23. 
394. 
395. 
226. 
397. 
398. 
apo. 
400. 
401. 
402. 
D. virgifera (Say) (Coleoptera, Chrysomelidae). M.S. 
Thesis, University of Nebraska, Lincoln. 33 p- illus. refs. 
. Stewart, P. 1945, Corn root worm can be checked. Seed 
World 57(5) :42, 44. 
. Stoner, W. N. 1963. A mosaic virus transmitted by 
beetles and a grasshopper. Phytopathology 53 (8) :890. 
. 1964. Some relations of a cucurbit virus to its 
insect vectors. Proc. N. Cent. Br, Entomol. Soc. Amer. 
11 Ole 
. Sutter, G. R. 1969. Treatment of corn rootworm larvae 
and adults with Bacillus thuringiensis and B. popilliae. 
J. Econ. Entomol. 62(3) : 756-757. illus. refs. 
. SuTTLE, P. J., G. J. Musick, and M. L. Farcuip. 1967. 
Study of larval migration of the western corn rootworm. 
J. Econ, Entomol. 60(5) : 1226-1228. illus. refs. 
. Swenk, M. H. 1913. The principal insects injurious to 
agriculture during 1911-1912. Nebr. State Entomol. Bull. 
1. 104 p. illus. refs. 
. Tate, H. D. 1945. Corn borers and corn rootworms. 
Nebr. State Bd. Agr. Annu. Rep. 45:195-197. illus. 
—______, and O. S. Bare. 1946. Corn rootworms. Nebr. 
Agr. Exp. Sta. Annu. Rep. 59:59-60. illus. 
ee and — = «1946. Corn rootworms. Nebr. 
Agr. Exp. Sta. Bull. 381. 12 p. illus. refs. 
——____, and D. Gates. 1944. Corn rootworms. Nebr. 
Agr. Exp. Sta. Annu. Rep. 58:58-59. illus. 
. THomas, C. 1881. New corn insect—Diabrotica longi- 
cornis Say. Ill. State Entomol. Annu. Rep. 10:44-46, 
. Turpin, F. T. 1971. A mathematical model for root- 
worm damage to corn in Iowa. Ph.D. Diss., Iowa State 
University. 96 p. illus. refs. 
————. 1971. Predicting corn rootworm damage. 
Agrichem. Age. July. p. 10. illus. 
eet. GCG! DomEnt, and D.C. Prerers. 1972. 
Edaphic and agronomic characters that affect potential 
for rootworm damage to corn in Iowa. J. Econ. Entomol. 
65(6) :1615-1619. illus. refs. maps. 
, and D. C. Perers. 1971. Survival of southern 
and western corn rootworm larvae in relation to soil tex- 
ture. J. Econ. Entomol. 64(6) : 1448-1451. illus. refs. 
USDA. 1969. [Distribution of northern, southern, and 
western corn rootworms.] Coop. Econ. Insect Rep. 
19(9) : 133-137. maps. 
USDA AcricutturAL RESEARCH SERVICE AND Forest 
Servic. 1967. Suggested guide for the use of insecticides 
to control insects affecting crops, livestock, households, 
stored products, forests, and forest products—1967. U.S. 
Dep. Agr. Agr. Handb. 331. 273 p. 
. 1968. Suggested guide for the use of insecti- 
cides to control insects affecting crops, livestock, house- 
holds, stored products, forests, and forest products—1968. 
U.S. Dep. Agr. Agr. Handb. 331 (Rev.). 273 p- 
Vice, E., and H. Rosapo E. 1950. Control of cornroot 
chrysomelids. Turrialba 1 (2) :91-92. illus. 
Watsu, B. D. 1866. Prof. W. S. Robertson, Kansas. 
In: Answers to correspondents. Pract. Entomol. 2(1) : 10. 
Watter, E. V. 1965. Northern corn rootworm resistance 
in sweet corn. J. Econ. Entomol. 58(6) : 1076-1078. illus. 
Wesster, F. M. 1894. The western corn root-worm. 
Diabrotica longicornis Say. Ohio Agr. Exp. Sta. Bull. 51: 
89-96. illus. refs. 
——_——. 1907. The chinch bug. U.S. Dep. Agr. Bur. 
Entomol. Bull. 69. 95 p. illus. refs. maps. 
————. 1908. [Northern corn rootworm. (Note.).] 
Proc. Entomol. Soc. Wash. 10( 1-2) : 73-74. 
410. 
412. 
G13: 
414. 
B13: 
416. 
aa 
ALS: 
ane 
420. 
a2 Ee 
BA. 
aon 
424: 
29) 
ny dee 
—__—. 1913. The western corn rootworm. U.S. Dep. 
Agr. Bull. 8. 8 p. illus. refs. 
. Wesster, R. L. 1915. Common corn insects. Iowa Agr. 
Exp. Sta. Circ. 23. 16 p. illus. 
. Weexman, G. E. 1967. Control corn rootworms with 
modern chemicals. Hoard’s Dairyman 112:591, 630-631. 
illus. maps. 
. WeEKMAN, G. T. 1961. Problems in rootworm control. 
Proc. N. Cent. Br. Entomol. Soc. Amer. 16:32-34. refs. 
——_—__. 1962. Corn rootworm control results—1961. 
Proc. N. Cent. Br. Entomol. Soc. Amer. 17:46-48. illus. 
. 1962. Diazinon controls ‘resistant? rootworms. 
Nebr. Agr. Exp. Sta. Quart. 8(4) :3-5. illus. maps. 
- 1962. Mechanical attrition of various granular 
carriers when used for corn rootworm control. Proc. N. 
Cent. Br. Entomol. Soc. Amer. 17:48-50. illus. refs. 
——. 1962. Resistant insects meet defeat. Crops & 
Soils Mag. 14(8) : 10-11. illus. 
—______. 1964. Future of soil insect control on corn in 
Nebraska. Proc. N. Cent. Br. Entomol. Soc. Amer. 19: 
84-85. 
—___. 1965. The corn rootworm situation in Ne- 
braska. Proc. N. Cent. Br. Entomol. Soc. Amer. 20: 63-64. 
———, and H. J. Batt. 1963. A portable electrically 
operated collecting device. J. Econ. Entomol. 56(5): 
708-709. illus. refs. 
, and D. E. Lawson. 1963. Adult emergence of 
corn rootworms at selected sites in 1962. Proc. N. Cent. 
Br. Entomol. Soc. Amer. 18:99. 
, and 1963. Chemical control of 
rootworms in Nebraska. Proc. N. Cent. Br. Entomol. Soc. 
Amer. 18:82. 
We tts, A. L., and G. Guyer. 1964. Control of the north- 
ern corn rootworm in Michigan. Mich. Agr. Exp. Sta. 
Quart. Bull. 46(4) :518-526. illus. refs. 
Wuirr, R. E. 1969. Populations of the northern corn 
rootworm. Coop. Econ. Insect Rep. 19(8) : 112-113. illus. 
maps. 
Wizz, G., H. C. Curanc, E. T. Hisss, and D. E. Law- 
son. 1972. Variations in egg hatch among western and 
northern corn rootworms from six midwestern states. je 
Kans. Entomol. Soc. 45(2) : 259-263. illus. refs. 
Witpg, G. E. 1969. Evaluation of corn rootworm control 
in Kansas in 1968. Proc. N. Cent. Br. Entomol. Soc. 
Amer. 24(2) : 133-134. illus. 
. 1971. Temperature effect on development of 
western corn rootworm eggs. J. Kans. Entomol. Soc. 
44(2):185-187. illus. refs. 
Witson, R. L. 1971. A search of plant introductions as a 
source of corn rootworm resistance. Ph.D. Diss., Iowa 
State University. 142 p. illus. refs. 
Wotr, D. C. 1952. New insecticide treatment that stops 
rootworm. Country Gent. 122(12) :26. illus. 
WresseEL1, H. B. 1965. A resume of soil insect control 
studies in southwestern Ontario, Proc. N. Cent. Br. 
Entomol, Soc. Amer. 20:161. 
ZeMAN, L. E. 1964. How to cope with new corn root- 
worm problems. Successful Farming 62(1):48-49, 102- 
103. illus. maps. 
ZuBer, M. S. 1968. Evaluations of corn root systems 
under various environments. Proc. Annu. Hybrid Corn 
Ind.-Res. Conf. 23:67-75. illus. refs. 
eG, Mesiox, and’M) lL. Farce. 1971) A 
method of evaluating corn strains for tolerance to the 
western corn rootworm. J. Econ. Entomol. 64(6) :1514- 
1518. illus. refs. 
13 
