Chvalaea

Ale-Rocha, R., 2006, First description of species of Chvalaea Papp & Földvári from the Neotropical Region (Diptera, Hybotidae, Ocydromiinae), Zootaxa 1167, pp. 17-30 : 19

Key for identification of Neotropical species of Chvalaea

1. Scutum yellow with a dorsal brown stripe on notopleuron; all tarsi with black protuberances in ventral surface (Fig. 33) ..................................................... C. pulchra sp. n.

­ Scutum predominantly brown to black with some small yellowish areas; tarsal protuberances variable........................................................................................................... 2

2. All tarsi with black ventral protuberances; mid tibia with 3 long anterior bristles ( Fig. 18) .......................................................................................... C. catarinensis sp. n.

­ Only the hind tarsus with black ventral protuberances; mid tibia with 4 long anterior bristles ........................................................................................................................... 3

3. Basal flagellomere twice as long as the scape and pedicel together C. amazonica sp. n.

­ Basal flagellomere nearly as long as the scape and pedicel together............................ 4

4. Scutellum with 3 pairs of bristles; apex of the vein R1 straight, running close to and parallel to Costal vein; pterostigma narrow ( Fig. 38) ....................... C. boliviana sp. n..

­ Scutellum with 2 pairs of bristles; apex of the vein R1 sinuous, running a bit more distant of Costal vein; pterostigma slightly broadened ( Fig. 40) .............. C. masneri sp. n.