Annual summary of Rhopalocera encountered in Ontario in 1971
By: compiled by P.M. Catling and C.H. Walker.  On the occurrence of the little sulphur butterfly (Eurema lisa) in Ontario / Paul M. Catling.  Some notes on collecting in the vicinity of Leticia, Colombia in February 1974 / Q.F. Hess.
Contributors: Walker, C. H. 1936-; Hess, Q. F.; Toronto Entomologists Association
Series: TEA occasional paper -- no. 4; Occasional publication (Toronto Entomologists' Association) -- no. 4.
Publisher: Toronto Entomologists' Association
Published: 1974
Place of publication: [Toronto]
Language: eng
Subjects: Butterflies -- Ontario.
Other titles: On the occurrence of the little sulphur butterfly (Eurema lisa) in Ontario; Some notes on collecting in the vicinity of Leticia, Colombia in February 1974; Lepidoptera of Ontario; Ontario Lepidoptera
Notes: Includes bibliographical references.

Gift -- Mr. Quimby Hess