Insect pests of farm, garden and orchard . -ellowish larva3 may be found some-times projecting. Celery is also attacked, the larvae eating thethick part of the root when it is half grown, stunting the plant soas to make it worthiest; for market. The life history of the species * Psila rosoe Fab. See Chittenden, Bulletin 33, n. Division of Ento-mology, U. S. Dept. Agr., p. 26. 416 INSECT PESTS OF FARM, GARDEN AND ORCHARD does not seem to have been can^fuUy ol)served, Ijut from analogyis probably somewhat similar to that of the cabbage root-maggot,except that the maggots of the carrot rust-f
Insect pests of farm, garden and orchard . -ellowish larva3 may be found some-times projecting. Celery is also attacked, the larvae eating thethick part of the root when it is half grown, stunting the plant soas to make it worthiest; for market. The life history of the species * Psila rosoe Fab. See Chittenden, Bulletin 33, n. Division of Ento-mology, U. S. Dept. Agr., p. 26. 416 INSECT PESTS OF FARM, GARDEN AND ORCHARD does not seem to have been can^fuUy ol)served, Ijut from analogyis probably somewhat similar to that of the cabbage root-maggot,except that the maggots of the carrot rust-fly develop and trans-form on carrots in storage if the temperatures be sufficient. Control.—Late sowing has bcnni practiced to advantage, andthe rotation of crops is of obvious importance, as is the deep plow-ing of infested land. Where carrots have been stored in earth, thisearth into which the larva3 have entered and pupated should be. Fi(i. .?)()().—TIk! carrot r\ist-(ly (Isiln rusac Fab.): o\ male Hy; 9, female fly,side view; a, aiitciiiiu of male; />, full-grown larva from .sitlo; r, spiraclesof same; a, anal exlremity from the end; c, puparium; /, young larva;(7, anal segnienf from the side—eight times natural size except a, c, d, g,more enhirged. (After (hittenden, U. S. Depl. Agr.) treated, either by it deeply, spreadinu il out in thin layerson the surface^ or throwing it into pools where it will be emulsion, 1 part stock solution to 10 of water spi-ayedalong the rows while the carrots ar(> young, oi- sand, land plasteror ashes, to 3 gallons of which 1 pint of kerosene has been added,sprinkled along the rows, have been of some \alue in should be applied three or four times, once a \\-eek after theroots begin to form, and particularly after the rows have beenthinned. MISCELLANEOUS GARDEN INSECTS 417 The Parsnip Webworm * The Parsnip Webworm is quite a common p
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