Limonius ignicollis Lewis, 1894

Arimoto, Kôichi & Suzuki, Wataru, 2020, First record and two new species of the genus Limonius Eschscholtz (Coleoptera Elateridae, Dendrometrinae) from Taiwan, Zootaxa 4742 (1), pp. 89-104 : 101-102

Limonius ignicollis Lewis, 1894

( Figure 9 )

Limonius ignicollis Lewis, 1894: 197 (original description; type locality: Nikko, Honshu, Japan).

Kibunea ignicollis ( Lewis, 1894) ; Ôhira, 1970: 21 (treated as belonging to Kibunea following Kishii, 1966).

Material examined. 1 female, Katsurasawa , Akita Prefecture, Honshu, Japan, 28 VII 1980, Isao Matoba leg. ; 1 male, Anabara , Minamiaizu Town, Minamiaizu District, Fukushuma Prefecture, Honshu, Japan, 15 V 1989, K. Shindô leg. ; 1 male, Maki , Chikuniotsu , Otari Village , Kitaazumi District, Nagano Prefecture, Honshu, Japan, 7 VI 1970, Y. Furihata leg. ; 1 male, Utajuku , Minami-Alps Super Forest Road, Ina City, Nagano Prefecture, Honshu, Japan, 1,670m, 14 V 2016, Hisayuki Arimoto leg. ; 1 male, Mushiki-tôge Pass , Akiôta Town, Yamagata District, Hiroshima Prefecture, Honshu, Japan, 8 V 2010, Kôichi Arimoto leg.

Diagnosis. Body surface with metallic luster; elytra interspaces between punctures smaller than puncture diameter. Body pale red tinged with green, but elytra black. Frons in profile weakly depressed apically; supra-antennal carina in dorsal view broadly rounded but weakly emarginate apically, sometimes almost transverse apically, in profile strongly prominent anteriad above clypeus. Antennae extending beyond posterior apices of pronotum by apical two antennomeres in male and by apical antennomere in female; antennomere III slightly longer than II; IV shorter than wide, longer than II–III combined, longer than V. Prothorax widening posteriad; lateral carina strongly prominent just behind anterior angles. Anterior lobe of prosternum in profile strongly inclined (at 30–44 degrees against prosternal horizontal line). Mesial edge of hypomeron carinate anterolaterad. Prosternal spine with subapical tooth; sides at ventral view roundly expanded and anteriorly strongly prominent. Scutellum 1.12–1.29 x as long as wide, strongly convex; posterior margin broadly rounded, but apex often shallowly emarginate. Mesepisternum not reaching mesocoxal cavity.

Measurements. Male (n=4). BL: 7.17–8.25, BW: 2.02–2.45, MIE: 0.82–0.87, MAE: 1.19–1.23, OI: 142–150, PL: 1.91–2.19, PML: 1.86–2.09, PW: 1.87–2.14, PI: 101–103, EL: 4.71–5.44, EW: 2.02–2.45, EI: 223–234, BI: 245–262. Female. BL: 8.30, BW: 2.46, MIE: 0.90, MAE: 1.25, OI: 140, PL: 2.22, PML: 2.13; PW: 2.20, PI: 101, EL: 5.46, EW: 2.46, EI: 222, BI: 245.

Distribution. Japan: Hokkaido, Honshu, Shikoku and Kyushu ( Irie, 1978; Kishii, 1999; Hiramatsu, 2007).

Bionomics. The examined specimens from Nagano and Hiroshima Prefectures were collected by sweeping the flowers of trees.

Figures

FIGURE 9. Limonius ignicollis Lewis, 1894. A, C–H: male; B: female. A: habitus, dorsal view; B: head and prothorax, dorsal view; C: head, dorsal view; D: basal antennomeres of right antenna; E: head and anterior half of prothorax, lateral view; F: prosternal spine and mesosternum, lateral view (arrow: scutellum strongly convex above); G: prosternal spine, ventral view (arrows: sides at ventral view anteriorly strongly prominent); H: scutellum (arrow: apex shallowly emarginate).