Connecticut Agricultural Experiment Station New Haven, Connecticut TWENTY-FOURTH REPORT OF THE STATE ENTOMOLOGIST OF CONNECTICUT 1924 W. E. BRITTON, Ph.D. The Bulletins of this Station are mailed free to citizens of Connecticut who apply for them, and to other applicants as far as the editions permit. OFFICERS AND STAFF March, 1925. BOARD OF CONTROL. His Excellency, John H. Trumbull, ex-officio, President. Charles R. Treat, Vice President.......... George A. Hopson, Secretary. . . . . Wm. L. Slate, Jr., Director and Treasurer.. Joseph W. Alsop.... Elijah Rogers.. Edward C. Schneider.. Francis F. Lincoln. .Orange Mount Carmel New Haven ....Avon .Southington Middletown Cheshire Report of Receipts and Expenditures.. Summary of Office and Inspection Work... Publications of the Entomological Department, 1924. The European Corn Borer in Connecticut. Insects Found on Twigs of Fruit Trees. Summary of Five Years Work on Spraying and Dusting. Tests of Insecticides for the Control of the Asiatic Beetle. Substances Attractive to the Cabbage Maggot Fly Experiences in Dusting to Kill Pea Aphid, Cabbage Aphid, and Onion Thrips..... Hints on Photographing Insects. Mosquito Control Work in Connecticut. The Work by Towns... Notes on Miscellaneous Insects. Miners in Milkweed Pods. Walnut Bud Moth.. Sawfly on Arbor-Vitae. Biting Dog Louse in Connecticut. Tropical Cockroach in Greenhouse. Spiny Caterpillars on Hollyhocks. Sawfly Feeding on White Pine. The Bag Worm.. Blue Elm Beetle in Branford. European Pine Shoot Moth in Connecticut. A Beetle from Europe. Pine Seedlings Nearly Girdled by Hylobius pales. Western Corn Root Worm in Connecticut. A European Sawfly Leaf-Miner of Birch.. Rudbeckia "Golden Glow" Stripped by Sawfly Larvae.. Index... AUTHORSHIP. PAGE 308 310 310 311 312 312 313 314 314 319 321 331 332 336 336 336 336 336 336 337 337 337 337 338 338 338 339 339 340 340 340 341 342 343 For bibliographical purposes, all matter in this Report (Bulletin 265) should be credited to W. E. Britton, except where otherwise indicated. ILLUSTRATIONS. The illustrations in this Bulletin are from the following sources: text figures are from drawings as follows: Fig. 7, map drawn by Alex. Cahn and shaded by Stoddard; Figs. 8-15, drawn by B. H. Walden. Plates are from photographs: Plate XXXVI, b, by R. B. Friend; XXX, b, by Dr. Philip Garman; XXXIII, b and c, by Nicholas Matiuck; XXIV, b, and XXV, a, by J. L. Rogers; XXXIII, a, and XXXIV, by R. C. Botsford; XVII, XVIII, b, XIX, XX, XXI, a, XXV, b, and XXIX, c, by W. E. Britton; XVIII, a, XXI,' b, XXII, XXIII, XXIV, a, XXVÍ, XXVII, XXVIII, XXIX, a and b, XXX, a, b, c, d and e, XXXI, XXXII, XXXV, and XXXVI, a, by B. H. Walden. TWENTY-FOURTH REPORT OF THE State Entomologist of Connecticut To the Director and Board of Control of the Connecticut Agricultural Experiment Station. I have the honor to transmit, herewith, my twenty-fourth annual report as State Entomologist of Connecticut. As in preceding years, the report covers the activities of the Department of Entomology, as regards both the control and inspection work provided for by Statute, and the various lines of research which after all more properly represent the type of effort for which Agricultural Experiment Stations were established. Respectfully submitted, W. E. BRITTON, State and Station Entomologist. INSECT PEST ACCOUNT. REPORT OF RECEIPTS AND EXPENDITURES OF THE STATE ENTOMOLOGIST From July 1, 1923 to June 30, 1924. Less miscellaneous receipts deposited with State Treasurer 600.64 $15,790.10 |