OF WASHINGTON, VOLUME XI,1909. 171 



DESCRIPTION OF ANOTHER UNIDENTIFIED NOTO- 



DONTIAN LARVA. 



[Lepidoptera, Notodontidse.] 

 BY HARRISON G. DYAR. 



This larva is supposed to be that of Hyparpa.r pcrophoroidcs 

 Strecker, but no adults have been bred. Two specimens were 

 given to Mr. S. C. Brimley at Raleigh, North Carolina, by 

 a negro who had found them. Mr. Brimley inflated the larvae 

 and presented one to the National Museum, from which this 

 description has been made. 



Larva. Head elliptical, higher than wide, distinctly excei-din.u- joint 

 2, flattened before and on the sides, becoming thin at the vertex, 

 which is shallowly notched; heavily reticulated and mottled with red- 

 brown, so that the greenish ground color appears only upon the 

 clypeus, along median suture, and in a stripe extending upward from 

 the ocelli. Mandibles green, brown on the sides and tip. Width. 

 3 mm. Body cylindrical, somewhat compressed at the sides: joints 

 2 to 4 rise gradually dorsally; joint 5 is produced into a high erect 

 horn, as high as the diameter of the body, bearing tubercles i, which 

 are very large, smooth, brown cones, and form a bifurcate tip to the 

 horn. Joint 12 very slightly enlarged dorsally, its tubercles i some- 

 what hypertrophied, forming low cones, well separated dorsally. 

 Tubercles / on all the joints slightly enlarged and chitinized with 

 large dark setae, the other tubercles small or invisible, but many of 

 the setae large and dark. Sides of the thorax green, the color extend- 

 ing narrowly upon joint 5 and on the anterior lateral base of the 

 horn ; a dorsal red-brown stripe, narrowing regularly posteriorly, 

 edged with whitish and dotted and streaked with this color ; cervical 

 shield formed of slight subdorsal elevation contained in the red-brown 

 band and cut by green anteriorly. Subventral region of the thorax 

 dotted with brown, the thoracic feet brown. Body green, densrh 

 mottled with red-brown in confluent streaks, leaving green markings 

 in a somewhat complicated pattern, as follows : A ring around thr 

 horn just below its tip; oblique, ill-defined, subdorsal streaks on 

 joints 5 and 6, cut by a geminate linear brown dorsal line; on joint 7 the 

 streak is pronounced, beginning at the dorsal line and running to the 

 foot of joint 8, edged above by a heavy brown line that passes over 

 onto joint 8 on the level of tubercle //;', where it loops up sharply 

 obliquely to enclose tubercle /, and then down again, the included 

 finger-shaped marking being whitish green; this brown line contimu > 

 along joints 9 and 10 on the level of tubercle Hi, where it is lost; feet 

 and subventral areas of joints 6 and 10 heavily brown mottled, of 

 joints 7 and 8 very slightly so; a green subdorsal oblique line, the pair 



