A taxonomic study of the genus Agathidium (Coleoptera: Leiodidae) from Korea, Part I

Abstract

A taxonomic study of the genus Agathidium (Coleoptera: Leiodidae) from Korea, Part I. -A taxonomic study of the genus Agathidium from Korea is presented. Nine species including five new species {Agathidium mwyeongi sp. n., A. bockshini sp. n., A. leesunshini sp. n., A. odaesanense sp. n., and A. choi sp. n.) are recognized, two of which are reported as new to Korea {Agathidium cribratum Poitevin and A. multitodum Hoshina). A key for the Korean species of the two subgenera, Cyphoceble and Neoceble, of the genus Agathidium and illustrations of diagnostic features are provided.

Phylogeny of the Agathidiini Westwood (Coleoptera: Leiodidae) and implications for classification and contractile morphology

“… Head shape (behind eyes) : 0. weakly narrowed; 1. gradually narrowed; 2. sharply narrowed. Head width : 0. widest at eye level; 1. widest behind eyes. Compound eyes : 0. not projecting; 1. weakly projecting; 2. strongly projecting. Postocular temporum : 0. absent; 1. shorter than half of eye (see Hoshina et al , , figs 28–29); 2. longer than half of eye (see Hoshina et al , , figs 22–24). Supraocular carina : 0. absent; 1. present. Number of antennomeres ; 0. ten; 1. eleven. Number of antennomeres in club : 0. three; 1. four; 2. five. Harmann's organ in antennomere 7 (if with ten antennomeres, antennomere 6) : 0. absent; 1. present. Harmann's organ in antennomere 9 (if with ten antennomeres, antennomere 8) : 0. absent; 1. present (see Wheeler & Miller, , fig. 14). Harmann's organ in antennomere 10 (if with ten antennomeres, antennomere 9) : 0. absent; 1. present (see Wheeler & Miller, , fig.…”

“…14). Harmann's organ in antennomere 10 (if with ten antennomeres, antennomere 9) : 0. absent; 1. present (see Wheeler & Miller, , fig. 14). Antennomere 2 length : 0. shorter than a3; 1. as long as a3; 2. longer than a3. Antennomeres 7–10 (if with ten antennomeres, antennomere 6–9) : 0. almost symmetrical; 1. asymmetrical. Antennomere 8 (if with ten antennomeres, antennomere 7) : 0. larger than a7; 1. as large as a7; 2. larger than half of a7; 3. as large as half of a7; 4. smaller than half of a7. Antennomere 11 (if with ten antennomeres, antennomere 10) : 0. narrower than preceding one; 1. as wide as preceding one; 2. wider than preceding one. Apical shape of antennomere 11 (if with ten antennomeres, antennomere 10) : 0. gradually tapered (see Hoshina et al , , fig. 37); 1. abruptly tapered (see Park & Ahn, , fig.…”

“… Rows of punctures on elytra : 0. absent; 1. six; 2. nine. Sutural stria on elytra : 0. absent (see Park et al , , fig. 1); 1. present (see Hoshina et al , , figs 9–11). Elytra with humeri : 0. strongly angled (Fig. A); 1. broadly angled (Fig.…”