Author： GRAVES PETER N.
Publisher： Entomological Society of America
ISSN： 1938-2901
Source： Annals of the Entomological Society of America, Vol.62, Iss.3, 1969-05, pp. : 595-602
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Abstract
A comparative study of the spermatophores, and their modes of attachment, of 29 species of Blattaria shows distinct differences in the 2 phyletic lineages: Blattoidea and Blaberoidea. An apparent true bursa copulatrix, for retention of the spermatophore, has evolved only in some of the ovoviviparous and viviparous Blaberidae, and reaches its highest development in members of the panchloroid complex. Reduction in size or loss of sclerites of the female's genital chamber probably resulted from the trend toward the development of a bursa copulatrix.
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