著者

SHIMIZU,Akira

出版者

Entomological Society of Japan

雑誌

Entomological science

巻号頁・発行日

vol.3, no.3, 2000-09-25

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Records of specimens suggesting cleptoparasitism of Poecilagenia sculpturata (Kohl) on Auplopus carbonarius (Scopoli) are reviewed, and the cleptoparasitic behavior of this species is described. In her searching behavior, female P. sculpturata repeatedly uses the antennae by applying them to the substrate near where other pompilids are nesting. The flagellar sensilla of this species are observed by SEM, and the following types of sensilla are found : sensilla placodea, sensilla basiconica A, pit organs, sensilla campaniformia, sensilla trichodea A, B, C, and sensilla spatulata. The structure of the antenna and sensilla of P. sculpturata is compared with that of A. carbonarius. The female P. sculpturata has a shorter and stouter fusiform flagellum with denser sensilla basiconica A on its anteroventral side. Similar structures are found in cleptoparasitic pompilids, Evagetes species. These structures are considered to have evolved due to convergence as an adaption to the cleptoparasitic mode of life. The sensilla basiconica A are presumed to play the most important role in locating the host or paralyzed spider.