158 NEW YORK STATE MUSEUM 



wick Me. Dr J. A. Lintner states that he has received this species on 

 maple from Camden N. J., and Dr J. B. Smith adds linden to this list, 

 thouijh he states that the species usually occurs in New Jersey on willow. 



Parasites. This large species has a number of natural enemies in the 

 Western States at least, though they appear to be somewhat scarce in the 

 East. Messrs Orcutt and Aldrich record rearing the following parasites 

 from this insect : D p h e 1 t e s g 1 a u c o p t e r u s Linn., which they state to 

 •be by far the most important jjarasite since it destroyed a large lot of the 

 sawflies under observation. Eight or 10 examples of C r y p t u s n u n c i u s 

 Say were found in one cocoon by these gentlemen and about 20 specimens 

 of Limneria f e r r u g i n e i p e s Ashm., were obtained from smaller 

 cocoons inside those of Cimbex. M e s o c h o r u s m e 1 1 e u s Cress. v,'as 

 reared in small numbers from a cocoon from Egan S. D., and two specimens 

 of S a r c o p h a g a c i m b i c i s Towns, were bred from this sawfly Three 

 small flies, Phora cimbicis Aid., P. m i n u t a Aid., and P. setacea 

 Aid., were also obtained from cocoons, but these small flies in all probability 

 are not parasites and live on decaying vegetable matter. 



Remedial measures. This species can easily be controlled by arsenical 

 poisons wherever they can be employed to advantage. Professor Bruner 

 also advises hand picking, since the large size of the larvae and their habit 

 of dropping at the least disturbance would prove of advantage. It is not 

 at all impossible that in cases where they were excessively abundant, it 

 might pay to destroy the cocoon collected at the base of the trees. 



Bibliography 

 1885 Riley, C. V. U. S. Dep't Agric. Rep't 1884. p. 334-36 

 1890 Packard, A. S. U. S. Ent. Com. 5th Rep t, p. 237, 474, 584-S7, 633 



Spiny elm caterpillar 



Envaucssa antiopa Linn. 

 Large black red marked spiny caterpillars about 2 inches long may be frequently seen 

 in June defoliating the terminal branches of elm, willow, poplar and several other trees. 



The depredations of this insect attract considerable attention from time 

 to time. It IS common in the butterfly form, though its connection with the 



