Richardiidae

De, Claudio J. B., Wolff, Marta & Wendt, Lisiane D., 2011, A new stalk-eyed species of Batrachophthalmum Hendel (Diptera, Richardiidae) from Colombia, Zootaxa 2932, pp. 41-46 : 42-43

Key to Richardiidae genera and species with stalked eyes

1. Hind femur conspicuously more swollen than other femora. Fore femur with or without weak spines on ventral surface; if spines present, always weaker than spines of mid and hind femora. Male: when present, stalk-eyed species with head width less than body length ( Richardia Robineau-Desvoidy )......................................................... 2

-. Hind femur not strongly swollen, similar in shape to other femora. Fore femur always with spines stronger than spines on mid and hind femora. Male: when present, stalk-eyed species with head width greater than the body length.................. 3

2. Wing brown with posterior region yellowish, without defined spots. Abdomen yellow or light brown............................................................................................ Richardia telescopica Gerstaecker

-. Wing hyaline with a medial transversal and apical brown spots. Abdomen metallic blue......... Richardia stylops Hennig

3. Vein R2+3 doubly sinuate at tip....................................... Megalothoraca Hendel ( M. teleopsis Hennig *)

-. Vein R2+3 sinuous along its length ( Fig. 8 )........................................ ( Batrachophthalmum Hendel ) ... 4

4. Ocellar seta developed ( Figs. 3–4 ). Orbital seta absent ( Fig. 3 ). Two dorsocentral setae. Wing with a central, narrow and continuous median band ( Fig. 1 ). Abdomen yellowish ( Fig. 2 ). Male: eye swelled, not stalked (Calanga, Peru)................................................................................................... B. rufiventre Hendel

-. Ocellar seta weak ( Fig. 9 ). Orbital seta present ( Fig. 9 ). One dorsocentral seta. Wing with a wide and discontinuous median band ( Fig. 8 ). Abdomen light brown ( Fig. 7 ). Male: eye distinctly stalked; stalk approximately 1.5 times the length of the body ( Fig. 6 ) (Risaralda, Colombia).................................. B. quimbaya Carvalho, Wolff & Wendt , new species

Figures

FIGURES 6 – 10. Batrachophthalmum quimbaya, new species (male, CEUA). 6. Habitus, frontal view (holotype). 7. Habitus, lateral view (holotype). 8. Wing (paratype). 9. Head, frontal view (holotype). 10. Thorax, dorsal view (holotype). Scale: 2 mm.

FIGURES 1 – 5. Batrachophthalmum rufiventre Hendel (type-material, female, HNHM). 1. Wing. 2. Habitus, lateral view. 3. Head, frontal view. 4. Head, lateral view. 5. Head, dorsal view.