Amphimenes gracilis Fedorenko 2010

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.

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.

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 A. bidoupensis and especially A. 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.

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