Anthomyzidae (Diptera) of Taiwan: new species but no new records

Abstract: Species of the family Anthomyzidae (Diptera: Acalyptrata) occurring in Taiwan are reviewed. Eleven species have been recognized, 8 of them new to science. However, because of limited and poorly preserved material, only three species of the genus Anthomyza Fallén, 1810, viz. A. robusta sp. nov. (Chiayi and Nantou Counties, both sexes), A. caesarea sp. nov. (Taichung City area, both sexes) and A. elongata sp. nov. (Chiayi County, female only), are described. The remaining 5 undescribed species, viz. Amygdalops sp. nov. near cuspidatus (Taichung City area), Amygdalops sp. nov. near curtistylus (Nantou and Kinmen Counties), Anthomyza sp. nov. near elongata (Yilan County), Anthomyza sp. nov. (1) near flavosterna (Chiayi County) and Anthomyza sp. nov. (2) near flavosterna (Nantou County), are diagnosed but remain unnamed. A new species group of Anthomyza, viz. the A. flavosterna group, is established and diagnosed, to include the East Palearctic A. flavosterna Sueyoshi & Roháček, 2003, A. caesarea sp. nov., A. elongata sp. nov. and 3 additional unnamed species from Taiwan, while the remaining A. robusta sp nov. belongs to the A. bellatrix group. All six Taiwanese Anthomyza species seem to be associated with montane habitats and could be endemic. It is estimated that up to 20 species of Anthomyzidae could occur in Taiwan. The longitudinal dark pattern of the wing, found in A. caesarea sp. nov., is recorded for the first time in the genus Anthomyza which is the fourth lineage of Anthomyzidae in which this type of pattern has independently evolved. Preliminary keys to Taiwanese species of the genera Amygdalops Lamb, 1914 and Anthomyza are presented.

Key words: Diptera, Anthomyzidae, Amygdalops, Anthomyza, biodiversity, biology, distribution, keys, new species, relationships, taxonomy, unnamed species, wing pattern, Taiwan