Revision of the genus Dercetina from Taiwan and their similar species, with description of a new species from Myanmar (Insecta, Chrysomelidae, Galerucinae)

Abstract

Species of the genus Dercetina Gressitt & Kimoto, 1963 in Taiwan are revised. Dercetina azumai Gressitt and Kimoto, 1966, D. itoi Kimoto, 1969, and D. shirozui Kimoto, 1969 are redescribed. Dercetina chinensis (Weise, 1889), D. taiwana (Chujo, 1938), and D. unifasciata (Allard, 1889) are removed from synonymy with D. flavocincta (Hope, 1831). Dercetina flavocincta and D. nakanei Kimoto, 1969 are transferred to the genus Arthrotus Motschulsky, 1858. Lectotypes are designated for Dercetis taiwana Chujo, 1938, and Antipha varipennis Jacoby, 1890. The synonymies of Antipha flavofasciata Baly, 1879 and Dercetes femoralis Weise, 1922 with Arthrotus flavocincta (Hope, 1831), Antipha varipennis Jacoby, 1890 with Dercetina chinensis (Weise, 1889) are supported. A new species, D. barclayi sp. n. which was confused with D. flavocincta, is described from Myanmar.