144 
Journal of Agricultural Research 
Vol. XXIX, No. 3 
green, dorsal longitudinal band, bor¬ 
dered on each side by a broader whitish 
band; under side of body yellowish (or 
greenish yellow), tracheae white show¬ 
ing through the skin. Thoracic legs 
slender and rather long; pale greenish 
yellow with two small, round, black 
spots on the outer side of the tibiae. 
Prolegs (fig. 3, D) slender and long 
stemmed; crochets (36-42) triordinal, 
in a penellipse. Anal fork absent. 
Tubercles and anal and thoracic 
shields of the body color; a single, 
conspicuous oval black spot on each 
side of the thoracic shield, lying back 
of seta lb. Spiracles small, round, but 
very faintly pigmented; on 8th ab¬ 
dominal segment more than twice the 
size of the other abdominal spiracles 
and noticeably larger than those on 
prothorax. Skin smooth, except for 
the primary setae. 
Body setae (fig. 3, E) pale yellow, 
moderately long. Prothorax with only 
two setae on prespiracular shield (4 and 
5); II a a trifle higher than I a ; II b 
markedly higher than I b , nearer to II a 
than II a is to I a ; I b as near (or nearer to) 
I c as I c is to II C , remote from I a ; only 
two punctures distinguishable (y and z), 
puncture y dorsocaudad of I a . Meso¬ 
thorax and metathorax with VI uni- 
setose. Abdominal segments 1 to 8 
with III above the spiracle; III a not 
distinguishable; IV and V approximate 
and on a single chitinization beneath 
the spiracle; seta I longer than II, 
on abdominal segments 1 to 5 somewhat 
higher than II, but on 6th, 7th, and 
8th abdominal segments on about the 
same level, absent on segment 9 of 
abdomen; group VII trisetose on pro¬ 
leg-bearing segments, bisetose on ab¬ 
dominal 7, and unisetose on abdominal 
8 and 9; 9th abdominal segment with 
IV and V united in a single hair closely 
approximate to III; seta VI present 
and very long. 
Head small; pale whitish or greenish 
yellow, faintly mottled with brownish 
yellow. Trophi very slightly pig¬ 
mented. Ocellar pigment defined as 
small black spots under each ocellus. 
Head capsule (fig. 3, A, B) somewhat 
flattened; ovate-orbicular in outline 
viewed from above; as wide as long; 
greatest width slightly before middle 
of head; incision of dorsal hind margin 
about one-fourth the width of the head 
(or a trifle less); distance between dor¬ 
sal extremities of hind margin less than 
one-half the width of the head. Frons 
broad; longer than broad; reaching 
beyond middle of head. Adfrontal 
sutures extending to incision of dorsal 
hind margin. Longitudinal ridge short; 
•considerably less than one-third the 
length of frons. Ocelli six; lenses well 
defined. Epistoma normal. Frontal 
punctures well separated; slightly for¬ 
ward of frontal setae; only distinguish¬ 
able in cleared and prepared mounts of 
the head; distance from frontal seta F 1 
to first adfrontal seta (Adf 1 ) greater 
than between Adf 1 and Adf 2 ; approxi¬ 
mate to beginning of longitudinal 
ridge; puncture Adf a very faint, some¬ 
what nearer to Adf 2 than to Adf 1 . 
Epicranial punctures, seta G 1 , and 
setae of ultraposterior group not dis¬ 
tinguishable. Anterior setae (A 1 , A 2 , 
A 3 ) forming a very obtuse angle lying 
almost in a line with L 1 . Posterior 
setae (P 1 , P 2 ) slightly behind middle of 
head; Powell behind the level of Adf 1 
and a trifle behind that of L 1 ; P 2 well 
behind the level of place of juncture of 
adfrontal ridges. 
Ocellar setae (O 1 , O 2 , O 3 ) well sepa¬ 
rated; O 1 ventrad of ocelli 2 and 3, 
approximate to ocellus 3; O 2 ventrad of 
ocellus 1; O 3 anteroventrad of O 2 , 
remote, farther from O 2 than from O 1 . 
Subocellar setae triangularly grouped. 
Length of full-grown larva 17-19 mm. 
PUPA 
The pupa (fig. 2, A, B; PI. 2, F) is 
smoky brown with intersegmented 
areas of abdomen (especially from ab¬ 
dominal segments 5 to 7) pale yellow; 
smooth, except for a slight rugosity on 
dorsum of 7th segment of abdomen and 
some rather prominent dorsal setae; 
mesothorax and metathorax with a dis¬ 
tinct, prominent, rather large, chiti- 
nized reniform pit on dorsum on each 
side of middle; wings extending to 
ventro-caudal margin of fourth abdomi¬ 
nal segment; cephalic end bluntly 
rounded, tapering from mesothorax, 
vertex distinct, small; labrum, pilifers, 
and maxillary palpi well developed; la¬ 
bial palpi very small; prothoracic and 
mesothoracic legs not extending cepha- 
lad between sculptured eyepiece and 
antennae; maxillae broad and long, ex¬ 
tending nearly the length of the wings, 
having only tips of metathoracic legs 
exposed; femora of prothoracic legs 
clearly exposed; prothoracic legs ex¬ 
tending more than half the wing length; 
mesothoracic and metathoracic legs and 
antennae extending to tips of wings; 
proleg scars clearly visible on abdominal 
segments 5 and 6; mesothoracic spira¬ 
cle discernible, but small and narrow, 
not prominently chitinized; abdominal 
spiracle distinct, not appreciably pro¬ 
duced, small and round; anal and geni¬ 
tal openings slitlike in both sexes; anal 
rise very slight, unarmed; cremaster 
present, prominent, moderately long, 
