Colon Herbst
Creators: name: Park, Sun- Jae
name: Hoshina, Hideto
name: Ahn, Kee- Jeong
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Leiodidae
Colon

description: 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.
description: Published as part of Park, Sun- Jae, Hoshina, Hideto & Ahn, Kee- Jeong, 2005, Descriptions Of Two New Species Of The Genus Colon Herbst (Coleoptera: Leiodidae: Coloninae) From Korea And Japan, pp. 407-413 in The Coleopterists Bulletin 59 (4) on page 408, DOI: 10.1649/787.1, http://zenodo.org/record/4924206