Summaries of Rhopalocera encountered in Ontario in 1972, 1973 and 1974.  Map of Ontario showing region with 2000 mean annual growing degree days or less.
Contributors: Riotte, J. C. E.; Toronto Entomologists Association
Edition: Rev., 75.
Series: TEA occasional paper -- no. 4; Occasional publication (Toronto Entomologists' Association) -- no. 4.
Publisher: Toronto Entomologists' Association
Published: 1975
Place of publication: [Toronto]
Language: eng
Subjects: Butterflies -- Ontario.
Other titles: Annual summary of Rhopalocera in Ontario in 1972; Annual summary of Rhopalocera in Ontario in 1973; Annual summary of Rhopalocera in Ontario in 1974; Lepidoptera of Ontario; Ontario Lepidoptera
Notes: Cover title.

Compiled by Q.F. Hess, with the assistance of J.C.E. Riotte.

Gift -- Mr. Quimby Hess