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Rhopalum jessonicum
(Bischoff, 1921)
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Body black, but posterior portion of second gastral segment brownish, and part of legs yellowish brown. First gastral segment slender and petiolate. Clypeus with silvery-white hairs; its anterior margin with a rectangular projection in female. This species hunts book lice (Psocodea) as prey. The genus Rhopalum has nearly 20 species in Japan, many of which are probaly tube-renters.
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Crabronidae
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Rhopalum
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Body length :
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female
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5-7 mm
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male
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5-7 mm
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Distribution in Japan :
Hokkaido, Honshu, Shikoku, Kyushu, Chishima Islands
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Dorsal view of female
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Lateral view of female
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Frontal view of female
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Dorsal view of male
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Lateral view of male
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Frontal view of male
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