Green, onion-shaped, pubescent, succulent, thick-walled, with a narrow larval chamber inside containing a single larva. Length, 4-7mm.; width, 3.50-5 mm.
”- BEUTENMULLER, WILLIAM. "On some apparently new Cecidomyiidae." The Canadian Entomologist 40.2 (1908): 73-75.: (1908) ON SOME APPARENTLY NEW CECIDOMYIIDAE©
Reference: https://www.biodiversitylibrary.org/item/88726#page/87/mode/1up