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Thirty-nine species of the shore-fly family Ephydridae that occur on islands of the Republic of Seychelles are reviewed. Included are keys to the appropriate suprageneric categories, genera, and species. Distributional data for all included species are presented, and new taxa are described and illustrated. Six new species are described (type locality in parenthesis): Psilopa victoria (Seychelles....
The 12 New World species of Leptopsilopa are reviewed, including the following new species (type localities noted parenthetically): L. andiana (Peru. Huánuco: Espensa, [11 km N Huánuco]), L.flavicoxa (Belize. Stann Creek: Cockscomb Basin Wildlife Sanctuary [16°47'N, 88°30'W]), L. martharum (United States. Texas. Jim Wells: Mathis (7.5 km S; Nueces River; 28°02.2'N, 97°52.2'W; 15 m), and L. placentia...
The placement of the tribe Gastropini within the subfamily Gymnomyzinae, with the tribe Gymnomyzini as a sister-group, is supported. Validity for two genera Gastrops Williston and Notacanthina Macquart (senior synonym of Beckeriella Williston) is maintained. Particular characters of their proboscis, ventral receptacle and the male terminalia are presented. A key to species and habitus photographs...
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