Abstract
The beginning of oviposition (Ritcher 1939), the time of ovarial development at different geographical locations (Weaver and King 1954), the rate of egg development during the preoviposition period (Cram 1958), and the determination of whether females are in reproductive diapause (Beards and Strong 1966) have all been determined by dissection of insect ovaries. Moreover, it is often possible to determine whether the female of some insects has mated by removing the bursa to search for the spermatophore (Johnson and Hays 1969). Also, the ovaries reflect the effects of chemosterilants (Wilson and Hays 1969), gonadotropic hormones (Sahota 1969), and irradiation (Strong et al. 1970).
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