Why do male crickets and katydids provide nutritious packages during mating?

In the context of orthopteran reproductive behavior, male crickets and katydids produce a spermatophore—a specialized, thin-walled reservoir containing sperm and accessory gland secretions—that is attached to the female during mating.1

While the primary function of the spermatophore is to facilitate the transfer of sperm to the female's spermatheca for fertilization, these structures often provide a nutritional benefit to the female. In many species, the female consumes parts of the spermatophore after it is attached. This behavior is consistent with the principles of differential parental investment, where males may provide resources to increase the fitness of their mates or offspring, or to influence female mating decisions. By providing these nutritious packages, males may enhance the female's reproductive success, which in turn can benefit the male by ensuring the survival or quality of the eggs he has fertilized.23