Sexing wasps in the genus Ammophila (abdominal sternites) - Ammophila -
Tonopah Desert, Maricopa County, Arizona, USA May 4, 2015 Size: 20mm
The sexual dimorphism in this subfamily is very subtle. Finding the gender in this genus and many related wasp genera may be accomplished with a clear image of the antennae segments or flagellomeres, the abdominal segments and the tarsi of the forelegs.
flagellomeres - male = 11, female = 10
tergites and sternites - male = 7, female = 6
tarsal combs on the front forelegs = females only
Contributed by Bob Biagi on 1 August, 2015 - 9:52am Last updated 15 March, 2017 - 3:30pm
Disclaimer: Dedicated naturalists volunteer their time and resources here to provide this service. We strive to provide accurate information, but we are mostly just amateurs attempting to make sense of a diverse natural world. If you need expert professional advice, contact your local extension office.