-'rra 



1A2 



$120.00 per thousand weevils while that of mechanical methods may be as low 

 as $3.00 per thousand. Both types of rearing methods are necessary for 

 studies of the boll weevil and both methods will be described in this 

 chapter. 



268. , and Landin, M. 1966. Adult boll weevils and eggs marked with 



dye fed in larval diet, J. Econ. Entomol. 59: A74-475. 



In a study at this laboratory, more than 60 dyes' were incorpor.ited into 



the medium at 100 and 1000 ppm and fed to larvae of the boll weevil, Antho- 



nomus grandis Boheman. Adults that showed any trace of color at eclosion 



were held until the color disappeared. The following dyes imparted color 



to the weevils but were excreted in the feces within 3 days after eclosion: 



Dye Coloration 



4-Dimethylamino-4- Yellow adults 



methylazobenzene 



Fast Green Pale green pupae, 



colorless adults 



Nile Blue Deep blue adults 



Neutral Red Deep red adults 



Acridine Orange Pale yellow adults 



Toluidine Blue Pale blue adults 



Calcozine Navy Blue MB® Deep blue adults 



Calcozine Green® Pale green adults 



Methylene Blue Pale blue adults 



Spirit Soluble Fast Violet® Pale lavender adults 



Spirit Soluble Fast Red® l^ght pink larv,'ae and pupae, 



colorless adults 



''^"^ Spirit Soluble Fast Black® Lavender adults ♦- 



269. Gemrlch, E. G. , II; Lee, B. L.; Nelson, S. J.; and Rlzzo, V. L. 1978. 



Insecticidal aminothio derivatives of the pestlcidal carbamate methomyl. 



J. Agric. Food Chera. 26: 391-395. 

 The insecticidal activities of a series of aminothio derivatives of methomyl 

 were investigated. In general, the spectrum of activity of the compounds 

 closely paralleled that of the parent, methomyl, often being equitoxic to the 

 southern armyworm ( Spodoptera eridania Cramer) , cabbage looper ( Trichoplusia 



