Bees of Costa RicaPaul Hanson, Jorge Lobo Segura, Gordon W. Frankie, Rollin Coville, Ingrid Aguilar Monge · First published 2023Open the Tome
Wasps of the genus Trypoxylon subgenus Trypargilum in North AmericaRollin E. Coville · First published 1981Open the Tome
