Abstract
A survey was made of sperm from spermathecae of the following plant pest moths: Heliothis zea (Boddie), H. virescens (F.), Spodoptera frugiperda (J. E. Smith), Manduca sexta (Johannson), and Pectinophora gossypiella (Saunders). Emphasis was given to the extracellular sheath and tail components of eupyrene sperm, but some observations were made on the nuclei and on apyrene sperm. The eupyrene sperm all had similar components, but the sperm of each species had a characteristic organization. One exception to the eupyrene sperm similarity was the absence of an intrasheath rod in Spodoptera sperm. The apyrene sperm were virtually identical in the different species except for varying amounts of material beneath the sheaths. The most subsheath material was found in Manduca apyrene sperm, the least in Heliothis apyrene sperm.
Published Version
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