Spermatophores are sporadically encountered throughout the entire phylum Annelida. They occur widely scattered in polychaetes, including the myzostomids and archiannelids (reviewed by Schroeder and Hermans 1975; Westheide 1984), and are also found in many Clitellata, that is, in both the oligochaetes and leeches (reviewed by Lasserre 1975).
KeywordsBody Wall Sperm Duct Ejaculatory Bulb Sperm Mass Vesicula Seminales
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