INSECT. -PEST SURVEY BULLETIN 
Vol. 20 
September 1, 19^0 
No. 7 
THE MORE IMPORTANT RECORDS POR AUGUST 
During the early part of August hatching of second-generation M, mexicanus 
Sauss, continued in southeastern Colorado and contiguous areas, and as far north 
as central Nebraska. Nymphs were present in varying numbers and instars and eggi 
in various stages of development, indicating a prolonged progressive hatch. In- 
dications were that the infestations might become severe; however, egg desicca- 
tion caused a heavy reduction in viability in the southern part of the area. In 
some Texas Panhandle counties baiting was continued against M, differentialis 
(Thos.) and Aeolophus turnbulli Thos. Local dissemina.tion of M, mexicanus and M, 
bivitattus Say were reported in the upper Red River Valley area in North Dakota 
and Minnesota, where baiting was continued late in the month, particularly in 
Minnesota, to protect crops remaining after grain harvest. Dispersal flights of 
M. mexicanus occurred in central Montana, including Phillips, Valley, Treasure, 
Yellowstone, Cascade, and Judith Basin Counties, Gravid females were numerous 
in this section and egg laying was under way during the ea,rly part of the period. 
Observations for D, longipennis Thos. continued to reveal a scarcity of this 
species although a previously u;nreported light infestation, consisting of one 
per 20 sqxiare yards, \<a,s foijnd in Kiowa and Prowers Counties, Colo,, and extend- 
ing into Greeley County, Kans, 
Mormon crickets had practically completed egg laying in Montana and Washing- 
ton during the month, OTne egg Survey in V^ashington showed a decrease in total 
acreage infested. 
The European earwig was reported as doing some damage at Lewiston, Mont, 
In Idaho the insect is seriously numerous in the northern part of the State and 
has also been collected at Twin Palls, It is also seriously abundant in south- 
ern Washington, 
The semi tropical armyworm is seriously abundant in parts of Florida, Other 
species of noctuids are damaging the cannery pea crop in .'western Washington, 
More or less serious outbreaks of armyworm were reported from Maine, Pennsylvanii 
Ohio, and Minnesota, 
Japanese beetle is more abundant than heretofore recorded in Connecticut, 
Similar conditions are reported from the northern part of the infested area of 
the Hudson River Valley of New Yorlj; State, on the periphery of the infested area 
in Pennsylvania and Virginia, 
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