Insect pests of farm, garden and orchard . inals bore intostems and leaves and later often tunnel out the vines like thesquash-vine borer. Those from eggs laid on the blossoms usu-ally feed in the blossoms, and a half-dozen may often befound feeding in single squash blossoms, for which they seemto have a decided preference. As they grow older the larvaewander from one plant to another, often boring into severalfruits. The older larvaj bore into the fruit, the excrementbeing pushed out from the orifice and later accumulating inthe cavity within. A single larva l)oring into the rind will dosuffi
Insect pests of farm, garden and orchard . inals bore intostems and leaves and later often tunnel out the vines like thesquash-vine borer. Those from eggs laid on the blossoms usu-ally feed in the blossoms, and a half-dozen may often befound feeding in single squash blossoms, for which they seemto have a decided preference. As they grow older the larvaewander from one plant to another, often boring into severalfruits. The older larvaj bore into the fruit, the excrementbeing pushed out from the orifice and later accumulating inthe cavity within. A single larva l)oring into the rind will dosufficient injury to start decay and ruin the fruit, and often a * Diaphania nitidalis Cramer. Family Pyraustidae. See A. L. Quaintance,Bulletin .54, Geo. Agr. Exp. Sta., R. I. Smith, Bulletin 214, N, C. Agr,Exp, Sta, 398 INSECT PESTS OF FARM, GARDEN AND ORCHARD half-dozen or more will be found in a single melon. Until halfgrown the larvae are marked wntli transverse rows of ))la(kspots. Tlie fvdl-grown larva is about three-quarters inch Fig. 287.—The pickle worm {Diaphauia nilidalis Cramer): larva, pupa, andadult—all enlarged. (Photos by Quaintance.) greenish or yellowish-green, with head and prothoracic shieldbrown. The larva reaches maturity in about two weeks, whena thin silken cocoon is made in the fold of a leaf in which the INJURIOUS TO MELONS, CUCUMBERS, SQUASH, ETC. 399 pupal stage is assumed, whicli occupies about a week. Tlie pupais one-half to one inch long, brown, with wing and leg sheathsJighter, and the tip of the abdomen bears a group of short curvedspines which hold the pupa more securely in the cocoon. DuringJuly and August the complete life cycle requires about Tour weeksin Georgia, and at least three definite generations have beenrecognized, the injury by thelarvse being most severe inJuly and August, evidentlyby the second winter is passed in thepupal stage in the foliage ortrash remaining on the —As injury is worstin la
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