BULLETIN 1336, U. S. DEPARTMENT OF AGRICULTURE 
the female antennae; and the frenulum on the male wings consists of 
one long, strong spine, as compared with two small, diverging spines 
on the female. (See fig. 3.) 
The technical description of the adult by Smith (11) follows: 
Fig. 2— Adult of the green clover worm. Enlarged 
Ground color a dark purplish or smoky brown. Head and thorax concolorous. 
Abdomen more smoky, like the secondaries. Primaries dusky to the transverse 
posterior line, then with bluish powderings, which scarcely relieve the somber 
tint in the male, but are quite contrasting in the female. In the latter sex the 
inferior half of the median space often becomes shaded with yellowish red-brown, 
sometimes quite contrastingly. Transverse anterior line red-brown, preceded by 
pale in the best marked specimens, outwardly 
bent, with three long outward angulations, 
rarely complete, and in the male quite frequent- 
ly entirely obsolete. Transverse posterior line 
black or brown, outwardly bent over the cell 
and almost rigid beneath. The line is marked 
through the lower part of its course by ele- 
vated scales, which are most prominent on the 
inner margin. Subterminal line interrupted, 
pale, preceded by black spots, rather evenly 
bisinuate, often quite contrasting in the female, 
and as inconspicuous in the male. A brown 
terminal line, which is rarely interrupted, 
preceded by undefined bluish lunules in the 
interspaces. In the male the apex ^ is blue 
powdered, the terminal space else quite even. 
In the female the apical patch is more contrast- 
ing, inferiorly limited by a blackish streak, the 
terminal space being irregularly and variably 
mottled with bluish brown and black. Opposite 
the hind angle is a longitudinal black mark, 
which crosses the subterminal line. Usually a 
narrow black line connects the median lines in 
the submedian interspace, and another connects the ordinary spots, which are 
much reduced and marked by black elevated scales. The basal space is also 
sometimes blue powdered or inferiorly brown. In the male the ordinary spots 
are sometimes hardly evident. Secondaries deep smoky-brown, varying a little 
in tinge toward brown or black. Beneath, uniformly brown or blackish; the 
secondaries with a more or less evident discal spot. 
Expanse of wings, 27 to 34 mm.— 1.10 to 1.35 inches. 
Fig. 3. — Frenulum of moth of green clover 
worm: Left, male; right, female. Much 
enlarged 
