Taxonomic revision of the aphid-killing flies of the genus Sphaerophoria in the Western Hemisphere (Syrphidae)
By: [by] L. V. Knutson.
Series: Miscellaneous publications of the Entomological Society of America, v. 9, no. 1; Miscellaneous publications of the Entomological Society of America ;; v. 9, no. 1.
Publisher: Entomological Society of America
Published: 1973
Place of publication: [College Park, Md
Language: eng
Number of pages: 50
Subjects: Sphaerophoria -- Classification
Notes: Bibliography: p. 48-50.
Caption title.