Gall. This species was reared from an elongate fusiform swelling on the stem of Asclepias incarnata. It occurs invariably at the joint and on that account presents a symmetrical appearance, which at first sight appears normal. The galls usually contain two larvae, one on each side of the septum of the joint.

- John M. Clarke, EP Felt, Homer D. House: (1917) Report of the State Botanist 1916^©