Head width at the widest point was significantly correlated 

 with the weight of 6-day-old pupae. The average number of 

 ovarioles/female was correlated with the average weight of the 

 pupa and the average width of the head. 



319. J. L. Eschle, S. E. Kunz, and J. M. Dreiss. 1974. 



Sterile-male technique for suppression of the horn fly: effects of 

 irradiation, handling, and release on laboratory-reared flies. 

 Environ. Entomol. 3(2): 287-289. 



Emergence of adults was reduced slightly by irradiation and 

 significantly by shipment and release. Refrigeration to delay 

 emergence of adults reduced percentage emergence. 



320. C. R. Ward, and J. L. Eschle. 1973. Rearing and biol- 

 ogy of the horn fly in the laboratory: effects of density on sur- 

 vival and fecundity of adults. Environ. Entomol. 2(2): 223- 

 224. 



When 100 adult flies were placed in cages of 7 sizes or various 

 numbers of flies were placed in 237-cm 3 cages, the hatchability 

 of the eggs obtained from the more densely populated cages was 

 always higher. Survival of flies was higher when the cages were 

 less densely populated. Densities of caged flies ranging from 0.6 

 to 9.5 cm 3 of space/fly were recommended for rearing laboratory 

 flies. 



321. Schmidt, F. M. 1971. Ranchers adopt aerial spraying for flies. 



Serving Farm, Ranch, Home. Univ. Nebr. Coll. Agric. Home 

 Econ. Q. 18(2): 15-16. 



322. Schnabl, J. 1911. Dipterologische sammelreise nach Korsika. 



Dtsch. Entmol. Z. p. 97. 



323. Schumann, H. 1961. Die eier von fliegen. Mikrokosmos 50: 



297-300. 



324. 1963. Zur larvalsystematik der Muscinae nebst besch- 



reibung einiger musciden und anthomyidenlarven. Dtsch. 

 Entomol. Z. 10: 134-163. 



Discussed larval stages of various muscine flies including H. i. 

 irritans and H. t. titillans. Includes key for separating third stage 

 muscid larvae and illustrations of cephalopharyngeal skeletons 

 and spiracular plates for various species of muscids. 



325. Schwartz, B m R. E. Rebrassier, J. E. Ackert, and others. 1947. 



Report of the committee on parasitic diseases. U.S. Livestock 

 Sanit. Assoc. Rep. 50: 98. 



326. Schwarz, M., R. W. Miller, J. E. Wright, and others. 1974. 



Compounds related to juvenile hormone. Exceptional activity of 

 arylterpenoid compounds in four species of flies. J. Econ. 



Entomol. 67(5): 598-601. 



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