Notodontidae 



(2) Apatelodes angelica Grote, Plate XL, Fig. 21, $ . 



Syn. hyalinopuncta Packard. 



The distribution of this species is the same as that of the 

 preceding. It is rather common in western Pennsylvania. 



Genus MELALOPHA Hiibner 



Six species and a number of subspecies have been recognized 

 as belonging to this genus and are found in the region with which 

 this book deals. Of four of these we give figures. 



(1) Melalopha apicalis Walker, Plate XL, Fig. 18, $ . 



Syn. vau Fitch; indentata Packard. 



The figure upon our plate, cited above, represents the form 

 of the species to which Grote & Robinson applied the name 

 ornata and of which the name incarcerata Boisduval is a syno- 

 nym. The insect is widely distributed all over the United States 



(2) Melalopha inclusa Hubner, Plate XL, Fig. 19, ? . 

 Syn. americana Harris. 



The insect is very widely distributed over the Appalachian sub- 

 region. The larva feeds upon the leaves of various species of 

 the genus Populus. 



(3) Melalopha strigosa Grote, Plate XL, Fig. 17, $ . 



The habitat of this species is the northern portion of the Appa- 

 lachian subregion. 



(4) Melalopha albosigma Fitch, Plate XL, Fig. 16, $ . 



Widely distributed over the United States. Easily discrimi- 

 nated from the other species by the broad brown shade on the 

 apical half of the outer margin of the primaries, succeeded near 

 the costa by a distinct s-shaped white line. 



Genus DATANA Walker 



Thirteen species which are properly referred to this genus are 

 found within our limits. Of these we give figures of the four 

 which are most commonly found. 



(1) Datana ministra Drury, Plate I, Fig. 13, larva; Plate XL, 



p <g- 11, 3. 



This is a very common species, found throughout the Appa- 

 lachian subregion. The larvae are gregarious and may be found 

 in great masses upon the leaves of the walnut and allied trees in 

 the latter part of August and early September. 



(2) Datana angusi Grote & Robinson, Plate XL, Fig. 12, $. 



293 



