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Type: Article
Published: 2023-08-16
Page range: 441-448
Abstract views: 173
PDF downloaded: 21

A gynandromorph of the stonefly Amphinemura zonata (Okamoto, 1922) (Plecoptera: Nemouridae) from Japan

Nishizin; Sawara Ward; Fukuoka City; Fukuoka Prefecture 814-0002; Japan
Yamamoto Institute of Forest Biology; Yoshinokawa 1127; Uchiko Town; Ehime Prefecture 791-3511; Japan
Plecoptera gynandromorphism sexual mosaic Insecta

Abstract

A gynandromorph of Amphinemura zonata (Okamoto, 1922) collected from Matsubara-izumi Pond in Japan is described and illustrated as the first report in the genus. The specimen exhibits bilateral gynandromorphism on abdominal sterna 7–9 and the paraprocts. Male features occur on the right half and female features on the left half. In addition, the gynandromorph is predominantly female as it retains female features on the dorsal male half of the abdomen, has eggs in the abdomen, has female-length fore wings, and lacks main male features such as an epiproct and a hypoproct on sternum 9.

 

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