A new species of the genus Blaiseus Fleutiaux (Coleoptera: Elateridae, Cardiophorinae) from Hainan, China Author Qiu, L. Author Douglas, H. text Far Eastern Entomologist 2017 2017-10-03 343 343 1 8 http://dx.doi.org/10.25221/fee.343.1 journal article 10.25221/fee.343.1 2713-2196 7163573 Blaiseus hainanensis Qiu et Douglas , sp. n. Figs. 1, 2 , 4–27 MATERIAL EXAMINED. Holotype – male, China : Hainan : Mingfenggu , Mt. Jianfengling, Ledong County, 990–1000m , 24.IV 2015 , leg. Lu Qiu. Paratype : 1 male, same data as the holotype. DIAGNOSIS. This species has similar male genitalia to Blaiseus daklakensis Douglas but can be easily distinguished by the following characteristics: 1) body dark brown, with yellow-brown antennae and legs, elytra with elongate yellowbrown patches ( Figs 1, 2 ), while B. daklakensis has body pale red-brown, with pale legs and abdomen, elytral colour uniform ( Fig. 3 ); 2) punctures on pronotal disk separated by less than their diameter ( Fig. 12 ); separated by more than their diameter in B. daklakensis ; 3) antennae reaching beyond metacoxae, while antennae only reaching metacoxae in B. daklakensis ; 4) dorsal apex of parameres with shallow pits ( Fig. 27 , arrows), while dorsal apex protruded in H. daklakensis ( Figs 28, 29 , arrow). Figs 1–3. Habitus of Blaiseus spp. 1 , 2 – B. hainanensis sp. n. , male holotype: 1 – dorsal view; 2 – ventral view; 3 – B. daklakensis , male holotype , dorsal view (kept in Bernice P. Bishop Museum, Honolulu, Hawaii , U.S.A. ). DESCRIPTION. Male. Body length 7.8–8.1 mm , elytra length 5.7–5.8 mm , pronotum length 1.7–1.8 mm , pronotum width 2.0– 2.2 mm , antenna length 6.0–6.1 mm. Body with yellow-brown pubescence, elytra with weak metallic reflection, dark brown with elongate yellow stripes at humeri, along suture and the 6th interval on apical half; head, thorax and abdomen dark brown, antennae and legs yellow-brown ( Figs 1, 2 ). Head sparsely pubescent ( Figs 4, 6 ), densely covered with large punctures, midanterior surface slightly depressed ( Fig. 11 ). Antennae ( Fig. 17 ) exceeding metacoxae by length of antennomere 11 ( Figs 1, 2 ); labrum small ( Fig. 7 ), flat in lateral profile, nasale with round pits antero-mesad of antennal fossae. Prothorax: pronotum sparsely with pubescence except mid-anterior area ( Figs 6 , 15 ), punctures on pronotal disk separated by less than their diameter ( Fig. 12 ). Posterior edge of pronotum with 2 apices mesally; hypomeron with hind edge sinuate immediately meso-ventrad of hind angles ( Figs 5, 8 ). Prosternum with ventral surface of prosternal process surface not carinate laterally ( Fig. 9 , arrow). Figs 4–14. Male Blaiseus hainanensis sp. n. 4 – head, dorsal view; 5 – head and prothorax, ventral view; 6 – head and pronotum, anterolateral view; 7 – head, anterior view; 8 – prothorax, lateral view; 9 – prosternal process (arrow), ventral view; 10 – metacoxal plate (outlined); 11 – punctures of frons; 12 – punctures on pronotal disc; 13 – punctures of elytral disk; 14 – side of elytron. Pterothorax: scutellar shield with posterior apex pointed ( Fig. 16 ). Elytra not upturned at apex; punctures unequal-sized, round or elongate ( Fig. 13 ); interval 5 costate on apical third; epipleurae irregularly serrate ( Fig. 14 ). Hind wings with 4 Figs 15–20. Male Blaiseus hainanensis sp. n. 15 – pronotum; 16 – scutellar shield; 17 – antennomeres 3 to 11; 18 – protibia and tarsus; 19 – mesotibia and tarsus; 20 – metatibia and tarsus. ( Figs 18, 19, 20 under the same scale). Figs 21–24. Male Blaiseus hainanensis sp. n. 21 – tergite VIII, dorsal view; 22 – ventrite VIII, ventral view; 23 – ventrite and tergite IX, ventral view; 24 – tergite and ventrite IX, dorsal view. Legs ( Figs. 18–20 ): femora and tibiae expanded (fossorial); protibiae with posterior tooth at apex but not at midlength; tarsomere 4 weakly lobed; metacoxa sudden narrowed at basal third ( Fig. 10 ). Figs 25–29. Male genitalia of Blaiseus spp. 25–27. B. hainanensis sp. n. , holotype: 25 – ventral view; 26 – dorsal view; 27 – close-up, ventral view; 28, 29 – B. daklakensis : 28 – original figure in Douglas (2009) , from the paratype , dorsal view; 29 – holotype , dorsal view. ( Figs 25, 26, 28 under the same scale, 29 not to scale). Abdomen: abdominal segment 8 with tergite normal ( Fig. 21 ), and ventrite non- lobed ( Fig. 22 ); segment 9 with tergite and ventrite fused anterad, ventrite with apex round, tergite well sclerited laterally ( Figs 23, 24 ). Male genitalia ( Figs 25–27 ): median lobe broadest near apex, apex slightly protruded, sides concave throughout basal 3/4 of free portion; parameres with ventral apices slightly shorter than dorsal (setose) lobes; inner parameres sclerotized; apex of dorsal lobes with shallow pits ( Fig. 27 , arrows). Female unknown. DISTRIBUTION. China : Hainan ( Fig. 31 ). NATURAL HISTORY. Specimens were observed lying on leaves of shrubs at night in the rainforest of Mt. Jianfengling ( Fig. 30 ). ETYMOLOGY. The species epithet derives from the type locality Hainan Island , in China . Figs 30–31. Type locality of Blaiseus hainanensis sp. n. 30 – Mt. Jianfengling forest; 31 – map of Hainan Island (red circle indicates the type locality of the new species) .