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 the 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 paper. 



Fig. 4.— Pink bollworm: Adult. (Busck.) 



The following 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 f orewings pointed and the hindwings 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, A). 



If, within the cotton boll or associated with stored cottonseed, a small white or 

 pinkish caterpillar with brown head is found and under a hand lens the mandibles are 

 5S 



