American two-winged flies of the genus sylogaster macquart - Aldrich, John Merton
Sobretiro de: Proceedings U. S. National Museum 78 (1852): 1-27 Encuadernado con: Key to gall midges (A resume of studies I-VII, itonididae)/ Ephraim Porter Leit 70-203
Keywords: Dipteros -- Colecciones de escritos Stylogaster