Amphimenes maculatus Fedorenko

Fedorenko, Dmitry N., 2010, New or little-known species of the genus Amphimenes Bates, 1873 (Coleoptera, Carabidae, Lebiinae) from Vietnam, ZooKeys 65, pp. 17-50 : 24-25

Amphimenes maculatus Fedorenko sp. n. Figs 5182736

Description.

Very similar to the preceding species, except as follows: Body smaller, 5.6 –5.9/5.3– 5.7 mm long, 2.3-2.5 mm wide. Paler side margin of pronotum broader, slightly entering pronotal disc. Underside, on average, darker, with gula same coloured as lateral parts of head; anterior paler spot on elytron about 1/2 spot length distant from base, always surpassing midway between D1 and D2, often reaching or almost reaching D2 level, mostly not extending outwards beyond stria 7; posterior spots usually somewhat angulate, starting midway between D2 and D3, widely adjoining along the suture.

3rd antennomere 1.56-1.70 (mean 1.62) times as long as 2nd, 8th 2.09-2.39 (mean 2.21) times as long as wide. Pronotum 1.53-1.63 (mean 1.57) times as wide as long, 1.43-1.49 (mean 1.46) times as wide as head, more convex, especially so posteriorly; basal border obsolete medially; mid-line deeper, much so basad, adjoining transverse basal depression, latter conspicuously separated from disc convexity. Reflexed side margin adjoining disc convexity directly. Elytra 1.32-1.42 (mean 1.35) times as long as wide, 1.49-1.54 (mean 1.52) times as wide as pronotum, with base straight and transverse, as well as apices contiguous and transversely truncated at tip. Elytral striae a little deeper, resulting in intervals more convex basally and towards side margin, these 2 to 4 distinctly broader than 5 to 8 at and slightly behind the middle. Cross-striation, especially in basal 1/2 elytra, less regular, being in part transformed into deep transverse punctures. D1/EL=0.13-0.16 (mean 0.15), D2/EL=0.43-0.51 (mean 0.47), D3/EL=0.90-0.97 (mean 0.92). Metepisternum 1.47-1.55 times as long as wide.

Male profemur without ventral tubercle.

Penis (Figs 18, 27, 36) with a very coarse microsculpture and left margin in dorsal view sinuate behind basal third. Apical orifice rounded but for a distinctly sclerotized dorsolateral projection (lobe), latter being much smaller and less strongly sclerotized than in Amphimenes rugulipennis . Apical lamella rather large, strongly bent upwards and entirely occupied by a membranous window on right dorsal side.

Material.

Holotype ♂ (ZMMU) labelled: "S[outh] Vietnam, N[orthermost part of] Dongnai Pr[ovince]. / Nam Cat Tien Nat[ional]. Park / Exped[ition]. [of the] Russ.-Vietnamese / Tropical Centre / 22-23.X.2004 / leg. D. Fedorenko" [typewritten] "HOLOTYPE / …” [red typewritten]. Paratypes (SIEE), ♂, 4♀♀, same data but 21-22. or 28-29.XI.2004, or 18.VI.2005.

Type locality:

South Vietnam, Dongnai Province, Nam Cat Tien National Park.

Geographic distribution.

Known from type locality only.