Mate selection by female katydids (Orthoptera: Tettigoniidae, Conocephalus nigropleurum)

Female katydids receive a large spermatophore at mating which they subsequently eat. Available evidence indicates that spermatophore nutrients are important to female reproduction. Heavier males produce larger spermatophores. When given the choice between two singing males of different weights, females always mated with the larger individual.