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Connecticut Agricultural Experiment Station

New Haven, Connecticut

TWENTY-FOURTH REPORT

OF THE

STATE ENTOMOLOGIST

OF

CONNECTICUT

1924

W. E. BRITTON, Ph.D.
State Entomologist

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

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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.
Leaf-Roller on Pin Oak.

Biting Dog Louse in Connecticut.
The Azalea Scale..

Tropical Cockroach in Greenhouse.

Spiny Caterpillars on Hollyhocks.

Sawfly Feeding on White Pine.
Mealy Bug on Taxus...

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..
Sawfly Larvae Defoliating Honeysuckle.

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.

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Less miscellaneous receipts deposited with State Treasurer
during the year...

600.64

$15,790.10

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