- bulbus ejaculatorius
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(ARTHROPODA: Insecta)Ductus ejaculatorius. a. In some Hymenoptera, the swollen almost spherical structure. b. In Lepidoptera, the distal part. c. In Diptera, a muscled, syringe-like structure.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.