. Bulletin of the Department of Agriculture. Agriculture. APPENDIX. The following generic and specific description is reprinted from "The pink bollworm, Pectinopliora gossypiella," by August Busck, Journal of Agricultural Research, vol. 9, no. 10, Washington, D. C, June 4, 1917. HOW TO DISTINGUISH THE PINK BOLLWORM IN THE FIELD. Definite and final determination of P. gossypiella in any stage can be made only by the aid of tlie microscope; and, unless a collector or inspector is thoroughly familiar with the species, all suspected material should be sent at once to the Bureau of E
. Bulletin of the Department of Agriculture. Agriculture. APPENDIX. The following generic and specific description is reprinted from "The pink bollworm, Pectinopliora gossypiella," by August Busck, Journal of Agricultural Research, vol. 9, no. 10, Washington, D. C, June 4, 1917. HOW TO DISTINGUISH THE PINK BOLLWORM IN THE FIELD. Definite and final determination of P. gossypiella in any stage can be made only by the aid of tlie microscope; and, unless a collector or inspector is thoroughly familiar with the species, all suspected material should be sent at once to the Bureau of Entomology for determination. Even a fraction of the insect in any of its stages can be recognized under the microscope by the characters given in succeeding sections of this Fig. 4.—Pink bolhvorm: Adult. (Busck.) The folio-wing essential characters, all of which can be discerned by the aid of a common pocket lens, will enable the practical worker to make a reasonably certain preliminary determination of the insect in all its stages in the field. If a small dark-brown moth is caught in the cotton field or in a cotton mill or ware- house and is found to have the forewings pointed and the hindmngs broad and sinuated below the tip and to possess long curved palpi and long stiff hairs on the first antennal joint, it is reasonably certain that the moth is P. gossypiella, the adult of the pink boll- worm (fig. 4, ^1). If, within the cotton boll or associated with stored cottonseed, a small white or pinkish caterpillar with ])rown head is found and under a hand lens the mandibles are 58. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.
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