EXPERIMENT STATION BULLETINS. 



297 



all is a varnish that remains intact until time for the eggs to hatch, 

 but one brood each year. 



There is 



REMEDIES. 



The fact that the caterpillars pass the night in the nests, gives us an easy 

 method of control. Early in the morning or in the evening, and sometimes in 

 lowery cold weather, they can be burned out without very much trouble. Make 

 a torch, by wiring a bunch of rags on the end of a long pole, soak in kerosene, 

 and ignite. Such a torch will burn out a number of nests without renewing 

 the oil. Hold the torch some distance beneath the nest so that the flames will 

 scorch the larvae and not simply destroy the pest, allowing the larvse to drop to 

 the ground uninjured. 



Fig. 14. — Apple-tree Tent Caterpillar, after Riley, Third Rep. State Entomologist of Mo. 



Paris-green applied in the ordinary way, will kill the larvse. A favorite 

 method, used by boys, is to put a light squib of powder in a shot gun and to 

 shoot at the nest at short range. The nest is usually completely demolished but 

 many leaves are apt to go with it. Much may be done by picking off and de- 

 stroying the egg-masses. 



The Forest Tent-caterpillar or the Army-worm of the Forest. 



disstria.') 



iClisiocampa 



A near relative of the preceding species, is the forest tent-caterpillar, so named 

 because of the close resemblance to the apple-tree species. The nest made by this 

 creature, is rudimentary In the extreme, being difficult to find at all. The egg- 

 masses differ from those of the orchard species, being more squarely cut off at 

 the ends. The larvae very closely resemble their tent-making relatives, but in- 

 stead of a white line down the back these fellows are marked by a longitudinal 

 row of lozenge-shaped spots with a contin,uous blue line on each side of the back, 

 and transverse blue lines at each segment. The moths differ from the apple 

 tree species in that the transverse, oblique band of the front wings is darker 



38 



