530 



Howard (N. F.). The Mexican Bean Beetle in the Southeastern U.S. 



— Jl. Econ. Ent., Geneva, N.Y., xv, no. 4, August 1922, 

 pp. 265-275, 2 figs. 



Epilachna conupta, Muls. (Mexican bean beetle) is gradually spread- 

 ing in the United States, the trend of the distribution in the south- 

 eastern area being to the north. With one exception the infestation 

 occurs in the hilly country ; this exception, however, proves that 

 the beetle is capable of thriving in flat country under extreme southern 

 conditions. 



During life-history experiments development was not observed at 

 temperatures below 60° F., but eggs withstood 31° F. at the end of 

 March. In northern Alabama the insect is not completely dormant 

 during the winter. The larvae of the moths, Prodenia ornithogalli , 

 Guen., Laphygma frugiperda, S. & A., and Heliothis ohsoleta, F., and 

 Sinea diadema, F. (diadem assassin bug) feed on the larvae and pupae 

 of E. corrupta under field conditions, but are not considered of much 

 value in natural control. 



Artificial remedial measures are discussed, including arsenical sprays 

 [R.A.E., A, X, 436], dusts and cultural measures [RA.E., A, ix, 374]. 



Brixton (W. E). Tobacco Plant injured by the Seed Corn Maggot. — 



Jl. Econ. Ent., Geneva, N.Y., xv, no. 4, August 1922, pp. 275-276. 



Phorbia fusciceps, Zett., is recorded as injuring tobacco plants grown 

 on a light sandy soil. The infested area had been covered with clover 

 the preceding season and had been ploughed under in the spring. 

 The damage was sufficient to prevent a good crop of wrapper leaf 

 tobacco. Simflar injury is recorded by W. P. Flint, to strawberry 

 plants in Illinois. 



Davis (J. J.). Insect Problems in Indiana during 1921. — Jl. Econ. 

 Ent., Geneva, N.Y., xv, no. 4, August 1922, pp. 277-282. 



The mild winter of 1920-21 was one of the most important factors 

 favouring insect development in Indiana during that season. Hyper a 

 {Phytonomus) punctata (clover-leaf weevil) was particularly abundant 

 from the end of March to the end of April, after which red and English 

 clover suffered from the attacks of H. (P.) nigrirostris (clover-bud 

 worm) . The latter weevil has been gradually increasing in abundance, 

 particularly in central Indiana, and may be expected to be an annual 

 pest. 



Calcium arsenate and gypsum (1 to 20) have been extensively used 

 against Diahrotica vittata (striped cucumber beetle) with satisfactory 

 results. 



The more important Aphids occurring during the season were 

 Anur aphis persicae-niger (peach aphis). Aphis gossypii (melon aphis) 

 and A. houghtonensis (gooseberry aphis). 



Pulvinaria vitis (cottony maple scale) and Lepidosaphes iilmi (oyster 

 shell scale) were unusually prevalent in the northern half of the State. 

 Nicotine oleate at the rate of 1 oz. to 1 U.S. gal., or 1 oz. nicotine 

 sulphate added to 5 U.S. gals, water containing 1 lb. fish-oil soap, 

 was applied on 15th June, some days after the eggs had hatched. 

 From the results it would seem that the latter is preferable to nicotine 

 oleate for the control of immature scales such as P. vitis, L. ulmi and 

 A spidiotus perniciosus. 



