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INSECTS ATTACKING MAN AND 
D M E • S T I C ANIMALS 
MAN 
HOUSE FLY ( Muse a domestica L».) 
L. Has eman (March 25): The house fly has begun to appear 
in small numbers at Columbia. 
CLUSTER FLY ( Pollenia rudis Fab.) 
F* C. Bishopp (February 22-27): Reports of household infesta- 
tion of the cluster fly have come in from Ithaca and Pittsford. 
According to the statement received from the latter locality 
they are annoying on the second floor as '.veil as in the attic 
on any warm day. 
HORSE 
NOSE BOTFLY (Ga strophilus haemorrhoi dalis L. ) 
F. C» Bishopp and R. W. 'Jells (February 11): Nose flies are 
reported to be very annoying to horses in this- locality (Urbana). 
Apparently they have been present for about 5 years. 
CATTLE 
COMMON CATTLE GRUB ( Hypodema lineatuc DerVill.) 
H. S. Peters (February 16): At Pittsburg, four herds with a 
total of 207 cows showed an average of 0.35 grub per animal. 
No larvae in the fifth ins tar were found. 
H. S, Peters (February 12): Fifty cattle at Columbus and 
128 at Lancaster showed no infestation. 
H. S. Peters (February 8): At Terre Haute,, a total of 174 
cattle (5 herds) showed an average of 1.5 grub per animal. One 
of these herds of 66 head was uninfested, while another herd 
of 27 cows had 163 grubs. Nearly all of the larvae were in the 
fourth and young fifth instars. 
H. S, Peters (February 7): At Cairo 44 cows were examined 
and an average of 0.63 grubs found. At Effingham, 29 head had 
an average of 0.21 per animal. No mature larvae were found in 
either locality, the oldest being very young ones of the fifth 
instar. 
F« C. Bishopp and R. Y7. Wells (February 10): Several herds of 
