@article {520, title = {Revision of the Eristalis flower flies (Diptera: Syrphidae) of the Americas south of the United States}, journal = {Proceedings of the Entomological Society of Washington}, volume = {99}, number = {2}, year = {1997}, pages = {209-237}, address = {Washington}, abstract = {Three new species are described (Eristalis alleni, E. gatesi, and Palpada eristaloides); lectotypes are designated for bogotensis Macquart, circe Williston, latifrons Loew, rufoscutata Bigot, stipator Osten Sacken; new synonyms noted (Eristalis tenuifrons Curran 1930 = Palpada semicircula Walker 1852; Eristalis aztecus Hull 1935 = circe Williston 1891; Eristalis colombica Macquart 1855 = tenax Linnaeus 1758); and all species redescribed (Eristalis bellardi Jaennicke and persa Williston).}, keywords = {Diptera, Eristalis, Neotropical, Revision, Syrphidae}, author = {Thompson, F. Christian} } @article {521, title = {The genus Pleskeola Stackelberg (Diptera: Syrphidae), a junior synonym of Parhelophilus Girschner}, journal = {Proceedings of the Entomological Society of Washington}, volume = {99}, number = {4}, year = {1997}, pages = {628-640}, address = {Washington}, abstract = {The genus Pleskeola (n. syn.) is synonymized with Parhelophilus. The species (porcus and sibiricus, n, comb.) associated with the name Pleskeola are redescribed. A checklist and key to species of Parhelophilus is presented. Four new synonyms and one new combination are reported (Helophilus anniae Brimley 1923 = flavifacies Bigot 1883; Parhelophilus obscurior Violovitsh 1960 and Helophilus citricornis Shiraki 1968 = kurentzovi Violovitsh 1960; Parhelophilus currani Fluke 1953 = laetus Loew 1863; Helophilus pilosus Hunter 1897 is transferred to Lejops (Lejops)).}, keywords = {Diptera, Parhelophilus, Pleskeola, Syrphidae}, author = {Thompson, F. Christian} }