Lauxaniidae

Key to Lauxaniidae from the oceanic Archipelago of Fernando de Noronha 1 Anterior fronto-orbital seta reclinate (Figs. 5C, D, 7C, D); ocellar triangle not strongly contrasting with remainder of frons (Figs. 5E, 7E); postsutural intra-alar seta present (Fig. 5E); 2 katepisternal setae (Figs. 5A, 7A); epandrium with dorsal rectangular brown spot (Figs. 5G, 6A, 7G, 8A)....................................................................... 2 - Anterior fronto-orbital seta inclinate (Figs. 1C, 3C); ocellar triangle surrounded by dark brown patch contrasting with otherwise orange frons (Figs. 1E, 3C); postsutural intra-alar seta absent (Figs. 1E, 3E); 1 katepisternal seta (Figs. 1A, 3B); epandrium homogeneously yellow to pale yellow (Figs. 1G, 2A–C, 3G, 4A, B)............................................. 3 2 Face yellow with an oval dark brown spot at middle of lower margin (Fig. 7C); thorax with dorsocentral and supra-alar brown stripes (Fig. 7E); anterior margin of wing dark brown (Fig. 7F).............. Poecilominettia octovittata (Williston, 1896) - Face homogeneously brownish (Fig. 5C); thorax homogenously brownish (Fig. 5E); wing wholly hyaline (Fig. 5F)................................................................... Poecilominettia erebus Soares & Gaimari, sp. nov. 3 First-flagellomere elongated, about 8X longer than high (Fig. 3A, B, D); face yellow with median rounded dark brown spot (Fig. 3C); surstylus elongated, about 4X longer than wide, somewhat finger-shaped (Fig. 4A, B)........................................................................................... Pachyopella flavida (Wiedemann, 1824) - First flagellomere short, about 2.5X longer than high (Fig. 1D); face homogeneously yellow (Fig. 1C); surstylus somewhat oval, 1.5X longer than wide at widest point, with pointed apex (Fig. 2A–C)... Camptoprosopella equatorialis Shewell, 1939