Gryllus vocalis

Scudder, 1901

Vocal Field Cricket

Gryllus vocalis, the vocal field cricket, is a North American field cricket in the Gryllidae. It inhabits desert regions of the southwestern United States. Research on this species has focused on female mating and resource allocation strategies, revealing that females experience diminishing returns from increasing numbers of matings and that sex and mating status influence resource allocation to , growth, and energy storage.

Pronunciation

How to pronounce Gryllus vocalis: /ˈɡrɪləs voʊˈkælɪs/

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Habitat

Desert regions

Distribution

Southwestern United States: Arizona, New Mexico, Texas, and Nevada. Distribution records also include California.

Behavior

Females mate multiple times; research indicates that increasing numbers of matings provide diminishing returns on . Females that mated 10 times laid more and had higher than those mating 5 times, but females mating 15 times showed no significant improvement over those mating 10 times. Females do not appear to limit mating rate due to survival costs, as number of matings did not affect post-experimental longevity. When allowed to mate ad libitum, females mated more frequently than the optimal number for maximal fitness.

Similar Taxa

Gryllus pennsylvanicusBoth are North American field crickets in the Gryllus; G. pennsylvanicus is the fall field cricket found in eastern and central North America, while G. vocalis is restricted to southwestern desert regions.
Gryllus veletisBoth are North American field crickets in the Gryllus; G. veletis is the spring field cricket with different seasonal activity patterns.

More Details

Sexual dimorphism in resource allocation

Research on G. vocalis reveals marked differences between sexes in resource allocation: females allocate more resources to direct reproductive investment, particularly when mated, while males prioritize structural size and energy storage. Mating status significantly influences female reproductive investment but has minimal effect on males, suggesting male reproductive success depends more on competition than direct reproductive effort.