re 
N. F. Howard, in charge of bean-insect investigations, Colum- 
bus, Ohio, reports that early in June it appeared that the bean beetle 
infestation in the vicinity of Columbus was so light that it would be 
difficult to obtain sufficient larvae for experimental work. A survey 
of the Cincinnati area was made and it was found that the bean beetle 
was not abundant. At Marietta and Belpre the beetle was also relative— 
ly scarce. At Athens, Ohio, the infestation is rather heavy, probably 
as a result of the heavy infestation which occurred late in the fall of 
1930, after the crop had been picked. 
S. E. Crumb, in charge of investigations of the European earwig, 
Puyallup, Wash., has completed three experiments in which entire city 
blocks have been baited. After being out two nights the bait was prac— 
tically ruined owing to excessive rains. The mortality, based on the 
difference between the earwig population at the time the bait was ap-— 
plied and that found one week later, was from 83 to 91 per cent. When 
it is considered that mortality increases over a period of several weeks 
owing to the fact that the living earwigs eat the poisoned dead, the final 
result of these baitings should be fairly satisfactory, notwithstanding 
adverse weather conditions. 
J. N. Tenhet, in charge of soil-—insect investigations, Fairfax, 
S. C., states that evidence now being accumulated seems to indicate a wide 
jivergence in larval habits between the sand wireworm, Horistonotus uhleri 
Horn, and the wireworm Monocrepidius vespertinus Fab. Larvae of H. 
corn will almost invariably find the food in less than 24 hours. This is 
in marked contrast to tests conducted with M. vespertinus, where only 20% 
of the larvae ever found the bait when it was 6 inches away. The sand 
wireworm readily travels 10 or 12 feet through the soil in search of food, 
within 24 hours. It is possible that when food is scarce even much great— 
er distances are traveled. Whereas larvae of M. vespertinus feed only 
4 very short time before again wandering off through the soil, the sand 
wireworm seems to stick much closer to its focd supply. Although much 
more active and energetic in the search for food, larvae of H. uhleri 
remain in one place much longer once the food is found. These observa— 
tions suggest that soil fumigation of a baited area might give interest— 
ing results. 
FOREST INSECTS 
Dr. F. C. Craighead spent a week in early July with Dr. R. @ 
Hall, who is conducting a study of the locust borer in Ohio and adjacent 
States. Dr. Craighead also spent a week in July at the field station 
located at Asheville, N. C., going over work relating to the southern 
pine beetle in that region. 
J. V. Schaffner, jr., who has been making observations on the 
spruce leaf-miner (Epinotia nanana Treit.) in Maine, reports that the in- 
festation is much lighter than in 1930, but many moths were observed on 
June 15 to 18, which indicates an infestation for 1932. 
