Copelatus sociennus J. Balfour-Browne, 1952

Copelatus sociennus J. Balfour-Browne, 1952 View in CoL

( Figs 21 View FIGURES 21–24 , 59–60 View FIGURES 51–62 )

Copelatus sociennus J. Balfour-Browne View in CoL in Guignot, 1952: 26; Jäch & Easton 1998: 44 ( Macao: Friendship Monument). Copelatus bangalorensis Vazirani, 1970: 311 View in CoL ; Zeng 1989: 98 (Guangxi: Guilin, Yanshan; Shanghai; Yunnan: Xishuangbanna).

Type locality. “ China: ( Hong Kong)” .

Type material. Holotype ♂ ( BMNH), labelled: “833 [hw, round label] // Hong Kong / [on reverse:] 48 / 60 [hw] // Copelatus / discoideus Shp [hw] // Copelatus / japonicus / ♂ Sharp. / det. J.Balfour-Browne [hw, blue ink] // Copelatus ♂ / chinensis Rég. [hw] / J.Balfour-Browne det. [p] / Det. from Descr. [p] ii.1946 [hw] // HOLOTYPE ♂ / COPELATUS / sociennus / J.Balfour-Browne, 1952 / labelled by J. Hájek 2016 [p, red label]” . Paratypes: 1 ♂ ( BMNH), labelled: “Bowring / China [hw] // 457 / 17/8/49 [hw, round label] // Copelatus / japonicus / ♂ Sharp. / det. J.Balfour-Browne [hw, blue ink] // Copelatus ♂ / chinensis Rég. [hw] / J.Balfour-Browne det. [p] / Det.from Descr. [p] ii.1946 [hw]” ; 1 ♂ ( BMNH), labelled: “Bowring / China [hw] // 457 / 7/8/53 [hw, round label] // Copelatus /? chinensis Rég. [hw] / J.Balfour-Browne det. [p]” ; 1 ♀ ( BMNH), labelled: “Bowring / China [hw] // 457 / 9/6/52 [hw, round label]”. All paratypes provided with additional label “ PARATYPE ♂ [ ♀, respectively] / COPELATUS / sociennus / J.Balfour-Browne, 1952 / labelled by J. Hájek 2016 [p, red label]” .

Additional material examined. CHINA: Guangdong: 3 ♂, 3 ♀, Zhuhai, Hengqin Island , 10.vii.2006, F. Jia leg. ( SYSU) ; 4 ♀, Zhuhai, Qi’ao Island , 13.-15.vii.2005, Y. Jia leg. ( SYSU) ; 2 ♂, Zhuhai, back mountain of Sun Yat-Sen University , 5.-8.vii.2011, F. Jia leg. ( SYSU) . Guangxi: 6 ♂, 9 ♀, Jingxi, Bangliang Nature Reserve , 6.viii.2010, J. Huang leg. ( SYSU) ; 1 ♂, Shiwandashan National Forest Park, 21°54.4′N 107°54.2′E, 300 m, pool, 5.-9.iv.2013, M. Fikáček, J. Hájek & J. Růžička leg. ( NMPC) GoogleMaps ; 1 ♂, Du’an County, Sanzhiyang Township, Keli vill., 24.vi.2013, Tian, Lin, Yin, Huang leg. ( SYSU) . Hainan: 1 ♂, 3 ♀, 6 km W Dongxing , 50 m, 25.i.1996, M. Jäch leg. ( NHMW) . Macao: 1 ♂, Coloane Isl. , Siac Pai Van Agric. Park, 19.iii.1998, E. Easton leg. ( NHMW) ; 1 ♀, Cotai Ecological Zone , 5.vii.2017, F. Jia leg. ( SYSU) ; 1 ♂, Cotai Ecological Zone , 10.x.2020, F. Jia & W. Xie leg. ( SYSU) . Yunnan: 3 ♀, Xishuangbanna , xii.1985 ( SYSU) .

Diagnosis. Larger (TL: 5.2–6.1 mm), broadly oblong-oval species. Head dark brown, clypeus and anterior part of frons usually paler, reddish; pronotum dark brown, laterally broadly reddish; elytra dark brown, with broad, comblike shaped, basal orange band not reaching suture, band confluent with orange-brown lateral part of elytra usually laterally from stria 3, apical fifth of elytra orange-brown. Pronotum with short longitudinal strioles laterally. Each elytron with six complete discal striae and one submarginal stria: all striae beginning at base; stria 1 and 4 ending close to elytral apex; striae 2–3 and 5 ending subapically; stria 6 shortest, ending at apical fourth; submarginal stria long, beginning before elytral mid-length and ending at apical fourth ( Fig. 21 View FIGURES 21–24 ). Median lobe of aedeagus in lateral view sickle-shaped with apex slightly turned dorsally, near mid-length with broad spoon-like process on dorsal side and finger-like process on ventral side ( Fig. 59 View FIGURES 51–62 ). Parameres broad, ‘D’-shaped; apex short and broad; apical lobes long, club-shaped ( Fig. 60 View FIGURES 51–62 ). Female similar to male, microreticulation of dorsal side slightly more impressed.

Collection details. The single specimen from Shiwandashan ( Guangxi) was collected in a small pool of artificial stream in the resort; specimens from Hainan were found in roadside rainwater ditches and small man-made ground water pool in rubber plantation ( Jäch & Ji 1998).

Distribution. A species occurring in the Indian subcontinent (especially in the Himalayan Area), China and continental Southeast Asia. In China, it is recorded from southern and eastern part of the country ( Guangxi, Hong Kong, Macao, Shanghai, Taiwan, Yunnan). First records from Guangdong and Hainan ( Fig. 83 View FIGURE 83 ).