A male-dependent stenogamous condition was found in a strain of Aedes taeniorhynchus that was derived from a field collection taken near Puerto Penasco, Mexico. Mating occurred readily in this strain, even when the adults were confined in 8-dram glass shell vials. Under such conditions, mating also occurred in interstrain crosses involving Puerto Penasco males with females from Florida strains of Ae. taeniorhynchus, but not in reciprocal crosses. For males of the Puerto Penasco strain, flight did not appear to be a prerequisite for mating.