Hermaeophaga korotyaevi Konstantinov

Lopatin, I. K. & Konstantinov, A. S., 2009, New genera and species of leaf beetles (Coleoptera: Chrysomelidae) from China and South Korea, Zootaxa 2083 (1), pp. 1-18 : 16-17

Hermaeophaga korotyaevi Konstantinov , new species

( Figs 45–47 )

Holotype, male. South Korea, GN Prov., Mt Juri Sancheong City , Sicheonmyeon, Sincheonri, 17.V.2000 leg. B. Korotyaev ( ZMAS)

Body length 1.72 mm, width 1.08 mm. Head and pronotum black with light bronzish tint, as dark as elytra. Antennomeres one, two, and three yellowish, much lighter than rest. Pro- and mesotibiae somewhat darkened, nearly as dark as pro- and mesofemora.

Head ( Fig. 45 ) slightly convex in lateral view (frons and vertex form slightly convex line in lateral view). Vertex shiny, without punctures or wrinkles in middle. Supracallinal sulci absent, but head surface bends from antennal calli to vertex thus separating antennal calli from it. Midfrontal sulcus present, well visible only at base. Orbital and supraorbital sulci deep and relatively wide, being most noticeable sulci on head. Suprafrontal sulcus deep. Frontal ridge narrows between antennal calli also narrowing ventrally forming denticle at anterofrontal ridge ( Fig. 45 ). Antennomere two slightly longer than three or four separately.

Pronotum slightly swollen anterolaterally, with anterolateral callosity forming acute denticle. Antebasal transverse impression deep in middle, as deep as laterally. Disc with small dense and sharp punctures. Procoxal cavities widely open. Intercoxal prosternal process extends posteriorly beyond coxae.

Elytron with well developed humeral callus, widest nearly at middle. Punctures confused, distance between them varies significantly. Larger punctures form irregular striae with smaller punctures placed in between. Elytral slopes nearly vertical at basal one third.

Median lobe of aedeagus ( Figs 46, 47 ) slightly narrowing apically, not constricted before apex in ventral view, nearly straight in lateral view with apex strongly bent dorsally. Apex rounded, lacking defined denticle in ventral view. Apical part of longitudinal impression narrows gradually.

Comments: Hermaeophaga korotyaevi can be separated from all other Eurasian species of the genus with the help of the following key, where it is in the vicinity of H. mercurialis F. and H. cicatrix Illiger. It can be separated from both of them by the frontal ridge dorsally as narrow as ventrally, forming denticle above clypeus and the third antennomere shorter than the second. Hermaeophaga korotyaevi is also similar to H. dali and can be separated from it by the following characters: the basal antennomeres and the tarsi are much lighter than in H. dali ; the apex of the median lobe of the aedeagus is narrowly rounded (it is flat in H. dali ); border that limits ventral longitudinal impression broadly rounded, almost flat (it is triangular in H. dali ).

Etymology: This species is named after B. A. Korotyaev who collected it.

Figures

FIGURES 45–47. Hermaeophaga korotyaevi. 45, head, frontal view; 46, median lobe of aedeagus, ventral view; 47, median lobe of aedeagus, lateral view.