REPORT OP THE STATE ENTOMOLOGIST 1903 115 



It will be seen by the above, that there is some indication of 

 periodicity in the captures, though nothing but what might be 

 caused by more or less favorable weather or the relative abund- 

 ance of the insects. There is certainly no indication of more than 

 one brood. It will be noticed that this species flies most 

 abundantly from about the middle to the last of September, and 

 may be found on the wing till nearly the middle of October. 



Hosts. Very little is known regarding the species on which this 

 insect preys. The record is so meager that one can only surmise 

 as to the economic value of this parasite. It has been reared from 

 Diacrisia virginica Fabr. Feltia gladiaria 

 Morrison, and Glaea inulta Grote. Dr Howard has re- 

 corded this species as possibly a parasite infesting N o t o 1 o- 

 phus leucostigma Abb. & Sin. to a limited extent. This 

 biief record suggests that this species may be parasitic on some of 

 the arctians and noctuids, and while the former are not of much 

 economic importance, such is not true of many of the latter, and 

 in the control of these, this species may play an important part. 



Description. Fulvo-ferruginous, stigma well developed, medium 

 size to rather large; length of body about 19 mm; wing spread 

 about 30 mm. 



Head medium, antennae as long or longer than the body; 

 eyes and ocelli black; lateral ocelli a little distant from the 

 eyes; dorsal and dorsocaudal aspect of head yellowish; man- 

 dibles bidentate and tipped with black. Mesothorax convex; 

 scutellum and postscutellum prominent; metathorax with incon- 

 stant raised lines. Wings hyaline with a glabrous elliptic spot 

 near the stigma in the cubitodiscoidal cell ; cubitodiscoidal nerv- 

 ure appendiculate [pl.2, fig.3], legs honey yellow. Abdomen 

 rather strongly compressed, frequently a little darker at the ex- 

 tremity; male claspers subtriangular, obliquely truncate, and 

 acute posteriorly. 



Described from numerous specimens. 



There are some very small representatives of this species from 

 the Adirondack mountains that approach closely in size and gen- 

 eral appearance the following form. They may be separated, 

 however, by the relatively shorter, more compressed abdomen and 

 by the thorax being as dark as other portions of the body. 



Distribution. This insect has a wide distribution over the 

 United States and the southern portion of Canada, though it has 



