdong , ca 2484 m, 15. VIII. 2013, Chen XS leg. Xizang: 1♂ 1♀, Beibeng, Motuo , ca 600–768 m, 25. X. 2007 , Chen XS et al. leg. 2♀, Motuo County, ca 1200 m, 28. X. 2007 , Chen XS et al. leg. Guangxi: 1♂, Longping Mountains, Shiwandashan Mountains , 28. VII. 2005, Ren SX leg. 1♂, Shiwandashan Mountain Forest Park, 9–11. XI. 2004, Wang XM leg. 1♂, Fulongshan Mountains, Shiwanda Mountains , 7. XI. 2004, Zhang CW leg. Hainan: 1♂, Diaoluoshan Mountains , 26. VII. 2006, Wang XM leg. 1♂, Diaoluoshan Mountains , 8. V. 2005, Wang XM leg. 2♂ 1♀, Limushan Mountains , 22. VII. 2006, Peng ZQ leg. 1♂ 1♀, Liangyuan, Danzhou City , 14. IV. 1996, Peng ZQ leg. 2♂ 2♀ and 13 specimens, Bawangling, 21. III. 1996, Peng ZQ leg. 2♂, Limushan Mountains , 21. IV. 1996, Peng ZQ leg. 2♂, Jianfengling , 1. IV. 1996, Peng ZQ leg. 2♀, Tianchi, Jianfengling , IX. 1995, Peng ZQ leg. 2♂ 1♀, Wufenchang, Limushan Mountains , IX. 1995, Peng ZQ leg. 1♀, Chenxing Farm , Tunchang County, 20. III. 1996, Peng ZQ leg. Guangdong: 1♂, Nankun Mountains, Huizhou , 21. X. 2004, Wang XM leg. LAOS: 11♂ 12♀, Khammouane T nang end, 21. XII. 2005, Telakang leg. 1♂ 1♀, Heu Gnommolat , ca 380 m, 25. V. 2007, Wang XM et al. leg. 1♂, Lak Xao , ca 500 m, 27. V. 2007, Wang XM et al. leg. 2♂, Udom Xai , ca 1210 m, 16–17. VI. 2007, Wang XM et al. leg. 1♂, Namha NBCA , Luang Namtha, ca 680 m, 18–21. VI. 2007, Wang XM et al. leg. 1♂, Nam Phao , Bolikhamxai, ca 700 m, 26. V. 2007, Wang XM et al. leg.

Distribution. China (Yunnan, Xizang, Guangxi, Hainan, Guangdong); Laos; Vietnam.

Remarks. This species is recorded from China and Laos for the first time.

Figures

FIGURE 11. Axinoscymnus macrosiphonatus Hoàng, 1979: a, d dorsal view b, e lateral view c, f frontal view g abdomen h penis i tegmen, lateral view j tegmen, inner view. Scale bars: a–f: 0.5 mm, g: 0.2 mm, h–j: 0.05 mm.