Axinoscymnus cardilobus Ren et Pang, 1992

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 : 435-436

Axinoscymnus cardilobus Ren et Pang, 1992

( Figs 2a–k )

Axinoscymnus cardilobus Ren et Pang, 1992: 20 .— Pang et al. 2004: 90, Ren et al. 2009: 54.

Diagnosis. This species is similar to A. apioides Kuznetsov et Ren in external appearance, but can be distinguished from the latter by the pointed apex of penis ( Fig. 2i ) and its penis guide longer than 1/2 length of parameres ( Fig. 2j ).

Description. TL: 1.51–1.62 mm, TW: 1.03–1.11 mm, TH: 0.78–0.81 mm, TL/TW: 1.45–1.47, EL/EW: 1.10– 1.13, PL/PW: 0.52–0.54, HW/PW: 0.67–0.68, PW/EW: 0.68–0.72.

Body oval, weekly convex, dorsum with white pubescence ( Figs 2a–c ). Head, antennae and mouthparts pale yellow ( Fig. 2c ), tip of mandibles brown. Pronotum and scutellar shield pale yellow. Elytra pale yellow ( Figs 2a–c ). Underside pale yellow, with yellow mesoventrite, metaventrite and elytral epipleurae. Legs pale yellow.

Head with fine frontal punctures, as large as eye facets, 1.0–1.5 diameters apart. Eyes densely faceted, interocular distance about 0.33 times of head width ( Fig. 2c ). Pronotal punctures slightly larger than those on frons, 1.0–2.0 diameters apart. Surface of elytra with punctures much larger than those on pronotum, separated by 1.0–2.5 diameters.

Abdominal postcoxal lines complete and moderately recurved, reaching 3/4 length of ventrite 1 ( Fig. 2h ), 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 short and slender, distinctly broadened at base, apex pointed ( Fig. 2i ); tegmen with penis guide subtrapezoidal, parallel in basal 1/4, then gradually tapering to apex in inner view ( Fig. 2k ); shorter than parameres in lateral view; parameres stout and elongate oval with few setae in lateral view ( Fig. 2j ).

Material examined. Holotype: male, Dinghushan , Guangdong, 17. V. 1989, Ren SX leg ( SCAU, Fig. 2g ) . Paratypes: 1♀, with same data as holotype . 1♂ 3♀, Dinghushan, Guangdong, 1978, Pang XF leg ( SCAU) .

Other material. CHINA: Hainan: 1♂, Wufenchang, Limushan Mountains , 26. VI. 1995, Peng ZQ leg. 1♀, Diaoluoshan Mountains , 7. V. 2005, Wang XM leg. 1♀, Diaoluoshan Mountains , 26. VII. 2006, Lu HR leg. 1♂ 2♀, Bawangling , 21. III. 1996, Peng ZQ leg. 1♂ 1♀, Longlou , Wenchang County, 4. V. 1995, Peng ZQ leg. 1♂, Liangyuan, Danzhou City , 14. IV. 1996, Peng ZQ leg. 3♀, Wuzhishan Mountains , 3. V. 1996, Peng ZQ leg. 1♀, Tianchi, Jianfengling , V. 1995, Peng ZQ leg. Guangxi: 1♂, Hongqi Forest Farm, Shiwandashan Mountains , 9. XI. 2004, Wang XM leg. 1♀, Hongqi Forest Farm, Shiwandashan Mountains , 10. XI. 2004, Tan ZQ leg. 2♀, Hongqi Forest Farm, Shiwandashan Mountains , 28. VII. 2005 . Yunnan: 1♂, Longmen, Mengla , ca 1027 m, 9. V. 2009, Chen XS et al. leg. 1♀, Funing , 15. VIII. 2005, Wang XM leg. 1♀, Mengla Farm , 22. X. 2002, Peng ZQ leg. 1♀, Ganlanba, Xishuangbanna , 20. IV. 2002, Peng ZQ leg. 1♀, Menghan, Jinghong , 24. VIII. 2005, Wang XM leg. Guangdong: 1♂, Nankun Mountains , 21. X. 2004, Telakang leg. 1♀, Yangqiu Mountain, Shimentai , 6. X. 2004, Wang XM leg. 1♀, Huangdong, Shimentai , 30. X. 2004, Wang XM leg. 2♂ 1♀ and 1 specimen, Campus of South China Agricultural University, Tianhe, Guangzhou , 14. IV. 2009, Chen XS leg. LAOS: 1♂ 1♀, Lax Xao , ca 500 m, 27. V. 2007, Wang XM et al. leg. 1♂ 2♀, Heu Gnommolat , ca 380 m, 25. V. 2007, Wang XM et al. leg. 1♂, 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♂ 1♀, Khammouane T nang end, 21. XII. 2005, Telakang leg. 1♂, Collecting information unknown .

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

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

Figures

FIGURE 2. Axinoscymnus cardilobus Ren et Pang, 1992: d–f holotype a, d dorsal view b, e lateral view c, f frontal view g labels of holotype h abdomen i penis j tegmen, lateral view k tegmen, inner view. Scale bars: a–f: 0.5 mm, h: 0.2 mm, i–k: 0.05 mm.