Descriptions Of Two New Species Of The Genus Colon Herbst (Coleoptera: Leiodidae: Coloninae) From Korea And Japan Author Park, Sun- Jae Department of Biology Chungnam National University Daejeon 305 - 764, REPUBLIC OF KOREA Author Hoshina, Hideto Department of Regional Environment Faculty of Education and Regional Studies Fukui University, Fukui Prefecture, 910 - 8507, JAPAN Author Ahn, Kee- Jeong Department of Biology Chungnam National University Daejeon 305 - 764, REPUBLIC OF KOREA text The Coleopterists Bulletin 2005 2005-12-01 59 4 407 413 journal article 305128 10.1649/787.1 f1364e63-4ff7-46c4-84b1-7a8652ed6d71 1938-4394 4924206 Key to Species of the Genus Colon in Korea and Japan 1. Metafemur not showing sexual dimorphism [male metafemur little wider than female (Fig. 11)] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Colon ( Myloechus ) koreanus n. sp. 1'. Metafemur showing sexual dimorphism [male metafemur bearing a projection (Fig. 12), or triangular and sharply expanded posteriorly] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2 2. Body length less than 2.5 mm [ C. ( M. ) appendiculatum Sahlberg sometimes less than 2.5 mm ] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3 2'. Body length longer than 2.5 mm [ C. ( M. ) appendiculatum usually more than 3.0 mm] - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5 3. Dorsum usually brown or dark brown, but rarely a little reddish; projection of male metafemur with more than five thick setae at apex - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) appendiculatum Sahlberg 3'. Dorsum a little reddish; projection of male metafemur without thick apical setae --------------------------------------------------------------------------------------------------------------- 4 4. Pronotum relatively strongly punctate; male metafemur strongly rounded - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) kishii Nakane 4'. Pronotum moderately punctate; male metafemur weakly triangular - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) japonicum Hisamatsu 5. Pronotum relatively sharply curved along lateral margins; pronotum at widest point about 2.5–2.7 times as wide as apical margin - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6 5'. Pronotum moderately curved along lateral margins; pronotum at widest point about 2.2 times as wide as apical margin - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8 6. Body less than 3.0 mm; male metafemur with a slender projection markedly and posteriorly extended at apical 1/4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) itoi Hisamatsu 6'. Body longer than 2.0 mm; male metafemur without long projections - - - - - - - - - - - - - - 7 7. Body length 3.2–3.6 mm ; male metafemur triangularly expanded at hind corners - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) babai Nakane 7'. Body length 4.0 mm; male metafemur with a small projection about at apical 1/4 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) hiraii Nakane 8. Projection of male metafemur with more than five thick setae at apex - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) appendiculatum Sahlberg 8'. Projection without apical setae - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9 9. Body length 4.0 mm; male metafemur triangularly expanded at hind corner and not bearing long projections; distributed in Ryukyus (Japanese Oriental region) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) tametomoi Hoshina 9'. Body length 2.8–3.2 mm ; male metafemur with a slender and striking projection at about apical 1/5 of hind margin; distributed in Korea and Japan (Palaearctic region) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - C. ( M. ) shini n. sp.