1914] Pupe of Ceratocampide and Hemileucide . 285 
first pair of wings; cephalic margins of abdominal segments 
5 to 7 produced into prominent flange-like ridges directed 
cephalad and set with spines; abdominal segments 9 and 10 
with prominent lateral spines; cremaster long, over one-seventh 
the total length of the body, bifurcate at tip. 
This genus includes a single species, Dryocampa rubicunda, 
found east of the Mississippi. 
Dryocampa rubicunda Fabricius. Color dark brown to 
black; exposed surface of head, thorax and appendages finely 
spinose, the abdominal segments both punctate and spinose; 
face parts with an elevated spiny ridge on each side extending 
cephalad from the proximo-lateral angles of the labrum to the 
proximal end of each antenna, bearing two or three prominent 
spines; epicranial area with a prominent laciniate spine on each 
side the meson at the proximal end of each antenna directed 
cephalo-laterad and giving the pupa a horned appearance; 
glazed eye-piece usually one-third or more the entire width, 
the sculptured portion bearing at least one prominent spine; 
labrum six-sided, usually slightly sunken, pointed at distal 
end; maxillae with the greatest width and length approximately 
equal, each half triangular; prothorax with a few slightly 
larger spines on each side the median line; prothoracic spiracles 
with the cephalic margins arcuate; mesothorax with two 
prominent spines along cephalic margin near the meson, a 
large scattered group at base of wing and half way between 
these two groups on each side the largest thoracic spine; 
abdominal segments 1 to 4 with a row of minute spines along 
both cephalic and caudal margins; abdominal segments 5 to 7 
with the margins punctate, produced into flange-like ridges 
directed cephalad and bearing a row of large sharp spines 
occasionally bifid or trifid and about one-third the length of the 
segment, the caudal part of these segments with a distinct 
furrow near the caudal margin separating the cephalic spinose 
portion from a narrow smooth portion, with a row of small 
spines between it and the transverse conjunctiva; eighth 
abdominal segment with a row of large spines dorsally on the 
summit of a median transverse ridge, extending laterad and 
becoming indistinct on the ventral aspect; abdominal segments 
9 to 10 with prominent lateral spines curving caudad; cremaster 
irregularly, longitudinally rugose, bifurcate at tip with the 
points widely divergent. Length 7-8” to 1”; girth less than 
length. 
