Internal reproductive anatomy is described and compared for two species of solitary hymenopteran ectoparasitoids: Dinarmus basalis (Rondani) 1877 (Chalcidoidea: Pteromalidae) and Stenocorse bruchivora (Crawford) 1909 (lchneumonoidea: Braconidae). Although both species showed the same basic composition in their reproductive systems, certain interspecific anatomical differences were evident following comparisons of glandular type and form (glandular complexes) in both sexes. For example, females of both species were characterized by a vagina, a spherical spermatheca with associated gland, and two ovaries comprised of three ovarioles each. Yet, D. basalis females occasionally showed an extra ovariole. D. basalis females also differed from S. bruchivora females in possessing a glandular complex (with a small Dufour's gland) at the base of the ovipositor, as well as a common oviduct. Some S. bruchivora females, on the other hand, were characterized by more than one basal oocyte per ovariole when compared to D. basalis females. In addition, the female glandular complex in S. bruchivora was comprised of a poison gland, whose various filaments converged to form a U-shaped reservoir used for storing their secretions. The reservoir itself appeared as a highly ornamented, chitinous tube that was covered by a thick layer of muscle. This study also includes the first known anatomical description of male reproductive structures for these species. D. basalis males could be characterized by two ovoid testicles, two spherical seminal vesicles (one below each testicle), and two short accessory glands that opened into the aedeagus along with the vas deferens. In contrast, S. bruchivora males showed two ovoid testicles, whose vas deferens were folded beneath the testicles and seemed to function as seminal vesicles. Finally, both species possessed a pair of accessory glands (appearing as long, blind tubes) that opened into the aedeagus. The eadeagal duct in turn, is united down with the vas deferens. Reproduction Stenocorse bruchivora (Braconidae ); Dinarmus basalis (Pteromalidae ); Reproductive system; Male & female internal anatomy none