Taxonomic review of Costa Rican Pipunculidae (Insecta: Diptera)

Twenty nine species and ten genera of Pipunculidae are reported from Costa Rica, including eight previously recorded species, thirteen new species and eight new records. The following species are described and illustrated: Cephalosphaera guanacastensis, C. procera, C. zumbadoi, Eudorylas abnormalis, E. echinatus, E. falx, E. moragai, E. serratus, Elmohardyia adunca, E. bifida, E. costaricana, E. galeata and E. maculata. The new records are Chalarus connexus Rafael, Parapipunculus elegantulus (Williston), Cephalosphaera jamaicensis (Johnson), C. macroctenia Rafael, C. panamaensis Hardy, Microcephalops williamsi (Hardy), Eudorylas vidali Rafael and Basileunculus rex (Curran). Parapipunculus elegantulus (Williston) is redescribed from the holotype. The previously unknown females of P. elegantulus and C. jamaicensis are described. All Costa Rican species are listed. Keys to the species of Cephalosphaera Enderlein and Elmohardyia Rafael are presented.<br>Se informa de la presencia de veintinueve especies y diez géneros de Pipunculidae en Costa Rica, con ocho especies previamente registradas, trece nuevas y ocho nuevos registros. Se describen e ilustran las seguientes especies: Cephalosphaera guanacastensis, C. procera, C. zumbadoi, Eudorylas abnormalis, E. echinatus, E. falx, E. moragai, E. serratus, Elmohardyia adunca, E. bifida, E. costaricana, E. galeata y E. maculata. Los nuevos registros son Chalarus connexus Rafael, Parapipunculus elegantulus (Williston), Cephalosphaera jamaicensis (Johnson), C. macroctenia Rafael, C. panamaensis Hardy, Microcephalops williamsi (Hardy), Eudorylas vidali Rafael y Basileunculus rex (Curran). Parapipunculus elegantulus (Williston) es redescrito a partir del holotipo. Se describen las hembras previamente desconocidas de P. elegantulus y C. jamaicensis. Se presenta la lista de todas las especies costarricensis y claves para las especies de Cephalosphaera Enderlein y Elmohardyia Rafael.