BIOLOGICAL STUDIES OF THE GREEN CLOVER WORM 7 
Three oval, slightly elevated bisetose chitinizations are grouped around it, one 
dorsad, one cephalad, and one ventro-cephalad, all concolorous with surrounding 
tissue except at immediate bases of setse (fig. 8, TI). Mesothorax and meta- 
thorax with one pair of bisetose chitinizations on dorsum, and on latus three 
unisetose and one bisetose chitinizations (fig. 8, Til), and one fine pale seta (2b) 
half way between setae 2a and 3. On each 
of the first six abdominal segments there 
are six pairs of unisetose chitinizations, 
two on dorsum, bearing setae 1 and 2, 
and four on latus, bearing setse 3, 4, 5, and 
6 (fig. 8, AI V) ; the three lateral chitiniza- 
tions, bearing setae 3, 4, and 5, form points 
of a triangle with the cephalic side longest 
and on a line with the spiracles, chitini- 
zation bearing seta 6 close to venter. 
Eighth abdominal segment (fig. 8, VIII) 
with setae 1 and 2 nearly in alignment 
with each other, two setae (4 and 6) caudo- 
ventrad of spiracle, seta 5 more dorsad 
than on the other segments, and setae 7 
and 8 on ventrum; ninth abdominal seg- 
ment (fig. 8, AIX) with setae 1, 2, and 3 
forming nearly an equilateral triangle, 
setae 4 and 6 missing, and setae 7 and 8 
nearly as on the eighth abdominal seg- 
ment; all chitinizations nearly circular, 
slightly elevated, and of the same color 
as the surrounding tissue except for dark 
areas surrounding the immediate bases 
of the setae. Setae moderately long 
and dark. Abdominal spiracles oval, 
white, with dark rims. Body with a dis- 
tinct white lateral stripe through spiracles, 
a narrow whitish subdorsal stripe along outer edge of posterior dorsal chitiniza- 
tions, less distinct than in preceding instar, and the dorsal vessel dark green 
with paler green tissue on either side. 
PREPUPAL STAGE 
The body is considerably shorter than that of the full-grown larva, and in 
natural position remains slightly curved. It is robust with greatest width near 
middle, but tapers rather sharply toward caudal extremity; the head and pro- 
thorax are nearly the same width; the mesothorax is wider and the longest 
Fig. 9. — Pupa of the green clover worm: a, Ven- 
tral view; b, dorsal view, a, Antenna; a 1 to a 10 , 
abdominal segments of pupa; ao, anal opening; 
c r, eremaster; /, front; g, gena; go, genital open- 
ing; lb, labrum; Ip, labial palpi; md, mandible; 
mes, mesothorax; met, metathorax; msl, meso- 
thoracic leg; msp, mesothoracic spiracle; mtl, 
metathoracic leg; mx, maxilla; pi, prothoracic 
leg; pr, prothorax; v, vertex; w, mesothoracic 
wing 
Fig. 10. — Caudal end of female pupa of 
the green clover worm. Enlarged 
Fig. 11. — Caudal end of male pupa of the 
green clover worm. Enlarged 
segment in the body. General color pale green with a dark green middorsal 
stripe, and a similar though slightly broader lateral stripe running on a line 
just dorsad of spiracles. Longitudinal white markings entirely lacking; ocelli 
no longer black but concolorous with face; spiracles transversely oval, white in 
color, edged with brown. Pedal extremities retracted, leaving skin loose. As 
pupation approaches, the body becomes sufficiently contracted to leave the skin 
around the caudal extremity wrinkled. 
