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Twenty-Fourth Report of the State Entomologist of Connecticut.. 225

Letter of Submittal..

225

Report of Receipts and Expenditures.

225

Summary of Office and Inspection Work.

226

Publications of the Entomological Department, 1924.

226

Department Staff and Work.

228

Entomological Features of 1924.

230

Fruit Insects....

230

Vegetable Insects.

232

Shade Tree and Forest Insects

235

Miscellaneous Insects..

236

Convention of Entomological Workers..

237

Inspection of Nurseries in 1924...

238

List of Pests Found in Nurseries in 1924..

238

Nursery Firms in Connecticut Receiving Certificates in 1924. 240

Inspection of Raspberry Plantations. .

243

Special Certificates on Raspberry Plants.

244

Inspection of Imported Nursery Stock...

244

Pests Found on Imported Nursery Stock.

245

Inspection of Apiaries in 1924.

246

European Foul Brood.

247

American Foul Brood.

248

Statistics of Inspection..

249

Summary...

252

Registration of Bees.

253

Report of Gipsy Moth Work.

254

New Equipment....

254

Details of Infestations.

255

Statistics of Infestations.

265

Summary of Statistics.

269

Financial Statement.

270

Parasites ...

270

Parasites Liberated in Connecticut, 1924.

271

Barrier Zone.

272

Quarantines..

272

Area Which Must Now Be Covered in Gipsy Moth Work. 276

Recommendations..

276

The European Corn Borer in Connecticut..

277

Methods of Clean-Up Work.

278

Summary of Clean-Up Work.

281

Repeal of Quarantine...

281

Further Work Next Season.

282

Insects Found on Twigs of Fruit Trees.

283

Insect Inhabitants of Apple Twigs.

284

Dusting Versus Spraying ..:

286

Orchards Under Experiment.

287

Acknowledgments.

287

Materials Used..

287

Number and Time of Applications.

287

Summary..

292

Summary of Five Years Work on Spraying and Dusting.

293

Tests of Insecticides for the Control of the Asiatic Beetle.

294

Studies of the Habits and Control of the Oriental Peach Moth in 1924 299

Control Experiments...

302

Effect of Various Insecticides on the Eggs of the European Red

Mite 304

The Alcohol-Formalin Solution for Control of American Foul Brood 305

The Egg of the Blueberry Spittle-Bug....

307

PAGE

308 310 310 311 312 312 313 314 314

The Woolly Aphid of Apple and Elm...

Life History..

Control Measures.
The Lime Tree Winter Moth..

Injury...
Habits and Life History.
Descriptions..

Methods of Control.
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...

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AUTHORSHIP. 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, XXVI, 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.

RECEIPTS.
From W. L. Slate, Jr., Treasurer...

$15,000.00
Added to appropriation from miscellaneous
receipts by State Board of Control.

759.18
Miscellaneous receipts during year $82.55

117.79
400.30
30.92 631.56

$16,390.74

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

600.64

$15,790.10 EXPENDITURES. For Salaries and Wages.

$11,022.34 Printing and Illustrations.

79.23 Postage...

22.29 Stationery.

36.63 Furniture and Fixtures.

316.43 Books and Periodicals (new)

61.61 Books and Periodicals (binding)

128.25 Laboratory Supplies.

186.26 Spraying Supplies.

116.44 Express, Freight and Cartage.

20.67

Automobiles: Insurance..

Supplies and Equipment.
Repairs.
Gasoline.

Oil..
Traveling Expenses.
Miscellaneous.
Telephone and Telegraph.
Rental and Storage.

$ 86.39

97.95 173.36 206.99

10.55
482.03

2,40
2.34
2.50

$13,054.66

Balance on hand June 30, 1924... $2,704.52
Miscellaneous receipts.

30.92

2,735.44

$15,790.10

Memorandum.-This account has been audited by the State Auditors of Public Accounts and the balance returned to the State Treasurer,

SUMMARY OF INSPECTION AND OFFICE WORK. 337 samples of insects received for identification, 122 nurseries inspected. 118 regular certificates granted.

5 special raspberry certificates granted. 116 duplicate certificates furnished to be filed in other states. 109 parcels of nursery stock inspected and certified. 953 bales of mountain laurel and willow (21 trips) inspected and certified

for shipment into New York. 49 orchards and gardens examined. 33 shipments, containing 313 cases, 3,489,170 plants, imported nursery

stock inspected. 17 shipments, or 51 per cent, found infested with insects or fungi. 953 apiaries, containing 8,929 colonies inspected. 17 apiaries and 47 colonies found infested with European foul brood.

10 apiaries and 20 colonies found infested with American foul brood. 2,265 letters written on official work. 456 circular letters. 591 post cards.

46 reports to Federal Horticultural Board.
2,303 bulletins, etc., mailed on request or to answer inquiries.

70 packages sent by mail or express.
38 lectures and addresses at institutes, granges and other meetings.

PUBLICATIONS OF THE ENTOMOLOGICAL DEPARTMENT,

1924. By W. E. BRITTON: Twenty-third Report of the State Entomologist of Connecticut (Bulletin

256), 96 pages, 8 figures, 16 plates; 10,500 copies distributed in July. Inspection of Nurseries in 1923, 8 pages, reprinted from the Report. The Apple and Thorn Skeletonizer, Bulletin of Immediate Information

39, May 17. Spraying Shade Trees, Bulletin of Immediate Information 40, May 20. The Apple Maggot or Railroad Worm, Bulletin of Immediate Informa

tion 43, June 16. The Gipsy Moth Quarantine, Bulletin of Immediate Information 44,

4 pages, July 15. Report of Committee on Injurious Insects, Proceedings 33rd Annual

Meeting Connecticut Pomological Society, page 41, 1924.

Some Insects to be Combatted Next Season, Proceedings 33rd Annual

Meeting, Connecticut Pomological Society, page 72, 1924. Insects Attacking Vegetable Crops in Connecticut in 1923, Report

Connecticut Vegetable Growers' Association, page 43, April 1924. An Asiatic Beetle (Anomala orientalis) in Connecticut, Journal of Economic Entomology, Vol.

17, page 309, April, 1924. The Gipsy Moth and Our Forests, New England Farms, June 21, 1924. Connecticut Tree Workers' Institute, Florists' Exchange, Vol. LVII,

page 890, March 22, 1924. Proceedings Shade Tree Conference, Florists' Exchange, Vol. LVIII,

page 703, September 6, 1924 (also a four-page reprint). Some Insect Information from a Connecticut Conference, Florists'

Exchange, Vol. LVIII, Supplement Page A, November 29, 1924. Meeting of Connecticut Entomologists, Journal of Economic Ento

mology, Vol. 17, page 669, December, 1924. By W. E. BRITTON, Philip GARMAN, G. P. CLINTON and E. M. STODDARD: Information about Insecticides and Fungicides, Bulletin of Immediate

Information 30, March 26. Why and How to Spray, Bulletin of Immediate Information 31, March

28. By W. E. BRITTON AND Philip GARMAN: Dormant Sprays for Orchard Pests, Bulletin of Immediate Information

29, March 22. By W. E. BRITTON, G. P. CLINTON and W. 0. Filler: Tree Workers Holding Connecticut Certificates, Bulletin of Immediate

Information 35, 4 pages, April 25. By W. E. BRITTON AND R. C. BOTSFORD: Mosquitoes and Human Welfare by W. E. Britton, and Mosquito Con

trol Work, Season of 1923 by R. C. Botsford, 16 pages, 2 plates (1,000

copies reprinted from Report), June 24. By Philip GARMAN: The European Red Mite, Bulletin 252, 25 pages, 2 figures, 2 charts, 4

plates; 10,600 copies, February 1924. Control of European Red Mite in Connecticut, Proceedings, 33rd

Annual Meeting, Connecticut Pomological Society, page 44, 1924, The Oriental Peach Moth, Bulletin of Immediate Information 41, May

20. Factors Influencing the Effectiveness of Arsenate of Lead, Florists'

Exchange, Vol. LVIII, page 685, September 6. BY B. H. WALDEN: The Raspberry Fruit Worm, Bulletin 251, 11 pages, 1 figure, 4 plates;

10,600 copies, February 1924. The Raspberry Fruit Worm, Proceedings, 33rd Annual Meeting,

Connecticut Pomological Society, page 124, 1924. Spray for the Imported Currant Worm, Bulletin of Inmediate Infor

mation 34, April 21. By M. P. ZAPPE AND E. M. STODDARD: Results of Dusting versus Spraying in Connecticut Apple and Peach

Orchards in 1922, Crop Protection Digest, Bulletin Series No. 4, page 2, June 1924. The Calyx and Later Summer Sprays, Bulletin of Immediate Infor

mation 36, May 1. Peach Spraying, Bulletin of Immediate Information 37, May 3. Progress of Spraying and Dusting Experiments, Proceedings 33rd

Annual Meeting Connecticut Pomological Society, page 52, 1924.

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