The Conopidae of Costa Rica (Diptera) (Part 1: Conopinae – Conopini & Tropidomyiini) Author Stuke, Jens-Hermann Author Skevington, Jeffrey H. text Zootaxa 2007 1528 1 40 journal article 10.5281/zenodo.273851 91e318c7-d881-4379-bced-1d8b63355d41 1175-5326 273851 Physoconops ( Aconops ) longistylus (Kröber) Conops longistylus Kröber 1916 : 149 . Literature: Kröber (1937, as " Conops longistylus Kröb. ") . The four nominal species of Aconops belong to three valid species. These three species of the subgenus Aconops cannot be determined using existing keys. The characters used by Camras (1955) are not suitable to distinguish the species. We haven't seen any specimens of this subgenus from Costa Rica and therefore the occurrence of Physoconops longistylus in Costa Rica remains questionable, because it is possible that Kröber confused his " Conops longistylus " with other similar species.