<i>Heleomyza captiosa</i> (Diptera: Heleomyzidae) newly recorded from the Nearctic region, with an updated key to Nearctic <i>Heleomyza</i> and similar <i>Scoliocentra</i>

Abstract The fly Heleomyza serrata (Linnaeus) (Diptera: Heleomyzidae) is reported to range widely throughout the United States of America and Canada. However, in Eurasia, this species is restricted to northern regions; in central and southern Europe, H. serrata is replaced by the similar species H. captiosa (Gorodkov), which can be distinguished from H. serrata by the male genitalia. We report H. captiosa from Kentucky, United States of America, the first Nearctic record of this species. The taxonomy of Nearctic Heleomyza Fallén is discussed, and we propose to transfer three species to the genus Scoliocentra Loew: Scoliocentra ( Scoliocentra ) bisetata (Garrett) comb. nov. , S. ( Leriola Gorodkov) latens (Aldrich) comb. nov. , and S. ( L. ) nebulosa (Coquillett) comb. nov. We recognise Anypotacta Czerny as a subgenus of Heleomyza and transfer the two Nearctic species to that genus: H. ( A. ) aldrichi Garrett comb. nov. and H. ( A. ) gilli nom. nov. (new replacement name for Anypotacta czernyi Gill, 1962). Finally, we provide an updated key to Nearctic Heleomyza and morphologically similar species of Scoliocentra . Further study will be required to ascertain the range and abundance of H. captiosa in North America.