Gall. — These are green, glabrous, cortical stem swellings which, as they age, become brown and present a very close resemblance to a group of Lecaniums. The gall has a height of about 2 mm. and a diameter of 3.5 mm., the midge escaping through a circular apical orifice.

- EP Felt: (1916) New Western Gall Midges^©