Vol. 33, No. 1 (March 1950)

Table of Contents

Articles

Front Matter PDF
Editors
Six New Aphids from Pennsylvania PDF
Pepper, J. O. 3-15
Source of Early Aphid Infestations in Shade-Grown Tobacco PDF
Chamberlin, F. S. 16-17
Research Request PDF
Editors 17
Biological Notes on Anagyrus Antoninae Timberlake (Hymenoptera-Encyrtidae) and its Host Antonina Graminis (Maskell) (Homoptera-Coccidae) PDF
Riherd, Paul T. 18-22
The Aquatic and Semiaquatic Hemiptera of Northern Florida. Part 1: Gerridae PDF
Herring, Jon L. 23-32
Nymphs of Three Species of Gomphus. (Odonata) PDF
Westfall, Minter J., Jr. 33-39
Back Matter PDF
Editors