@article {264, title = {Revision of the Sterphus cybele species group (Diptera: Syrphidae)}, journal = {Proceedings Of The Entomological Society Of Washington}, volume = {96}, number = {3}, year = {1994}, pages = {483-495}, address = {Washington}, keywords = {Arthropods, BOLIVIA, Chiriqui Province, COLOMBIA, Coroice \& Yungas, COSTA RICA, Dipterans/True Flies, Insects, Invertebrates, Maracay, Monte Socorro, New species, New species Sterphus cydippe, New species Sterphus janzeni, New species Sterphus venezuelaensis, PANAMA, Rancho Grande, Sterphus calypso, Syrphidae, VENEZUELA}, author = {Hippa, Heikki and Thompson, F. Christian} } @article {519, title = {Spilomyia flower flies of the New World (Diptera: Syrphidae)}, journal = {Memoirs of the Entomological Society of Washington}, volume = {18}, year = {1996}, pages = {261-272}, keywords = {Arthropods, checklists, COSTA RICA, Dipterans/True Flies, Insects, Invertebrates, NEARCTIC REGION, NEOTROPICAL REGION, New species, New World, San Gerardo de Dota, San Jose, species list, Spilomyia, Syrphidae, Systematics \& checklist Spilomyia wirthi}, author = {Thompson, F. Christian} } @article {615, title = {Nuevas especies de Sterphus (Diptera: Syrphidae) de Costa Rica con notas sobre otras especies presentes en Costa Rica}, journal = {Southwestern Entomologist}, volume = {22}, number = {1}, year = {1997}, note = {New species of Sterphus (Diptera: Syrphidae) from Costa Rica with notes on other species present in Costa Rica}, pages = {79-90}, keywords = {Arthropods, COSTA RICA, Dipterans/True Flies, Distribution \& systematics, Insects, Invertebrates, Sterphus, Syrphidae}, author = {Zumbado, M. A. and Thompson, F. C.} }