■85- 
Texas 
Texas- 
iexas 
Texas 
General 
statement 
Texas 
CATTLE 
HORU FLY ( Haeraatobia irritans L.) 
F. C. Bishopp (April 23): During March, horn flies "became 
rather abundant in south-e stern Texas, "but their number did not 
materially increase, it actually decreased in seme sections of t>. 
the State during April. This condition may he due to heavy wind 
and rain storms. On this date, the number of flies per animal 
ranges from 10 to 1500, and annoyance is less noticeable in most 
sections than normal for this time of the year. 
STABLE FLY ( Stpmoxys calcitrans L.) 
F. C. Bishopp (April 23): Stable flies have "oeen more or. less 
annoying to stock throughout the winter, and at times during 
March and April, they have become Q.uite troublesome, especially 
on dairy cattle. 
A LOusE ( Linognathus vitul.j L. ) 
F. C. Bishopp (April 23): During February, March, and April 
much complaint came from the cattlemen of western Texas on the- 
infestation of their animals by these lice. Many ranchmen dip- 
ped their herds during February, March, and early April. 
A DWG BEETLE ( Canthon \-aevis Erury) 
D. C. Farman & F. G. Bishopp (April 17): The first activity of 
tumble bugs was observed near Uvalde today. At times this insect 
materially reduces the abundance of horn flies. 
SC3ET7 WORM ( Cochliomyia macellaria Fab.) 
F. 0. Bishopp (April 25): Many screw worm flies came through 
the mild winter successfully, and the attack on livestock began 
exceptionally early this spring. In fact, some cases were re- 
ported during January and February in the southern part of Texas. 
Numerous cases began to appear in the range country of south- 
western Texas in March, and the attack on livestock extended 
farther northward during April. Most stockmen expect an unusually 
bad screw worm year. The fact that the ranges are good, and that 
there has been comparatively light losses of stock on the range, 
are favorable for the stockmen. In several sections of western 
Texas, ranchmen are organizing for systematic trapping of screw 
worm flies. Some cases of screw worm injury to livestock have 
also been reported this spring from New Mexico and California. 
HORSES 
THROAT BOT FLY ( uastrophilus na sai ls L.) 
I. 0. Bishopp (April lo): Throat bot flies have been attacking 
