8. Leiodes koreana Park & Ahn, 2007 Japanese name: Chôsen-ô-tamakinokomushi (Figs. 27–29, 112) Leiodes koreana Park & Ahn, 2007: 38. Type locality. Korea, Chungnam Prov., Gongju City, Banpo-myeon, Mt. Gaeryongsan Specimens examined. JAPAN: KYUSHU: 1 ♂, 1 ♀, Miyazaki Pref., Takaoka, Takafusa, 27.v.2007, K. Iwakiri leg. (FIT) (FUFJ); 1 ♀, same data as the former except for the date, 24.vi.2007; 1 ♂, 1 ♀, Saga Pref., Mt. Sefuri-san (alt. 1000m), 16.–23.vi.2010, S, Nomura et al. leg. (FIT) (FUFJ). SHIKOKU: 1 ♂, 1 ♀, Ehime Pref., Uchiko Town, Shiromawari, 9.vii.1995, E.Yamamoto leg. (FUFJ); 1♂, 2♀♀, Kagawa Pref., Ayagawa Town, Sogisho-higashi, Shôzaka, 12.–18.iv.2009, H. Fujimoto leg. (FIT) (FUFJ); 1 ♂, same data as the former except for the date, 13.–19.vi.2009; 5♂♂, 2 ♀♀, Tokushima Pref., Yamakawa Town, Okunoi, 23.–29.vi.2003, K. Tanaka leg. (FIT) (FUFJ); 4 ♂♂, 1 ♀, Tokushima Pref., Yamakawa Town, Mt. Kôtsu, 25.vii.–2.viii.2003, K. Tanaka leg. (FIT) (FUFJ); 1♂, Tokushima Pref., Misato Village, Ôhira (alt. 800m), 14–23.vii.2003, Y. Kurota leg. (FUFJ). HONSHU: 3 ♂♂, 1 ♀, Osaka Pref., Minoo City, Minoo Park, 13-15.v.2007, T. Lackner leg. (1♂ in ZSPC, others in JCHE); 2 ♂♂, Mie Pref., Suzuka City, Nishi-Shônai-chô, Ichinotani, 6.v.2004, H. Yokozeki leg. (FUFJ); 1 ♂, 1 ♀, Gifu Pref., Kani City, Yasaka-Rindô, 18.v.2003, K. Toyoshima leg. (FIT) (FUFJ). KOREA: 1 ♂, Chunbuk Prov., Chôngûp, Naejangsan, Paekyang Area, 25.–26.v.1999, U.-S. Hwang & H.-J. Kim leg. (FIT) (CNUIC); 1 ♂, Kangwon Prov., Wonju City, Chiaksan, Kuryong Area, 10.vii.1999, U.-S. Hwang & H.-J. Kim leg. (FIT) (CNUIC). Diagnosis. Coloration. Dorsum brown; antennomeres 1–6 and 8 brown; antennomeres 7, 9, 10, and basal half of antennomere 11 dark brown, apical half of antennomere 11 light brown. Body 3.2–4.4 mm long, ca. 1.7× as long as wide (Fig. 27A). Head densely punctate, usually bearing some large punctures (Fig. 27A); antennomeres 1–3 each longer than wide; remaining antennomeres each wider than long; antennomere 11 robust (Fig. 27C). Pronotum simply and very feebly curved at posterior margin, punctation similar to that on head. Elytra not transversely strigose; each elytron bearing nine punctate rows with small number of large punctures and moderate number of very fine punctures between rows (Fig. 27D); row 9 invisible in dorsal view, subhumeral row as long as ca. 1/3 of elytral length (Fig. 27B); elytral rows composed of larger punctures than those of pronotum (Fig. 27A); sutural stria fine, arising from apex ca. to apical 2/5 of the elytral length. Metathoracic wings fully developed. Mesoventrite with one shallow excavation between median carina and transverse carina (Fig. 27E); median carina of mesoventrite low (Fig. 27E); metaventrite without sexual dimorphism. Legs showing sexual dimorphism on protarsi, protibiae, mesotarsi, and metatibiae; metafemur robust, with small dorsal posteroapical projection (Figs. 28G, 28H). Male. Protibiae gradually and distinctly widening from base towards apex at internal margins (Fig. 28E); tarsomeres 2–4 of protarsi and mesotarsi expanded (Fig. 28A); metatibiae curved inwards (Fig. 28C); abdominal sternite 8 weakly curved (Fig. 29C); aedeagus as shown in Figs. 29A, 29B. Female. Protibiae gradually and very feebly widening from base towards apex at internal margins (Fig. 28F); protarsi and mesotarsi slender (Fig. 28B); metatibiae almost straight (Fig. 28D); abdominal sternite 8 forked in middle of anterior margin (Fig. 29D); coxites and stylus as shown in Fig. 29E. Differential diagnosis. Leiodes koreana is similar to L. masatsugui sp. nov. by the characteristic shape of the female abdominal sternite 8 (see Figs. 29D and 35E), but may be distinguished from the latter by having males with a relatively slender aedeagus (Fig. 29A). In contrast, males of L. masatsugui sp. nov. have a robust aedeagus (Fig. 32A). Distribution. Japan (Kyushu, Shikoku, and Honshu), Korea. New to Japan.

Published as part of Hoshina, Hideto, 2012, Review of the tribes Sogdini and Leiodini from Japan and North Chishima Islands. Part II. Genera Hydnobius and Leiodes (Coleoptera: Leiodidae), pp. 1-168 in Acta Entomologica Musei Nationalis Pragae (suppl. 1) (suppl. 1) 52 on pages 51-53, DOI: 10.5281/zenodo.4272467