Explanation of Names
Apiomerus flaviventris Herrich-Schaeffer, 1848
flaviventris (L). 'yellow-bellied'
Size
Males: 15.2-18.0 mm. Females: 17.0-19.9 mm.
Identification
Sympatric with the following members of the crassipes group (separated by genitalia): A. californicus, A. cazieri, A. montanus, and A. spissipes. Easily separated from A. californicus and A. montanus by their black coloration. Separated from A. cazieri and A. spissipes by its bright coloration and bright yellow abdominal venter. A. flaviventris is also much larger than A. cazieri.
Range
sw US (s.CA-w.TX, CO, s.NV) / Mex. -
Map (1)(2), mostly s.CA-AZ-s.NV
Remarks
This species exhibits a high level of polychromatism although in the United States the color pattern is fairly uniform
(3).
The female collects resin from plants and applies it to freshly laid eggs as a defensive substance.