Orasema scaura

Identification
Distinguished from other members of the coloradensis group by having all tarsi with four segments, tarsomeres distinctly lobate with lobes broadly overlapping subsequent tarsomeres on the ventral side (Fig. 9E), and antennal flagellum length shorter than height of the head (Fig. 9B). This is the only eucharitid known to have 4-segmented tarsi.

Distribution
United States: AZ, CA, ID, NV

Habitat
Swept from Ericameria nauseosa (Asteraceae) in Idaho.

Nomenclature
Etymology. Latin, meaning “swollen ankles,” which refers to the thick, lobate tarsomeres.