Aulacophora nigripennis Motschulsky, 1857

(Figs 77–79, 91–99)

Aulacophora nigripennis Motschulsky, 1857: 38; Baly, 1886: 5 (China, Japan); Schönfeldt, 1890: 174 (Japan: Ryukyus); Chûjô, 1935a: 83 (Taiwan, China: Heilongjian); Ogloblin, 1936: 156 (Russia); Chen & Kung, 1959: 375 (China: Hebei, Shaanxi, Shandong, Jiangsu, Zhejiang, Fujian, Jiangxi, Sichuan); Chûjô, 1962: 91 (Taiwan); Gressitt & Kimoto, 1963: 489 (China: Hainan); Lee & An, 2001: 130 (South Korea); Aston, 2009: 14 (China: Hong Kong). Ceratia (Orthaulaca) nigripennis: Weise, 1922: 62 .

Ceratia nigripennis: Miwa, 1931: 189 (Taiwan) .

Type material. Holotype ♂ (ZMUM), labeled: “ Aulacophora / nigripennis / Motsch / Japonia [y, h] // Holotypus [r, p]”. This specimen was in bad condition. The head and thorax was lost. Only elytra, hind legs, and abdomen were attached to the pin.

Other specimens examined. CHINA. Fujian: 1♀, Houchai, 27.VI.2014, leg. Y.-T. Chung (TARI); 1♀, Shawu, Tachufung, 1–3.VI.1943, leg. T. C. Maa (BPBM); 1♀, same locality, 4–9.VI.1943, let. T. C. Maa (BPBM); Hong Kong: 1♂, Lantau, Tong Chung, 31.V.2008, leg. P. Aston (PAHC); Hubei: 1♂, Lichuan, Hsiaoho, 9.VIII.1948, leg. Gressitt & Djou (BPBM); 1♂, same locality, 11.VIII.1948, leg. Gressitt & Djou (BPBM); Sichuan: 1♂, Yachow to Mupin, 23–27.VI.1929, leg. D. C. Graham (BPBM); JAPAN. Aomori: 1♂, Fukaura, 11– 13.VI.1999, leg. M. Hayashi (JBCB); TAIWAN. Hualien: 1♀, Huitouwan, 10.VII. 207, leg. C.-F. Lee (TARI); 1♀, Juisui, 27.VI.2013, leg. Y.-T. Chung (TARI); Kaoshiung: 1♀, Maolin, 6.VII.2011, leg. M.-H. Tsou (TARI); 1♂, 1♀, Meinung, 14.XII.2012, leg. J.-C. Chen (TARI); 1♂, 28.XII.2012, leg. J.-C. Chen (TARI); 1♂, Takangshan, 9.IV.2013, leg. B.-X. Guo (TARI); Miaoli: 1♂, Tunglo, 25.III.2008, leg. H.-T. Shih (TARI); Pingtung: 1♂, Lilungshan, 2.III.2012, leg. J.-C. Chen (TARI); 1♂, same locality, 24.III.2014, leg. Y.-T. Chung (TARI); 1♂, same locality, 26.V.2014, leg. Y.-T. Chung (TARI); 1♂, 1♀, Mutan, 27.VII.2011, leg. J.-C. Chen (TARI); 1♀, Nanjenshan, 27.III–5.IV.2010, leg. M.-L. Jeng (TARI); 1♂, Peitawushan, 19.II.2014, leg. Y.-T. Chung (TARI); 1♀, Shouka, 25.II.2009, leg. C.-F. Lee (TARI); 1♀, same locality, 5.VI.2012, leg. Y.-T. Chung (TARI); 1♀, same locality, 28.II.2013, leg. B.-X. Guo (TARI); 1♂, 1♀, Tahanshan, 26.III.2013, leg. C.-F. Lee (TARI); 1♀, same locality, 25.V.2013, leg. Y.-T. Chung (TARI); 1♂, Taiwu, 27.III.2014, leg. Y.-T. Chung (TARI); 1♂, 2♀, Wutan, 5.VIII.2014, leg. Y.-T. Chung (RBCN); Tainan: 1♀, Meiling, 12.III.2011, leg. M.-L. Jeng (TARI); 1♂, same locality, 7.VI.2013, leg. B.-X. Guo (TARI); 1♀, same locality, 22.VI.2013, leg. W.-C. Liao (TARI); 1♀, Pichien trail, 22.III.2010, leg. U. Ong (TARI); Taipei: 1♀, Chinshan, 9.V.2008, leg. W.-T. Liu (TARI); 1♂, Chungchengshan, 17.II.2012, leg. S.-F. Yu (TARI); 2♀, Chuwei, 2006, leg. H.-T. Cheng (TARI); 1♂, Erhkoshan, 26.XI.2006, leg. M.-H. Tsou (TARI); 1♂, Fengkueitsui, 29.VI.2007, leg. S.-F. Yu (TARI); 1♀, Guandu, 27.IV.2009, leg. H.-T. Cheng (TARI); 1♀, Kungliao, 24.IX.2009, leg. H. Lee (TARI); 2♂, 1♀, Taipei City Zoo, 13.XI.2006, leg. H.-T. Cheng (TARI); 1♀, Tatungshan, 3.IV.2008, leg. S.-F. Yu (TARI); 2♂, Tienhsiyuan, 15.IV.2011, leg. H. Lee (TARI); 1♂, 1♀, Wulai, 21.X.2006, leg. S.-F. Yu (TARI); 2♀, same locality, 26.V.2009, leg. C.-F. Lee (TARI); 1♀, same locality, 15.VIII.2010, leg. S.-P. Kao (TARI); Taitung: 1♀, Liyuan, 19.VI.2013, leg. C.-F. Lee (TARI); 2♂, 2♀, Motien, 5.X.2010, leg. C.-F. Lee (MNHUB); Taoyuan: 1♀, Houtzuhu, 6.IX.2011, leg. S.-F. Yu (TARI); 1♂, Hsiaowulai, 18.X.1007, leg. S.-F. Yu (TARI); 1♂, 1♀, same locality, 19.IV.2008, leg. S.- F. Yu (RBCN); 1♀, same locality, 19.IV.2008, leg. M.-H. Tsou (TARI); 1♀, Kaoi, 19.VI.2010, leg. H.-J. Chen (TARI); 1♀, Tungyanshan, 15.V.2010, leg. H. Lee (TARI).

Diagnosis. Aulacophora nigripennis is similar to A. frontalis, A. lewisii, A. opacipennis, and A. palliata with the black elytron but easily recognized by its black meso- and metathoracic ventrites and legs.

Males. Length 6.0– 6.8 mm, width 3.3–3.9 mm. General color (Figs 77–78) black and shining except head, prothorax, scutellum, and abdomen yellowish brown, antenna dark brown but three basal antennomeres paled. Antenna (Fig. 91) filiform, antennomere I not enlarged; II apically enlarged ratio of length of antennomeres III to XI about 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 1.0: 0.9: 1.1; ratio of length to width from antennomere III to XI about 2.6: 2.9: 2.9: 3.1: 3.2: 3.3: 3.6: 3.3: 4.1. Apex of abdominal tergite VIII forming shallow notch (Fig. 97), weakly convex at middle; with several setae scattered on apical margin; base weakly sclerotized. Median lobe of abdominal ventrite V long and rectangular, with longitudinal ridge along lateral margin. Penis (Figs 93–94) wide, widest at apical 1/3, abruptly narrowed near apex, apex narrowly rounded; almost straight in lateral view, apex curved and apical margin truncate; tectum absent; endophallus with scattered stout setae, and with one longitudinal sclerite, apex curved and rounded, basally widened.

Females. Length 6.2–7.1 mm, width 3.5–4.2 mm. Similar to male (Fig. 79), but antennomeres II not enlarged (Fig. 92), III–V slender; ratio of length of antennomeres III to XI about 1.0: 1.2: 1.2: 1.2: 1.2: 1.2: 1.2: 1.0: 1.3; ratio of length to width from antennomere III to XI about 3.1: 3.8: 4.2: 4.0: 4.0: 4.1: 4.3: 3.6: 5.1. Apical margin of abdominal ventrite V (Fig. 96) emarginate, convex and acute at middle. Gonocoxae (Fig. 95) wide, apex of each gonocoxa with seven or eight setae from apical 1/6 to apex; gonocoxae connected at middle, base slender. Ventrite VIII (Fig. 98) weakly sclerotized; apex narrow, apical margin a little emarginate at middle, surface with extremely dense short setae along apical margin, some short setae scatter near apex; spiculum short. Spermathecal receptaculum (Fig. 99) a little swollen, hardly separated from pump; pump strongly curved; spermathecal duct short, stout, shallowly projecting into receptaculum.

Host plants. Cucurbitaceae: Trichosanthes cucumeroides (Ser.) Maxim. ex Fr. & Sav., Lagenaria siceraria (Mol.) Standl.; Fabaceae: Callerya reticulata (Benth.) Schot.

Distribution. China, Japan, South Korea, Taiwan.