Amphimenes gracilis 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 : 27

Amphimenes gracilis Fedorenko sp. n. Figs 7213039

Description.

Almost identical to the previous species, except for as follows. Body, on average, smaller, 6.4 –7.5/6.2– 7.3 mm long, 2.6-3.0 mm wide. Legs and antennae paler, reddish-yellow. Cross-striated sculpture denser and coarser, especially so at elytral base. Pronotum narrower, 1.29-1.42 (mean 1.37) times as wide as long, 1.35-1.50 (mean 1.40) times as wide as head. Elytra 1.40-1.50 (mean 1.45) times as long as wide, 1.56-1.72 (mean 1.66) times as wide as pronotum. Elytral striae deeper, inner four intervals more or less convex behind the middle; disc without wide and shallow depression between D2 and stria 6. Metepisternum shorter, 1.35-1.43 times as long as wide.

Penis (Figs 21, 30, 39) similar to those of Amphimenes bidoupensis and especially Amphimenes montanus both in shape and structure, but a little more robust, with apical lamella much shorter, as well as dorsolateral carina longer and much stronger, especially so basally where it forms a prominent knob.

Material.

Holotype ♂ (ZISP) labelled: "N Vietnam 40 km / NE of Thai Nguen 20 XII 1962 / leg. O N Kabakov" [handwritten] “HOLOTYPE/…” [red typewritten]. Paratypes (ZISP, SIEE), ♀, same data but 20 XI 1962 [handwritten]; ♂, 3 ♀♀, mountains 50 km / NE of Thai Nguen 300 m [a s l] / 8.2., 10.3.1963 and 16.12.1962 / Kabakov [handwritten micrographs in Russian]; ♂, ♀, [Nghe An Prov.], mountains SW [of] / Quỳ Châu 200 m [a s l] / 11.1. and 15.2.1963 Kabakov [handwritten micrographs in Russian]; ♂, S [of] Quỳ Châu ~300 m [a s l] 17.7.1963 / Kabakov [handwritten in Russian].

Type locality:

North Vietnam, 40 km NE of Thai Nguen.

Geographic distribution.

Known only from the above two localities. Occurring at lower altitudes (~200-500 m a s l.) than do Amphimenes bidoupensis or Amphimenes montanus , also probably being allopatric with both.