Gynandromorph of Culex inatomii (Diptera: Culicidae) collected at Yonago Waterbirds Sanctuary, Tottori, Japan

Abstract

Mosquito collection was carried out monthly using dry-ice traps at Yonago Waterbirds Sanctuary, Tottori Prefecture, Japan, and Culex inatomii was found to be present at a high density. One gynandromorph specimen of Cx. inatomii was collected in July 2017 and the morphology of the head, abdomen, and anterior claws of the foretarsi and midtarsi was examined and the sex was determined. The head and the right midtarsus were identified as female, whereas the abdomen and the left foretarsus and left midtarsus were male. These results indicated that the specimen had the head of a female, the abdomen of a male, and the thorax was divided bilaterally or obliquely. This gynandromorphic finding is the first report for Cx. inatomii worldwide.