Gamepenthes similis (Lewis, 1894)

Arimoto, Koichi & Arimoto, Hisayuki, 2020, The genus Nipponodrasterius Kishii (Coleoptera, Elateridae, Agrypninae), a junior synonym of the genus Gamepenthes Fleutiaux (Coleoptera, Elateridae, Elaterinae), with review of the Japanese Gamepenthes species, ZooKeys 1004, pp. 109-127 : 109

Gamepenthes similis (Lewis, 1894) Figures 1C , 3E, F , 7C

Melanoxanthus similis Lewis, 1894: 182 (original description; type locality: Fukushima [Kisofukushima in Nagano Prefecture], Nikko in Tochigi Prefecture and Osaka in Osaka Prefecture, Honshu, Japan).

Gamepenthes similis (Lewis, 1894); Kishii 1959: 59 (changed generic status).

Note.

Ôhira (1970a) transferred Melanoxanthus similis to the genus Gamepenthes , although Kishii (1959) had already suggested that the species belongs to Gamepenthes .

Material examined.

1 male, Japan, Honshu, Fukushima Prefecture, 31 VII 1989, K. Shindô leg. [GS001]; 1 male, 2 females, Japan, Honshu, Kyoto Prefecture, Kyoto City, Sakyô Ward, Hirogawara-obana Town, Sasari-tôge Pass, 698 m, 35.27546°N, 135.72935°E, 1 VIII 2020, Kôichi Arimoto leg., by beating shurbs [male: GS008; females: GS009, GS010]; 1 male, Japan, Honshu, Nara Prefecture, Tenkawa Village, Tsubonouchi Forest Road, 21 VII 2008, Hisayuki Arimoto leg. [GS002]; 2 males, Japan, Honshu, Wakayama Prefecture, Tanabe City, Mt. Gomadan-zan, 18 VII 2019, Hisayuki Arimoto leg. [GS003, 004]; 1 male, 1 female, Japan, Honshu, Tottori Prefecture, Saihaku District, Daisen Town, Mt. Dai-sen, 30 VII 2016, Akihiko Watanabe leg. [male: GS005; female: GS006]; 1 female, Japan, Honshu, Hiroshima Prefecture, Hikimi-tôge Pass, 7 VIII 1983, T. Itô leg. [GS007].

Diagnosis.

Body robust (EI: 223-247, BI: 231-266). Prothorax black. Each elytron with yellow diagonal long marking basally. Antennomere II distinctly longer than wide; III longer than wide; IV robust (1.58-1.64 times longer than wide), shorter than II-III combined (0.67-0.76 times as long as II-III combined). Pronotum gradually widened posterad. Prosternal process weakly inclined dorsad (23-37°). Metacoxal plates not narrowed outwards, with outer edge wide. Apical edge of elytra rounded, without spines. Apex of parameres beyond apical-lateral hooks widely triangular (apex length 0.4 times width of parameres at expansion).

Measurements.

Male (6 spec.) BL: 4.22-4.65; BW: 1.21-1.31; MAE: 0.706-0.786; MBE: 0.487-0.576; OI: 136-145; PL: 1.11-1.25; PML: 0.924-1.07; PAW: 0.702-0.805; PW: 1.13-1.24; PI: 97.6-101; PWI: 154-165; EL: 2.84-3.21; EW: 1.21-1.31; EI: 234-247; BI: 246-266. Female (4 spec.). BL: 4.39-4.95; BW: 1.31-1.42; MAE: 0.728-0.819; MBE: 0.523-0.600; OI: 136-140; PL: 1.25-1.41; PML: 1.03-1.20; PAW: 0.736-0.832; PW: 1.20-1.37; PI: 103-105; PWI: 153-165; EL: 2.92-3.34; EW: 1.31-1.42; EI: 223-237; BI: 231-244.

Distribution.

Japan: Honshu, Shikoku, Kyushu.

Figures

Figure 1. Gamepenthes spp., male, habitus, dorsal view A G. ornatus [GO 003] B G. pictipennis [GP 010] C G. similis [GS 003] D G. versipellis [GV 006] E G. yoshidai [GY 001].

Figure 3. Gamepenthes spp. A-F right basal antennomeres G, H left metacoxal plate I, J apices of elytra A G. ornatus, male [GO 003] B G. ornatus, female [GO 009] C G. pictipennis, male [GP 010] D G. pictipennis, female [GP 011] E G. similis, male [GS 003] F G. similis, female [GS 006] G, I G. versipellis [GV 011] H G. pictipennis [GP 010] J G. pictipennis [GP 003].

Figure 7. Gamepenthes spp., male, aedeagus, ventral side A G. ornatus [GO 006] B G. pictipennis [GP 006] C G. similis [GS 008] D G. versipellis [GV 003] E G. yoshidai [GY 002].