First Case of Gynandromorphism in the Orchid Bee Euglossa viridissima Friese, 1899 (Hymenoptera: Apidae: Euglossini) in El Salvador

The first case of gynandromorphism in the orchid bee Euglossa viridissima Friese is described and illustrated. A specimen collected in Popotlán, El Salvador, using an aromatic (eugenol) bait trap, exhibits a marked bilateral gynandromorphic pattern and a mild mixed pattern. The left side of the body exhibits male phenotypic characteristics, while the right side exhibits female characteristics. Asymmetries in the head (ivory markings and mandible), mesosoma (middle and hind legs), and metasoma are detailed. These gynandromorphic findings were compared with a regular male of the species, specifically the head and metasoma. This finding corresponds to the ninth case of this anomaly reported for the genus Euglossa, the eleventh for the tribe Euglossini, the first for the species E. viridissima, and the first record of a gynandromorphic bee for El Salvador.