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Nebraska and 
Colorado 
M. H. Swenk (March 26): There is developing an outbreak of the 
army cutworm, Eux oa auz iliari s , in western Nebraska and north- 
eastern Colorado. The af footed area in Nebraska, according to 
reports to date, includes southeastern Scottsbluff County, eastern 
Banner County, southern Morrill County, and south into Kimball 
County. The worms were first reported from Kimball County on 
February 8 and from northeastern Banner County on February 23. 
They began to be abundantly active during the second week in 
March, and at the present time are present in large numbers in 
some of the fields, assuming their characteristic armyworm habits. 
I cannot at this time predict how much injury they will do. 
Apparently this outbreak extends' south at least to Akron, Colo., 
for the Superintendent of the Field Station of the Bureau of Plant 
Industry at that place advises me that these cutworms "are to be 
found in myriads, in all sizes from very small to large, migrating 
over the surface of the ground, and even found in the house." 
From past experiences this abundance of army cutworms will in- 
crease during April and the worms will not be over entirely until 
May 10 to 15. Then there will be a heavy flight of the adult 
moths during the last week in May and the early part of June, when 
the moths will occur by the millions around the farm buildings. 
Wyoming 
R. A. Cooley (March 27): Letter from C. L. Corkins , State Ento- 
mologist, Laramie, Wyo., dated March 24, stating that the first 
insect damage reported is by the western army cutworm which reached 
him that date. 
TEE WHEAT -STEM SAWFLY ( Cephus pygnaeu s L. ) 
and THE BLACK CEPHIL (Tracheitis tabidus Fab. ) 
GENERAL 
C. C. Hill (U. S. Entomological Laboratory, Carlisle, Pa.)(March 
28): The accompanying tables show the present abundance in cer- 
tain localities in the East of the two common saw-flies, Tracholus 
tabidus Fab. , and Cephus. pyamaeus Linn. , which infest wheat in 
the Eastern United States. The collections of the material upon 
which the data are Haas e& was largely made by H. D. Smith. Both 
pests are of interest at this time. 
Cephus pygne eus attracts attention because of its occurrence 
during the last few years in alarming abundance in certain locali- 
ties in the State of New York (the report of its infestation in 
that state is left to the New York State Entomologists). This 
outbreak has been felt as far south as the region of the Susque- 
hanna Valley in Pennsylvania, and in the vicinity of Montoursville 
it has been sttff iciently abundant to attract the attention of far- 
mers. The records for 1924, however, show some decrease over 
the infestation found in 1923 in this locality. 
Trachelus tabidus is of interest because of its comparatively 
recent introduction into this country from Europe and the possi- 
bilities of it becoming a serious pest. 
Both pests overlap somewhat in distribution, although at the 
present time Cephus py.jnaeus has its strongest hold in territory 
north of regions not yet penotrated by. Trachelus tab idus . We 
believe, moreover, that the many negative records included in 
the report will furnish important data on the dissemination of 
both species. 
