Forewing length 11-27 mm (1)
, body length somewhat longer (and appearing longer yet when taking into account the long legs and antennae).
Key to species on pg. 33 of Townes(1957)
Hemipepsis are quite similar looking to Pepsis and Entypus, but distinguishable if clearly resolved images of wing venation are available. For details, see the posts thumbnailed below:
See also comments by Nick Fensler under this post
e. Texas, north to Kansas, west to California. H. mexicana and H. toussainti are more restricted in range than H. ustulata.
On the ground in arid or semi-arid habitats. Males guard perches on the tops of shrubs. Both sexes are found at flowers.
June-September in the northern part of the range. Can be found nearly year-round in the southern part of the range.
Females provision with Theraphosids. Both sexes are found on flowers, especially milkweed.
Usually a single generation per year; perhaps a second in the extreme southern part of the range.
are called "Tarantula Hawks." The genera are difficult to distinguish in the field and have very similar life histories. See account for Pepsis.
Milne has photo of Hemipepsis sp.
--#458, describes, p. 839. (2)
Univ. Calif. Riverside Insect FAQ
--describes biology of Pepsis and Hemipepsis as identical, says genera difficult to distinguish (based on wing venation).