Inland Floodwater Mosquito - Aedes vexans
This is an adult female Aedes vexans that is gravid (full of eggs). You can tell that she's gravid from her distended abdomen. Aedes vexans are most easily characterized by their unbanded proboscis, scutum with short brown scales, but no obvious pattern, the pale basal, bilobed bands on the abdominal terga, and the narrow basal bands on the hindtarsomeres.
Aedes vexans is a known vector of Dirofilaria immitis (dog heartworm).
This mosquito was attracted to a moth light.