Gynandromorphism is a rare, abnormal phenomenon in which both female and male characteristics are simultaneously displayed in an organism. It has been described in many arthropods, including ticks. This unique occurrence is known within several species of Amblyomma, Dermacentor, Haemaphysalis, Hyalomma, Ixodes, and Rhipicephalus. Bipartite protogynander is the most common form of gynandromorphism, whereas gynander intriqué is the rarest type among the ticks. Here, we report the first case of a gynandromorph of Hyalomma marginatum Koch, 1844 collected from a naturally infested human during a tick survey in the Tokat Province of Turkey in 2006. It is an interesting gynander intriqué, with features of a protogynander. The tick described here displays abnormal characters such as an alloscutum with a male consucutum in dorsal view, male and female spiracular plates, female genital aperture under the male genital flap, and adanal plates located on the both side of the anus, whereas accessory plates are on the left side only in ventral view.
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Vol. 98 • No. 6