The chrysanthemum gall midge - Guyton, T. L. (1920)
Sobretiro de: Ohio Agri. Exp. Sta. bulletin; 341, 1920. Encuadernado con: Key to gall midges (A resume of studies I-VII, itonididae) by Ephraim Porter Felt 70-219
Keywords: Dipteros -- Colecciones de