1. The Hessian fly: its history, character, transformations, and habits Author(s): Fitch, Asa, 1809-1879 Publication: Albany : Printed by C. Van Benthuysen and Co., 1847 Subject(s): Diptera
2. An essay upon the wheat-fly, and some species allied to it Author(s): Fitch, Asa, 1809-1879 Publication: Albany : C. Van Benthuysen and Co., 1846 Subject(s): Diptera