2年ぶりかな、ヒヌマイトトンボのヤゴ調査に参加しました。For the first time in probably two years, I again took part in a field research on larvae ofMortonagrion hirosei Asahina.
尾鰓はちゃんと3本ありますが、たぶん2本は一回切れて再生したから、短いのだろうとのことでした。かわゆい子です! It properly has three anal gills but two of them are short probably because they re-grew after being chopped off once. Isn't he (or may be she) cute?