IXSECTS AFFECTING PARK AND WOODLAND TREES 



i6g 



length, head yellowish and body a variable liL,dit green. The mouth parts 



are distinctly brown, the mandibles being tridentate with their apices dark 



brown ; e)es black. Body tubercles very much flattened, semitransparent, 



two subdorsal and a lateral one upon each 



abdominal segment, each bearing a slender, 



nearly colorless hair. Tips of true legs dark 



brown, well developed prolegs on the third 



to sixth and loth abdominal segments. The 



tube of this larva was first described by 



Clemens under the name ofCastastega 



aceriella. It was later referred by Dr 



Dyar to Clemens's species originally named 



H e cl y a s i g n a t a n a . Clemens's descrip- ^' 



tion of the adult follows : 



Fore wings white, marked with dark , 

 brown. The basal patch is distinct, dark 

 brown and consists of three or four angu- 

 lated lines, the exterior being the broadest. 

 The dorsal patch is white, extended to the 

 costa, contracted in the middle of the wing 

 and is traversed by a few broken, indistinct, 

 brownish lines. The central fascia is dark 

 brown, rather indistinct, and contains three 

 black dashes opposite the ocelloid patch, Fig 

 which is white and rather Indistinct. The tana i.. m..pieie 



costa is marked with dark brown streaks and near the tip are three or 

 four geminated white spots, the dark brown streak which separates the 

 two nearest the tip of the wing is extended along the hinder margin to 

 the ocelloid patch. At the extreme tip is a black semicircle in the cilia, 

 upon a dark brown ground. Hind wings dark fuscous. 



Remedial measures. Arsenical poisons applied to the underside of the 

 leaves should check this species readily. 



