Thermonectus basillaris ssp. basillaris

"Thermonectus basillaris" is a species of diving beetle native to the eastern United States, southern Ontario, Canada, and Cuba. "T. basillaris" is a pioneering species that occurs in temporary ponds and readily fly. Adults are 8.1 to 10.7 millimetres long and 4.7 to 5.9 millimetres wide.