Three new species of Acidiostigma Hendel (Diptera: Tephritidae: Trypetinae) and an updated key to species from the eastern Palaearctic and Oriental Regions Chen, Xiaolin Zhang, Lijie Zhao, Mingshui Zootaxa 2016 4092 3 401 413 MWK Hendel, 1927 Hendel 1927 [151,479,1841,1868] Insecta Tephritidae Acidiostigma Animalia Diptera 0 401 Arthropoda genus    ParahypenidiumShiraki 1933: 203. Type-species:  Hypenidium polyfasciatumMiyake, by original designation.  Euleia( Acidiostigma); Munro 1935: 22.   Acidiella (Acidiostigma); Chen 1948: 76.   ShiracidiaIto 1984: 111. Type-species:  Trypeta s-nigrumMatsumura, by original designation.   Diagnosis.  AcidiostigmaHendel(sensu Han and Wang, 1997) is readily differentiated from all other known Trypetinigenera by cell sc conspicuously prolonged, equal (or almost so) to cell c and sometimes enlarged in males; wing pattern  Hemilea-like or banded; typically with 3 pairs of frontal setae and 2 pairs of orbital setae; dorsocentral setae situated behind the line of postsutural supra-alars; oviscape flattened; aculeus broad, apically tapered to a point and generally serrated on sides. The larvae of  A. polyfasciatum(Matsumura)have been reported from Japanto mine the leaves of  Clerodendron trichomum, a member of the Verbenaceae (Ito, 1984). With the addition of 3 new species described below, 24 species of this genus are recorded from the eastern Palaearctic and Oriental Regions of the World, 17 of which occur in China. The species pairs  A. lucens(Munro)/  A. harmandi(Seguy)and  A. sonani(Shiraki)/  A. yoshinoi(Shiraki)are suspected of being conspecific based on Han and Wang (1997). However, the typesare difficult to check at the present stage, so they are accepted as different species in this paper provisionally. Their clarification is left for the future.