64 



A gas chromatographic procedure was developed by which the four monoterpene 

 components in a synthetic preparation of the sex pheromone of the boll 

 weevil (A nt ho nomas grandis Boheman) could be analyzed with a single injection. 

 The compounds were detected by hydrogen flame ionization after chromatography 

 on a column loaded with 10% fluorosilicone (QF-1) . 



112. Bumgarner, J. E., and Lambremont, E. N. 1966. The lipid-class spectrum 

 and fatty-acid content of the boll weevil egg. Comp. Biochera. Physiol. 

 18: 975-981. 



1. Lipids froni eggs of the boll weevil ( Anthonomus grandis Boheman; Coleoptera, 

 Curculionidae) were fractionated into individual classes by a combination of 

 silicic acid and Florisil column chromatography. Triglycerides were the 

 predominant fraction, and accounted for more than 70 percent of the neutral 

 lipid matter. 2. The fatty acid content of adult males and females and eggs 

 resembles that of the diet when dietary fat content is high. Females feeding 

 on low fat diets deposit lipids in. the egg yolk which contain principally 

 thost fatty acids that the adult can synthesize from non-lipid components. 



113. Burke, H. R. 1966. Elytral interval polymorphism in Aiithonomus grandis 

 Boheman and Anthonomus vestitus Boheman (Coleoptera: Curculionidae). 

 Coleopt. Bull. 20: 104-106. 



The account of elytral interval polymorphism in A. grandis and A^. vestitus is 

 preliminary. The objectives here were to show that such polymorphism exists 

 and to point out the correlation between incidence of these polymorph variants 

 and geographic areas. Elytral interval polymorphism is presently being used 

 by the author as an additional factor in evaluating geographic variation in 

 the two species and may be of some vaJ.ue in future studies on their genetics. 

 Information derived from field and laboratory studies is now needed as a basis 

 for attempting to determine the nature and significance of the phenomenon. 



