Antennal sensilla and setae of evagetes parvus hymenoptera pompilidae

Lane, M.A.; Kurczewski, F.E.; Hanna, R.B.

Proceedings of the Entomological Society of Washington 90(4): 428-439


ISSN/ISBN: 0013-8797
Accession: 007022770

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The antennae of cleptoparasitic female Evagetes parvus were investigated using scanning electron microscopy. Setae and sensilla placodea, corrugated conical sensilla, pit organs, sensilla campaniformia, sensilla trichodea A, B, C, D, sensilla basiconica and sensilla spatulata were located, described and illustrated. The sensilla of E. parvus most clearly resemble those of two other pompilids, Anoplius tenebrosus and A. viaticus; however, spatulata sensilla were not found in either of these species. Two large zones on the flagellum of E. parvus are dominated by corrugated conical sensilla and placoid sensilla, respectively. The former are found only on the flattened ventral surfaces of flagellomeres 2-10, whereas the latter surround these sensilla and occur also on flagellomere 1. The corrugated conical sensilla in conjunction with the sensilla basiconica and sensilla spatulata are probably used in locating the host (buried spider) because of their ventral position on the antennal surface and their morphology.