Omineus humeralis Lewis, 1895

Hsiao, Yun & Pollock, Darren A., 2019, Contribution to the knowledge of the genus Omineus Lewis, 1895 in Taiwan, with description of two new species (Coleoptera, Mycteridae, Eurypinae), Zootaxa 4568 (3), pp. 533-547 : 535

Omineus humeralis Lewis, 1895

( Figs. 1–2 )

Comparative specimens. 1 ♀, Mt. Hiko , Fukuoka Pref., Kyushu, Japan, 14. VII. 1954, H. Kamiya leg. // J 010930 ( KUM) ; 1 ♀, Hyô-no-sen, Hyogo, Japan, 25–28. VII. 1975, H. Sasaji leg. // J 010929 ( KUM) ; 1 ♀, Tochinoki-tôge , Fukui, Japan, 21. VI. 1981, H. Sasaji leg. // J 010928 ( KUM) ; 1 ♀, Mt. Fujikura , Japan, 31. V. 1984 , collector unknown // J 010931 ( KUM) .

Taiwan material examined. 1 ♂, Chunyang, Nantou, Taiwan , 13. VII.–10. VIII. 2004, Malaise trap ( KCN), C.-S. Lin & W.- T. Yang leg. // NMNS ENT 5263-327 ( NMNS); 1 ♀, Chunyang, Nantou, Taiwan , 9. V.–6. VI . 2006 , Malaise trap (KCN), C.-S. Lin & W.- T. Yang leg. // NMNS ENT 7299-760 (NMNS); 1 ♀, Chunyang, Nantou, Taiwan , 8. V.–6. VI . 2007 , Malaise trap (KCN), C.-S. Lin & W.- T. Yang leg. // NMNS ENT 7547-867 (NMNS).

Distribution. Japan; Taiwan. Specimens of O. humeralis from Taiwan have been collected in Lushan Hot Spring and Chunyang, located in central Taiwan.

Natural history. Almost nothing is known about the natural history of O. humeralis in Taiwan, other than that the elevation of known collection localities ranges from about 1,000–1,200 meters.

Remarks. Hashimoto & Yoshitomi (2010) reported this species in Taiwan from a single female specimen collected from Lushan Hot Spring. With three additional specimens examined from the collection of NMNS, the occurrence of this species in Taiwan is reconfirmed. However, the pubescence along the elytral suture of the population in Taiwan is somewhat longer than comparative specimens from Japan. It is assumed that this represents variation within a single species, pending further study.

Figures

FIGURES 1–6. Habitus, dorsal view: 1–2. Omineus humeralis Lewis, 1895; 3–4. O. taiwanensis sp. nov., male holotype and female paratype; 5–6. O. chuangae sp. nov., male holotype and female paratype. 1, 3, 5. Male; 2, 4, 6. Female. Scale bar = 1.0 mm.