18 
Psyche 
[March 
egg form the micropyle rosette. The end of the egg bearing 
the micropyle is acute as compared with the base. 
First Instar 
Head height .4 mm. ; head width .25 mm. Head entirely 
colorless and transparent except for the black pigment of 
the ocelli. Bears a few long transparent hairs. Surface 
microscopically rugose. Body 4 mm. long. Light greenish 
yellow. Green from gut clearly visible. Numerous long 
colorless hairs. Body surface microscopically rugose. 
Second Instar 
Head height .7 mm. ; head width .5 mm. Body length 6 
mm. Very similar to previous instar. Surface of head and 
body rougher. Hairs shorter and more numerous. Color 
same. Some individuals darker yellow. 
Third Instar 
Head height 1.0 mm. ; head width .8 mm. Body 9 to 11 
mm. long. Very similar to preceding instar. Hairs on head 
and body still shorter and more numerous. 
Fourth Instar 
Head height 2.0 mm. ; head width 1.7 mm. Yellowish 
green. Surface rugose. Body length 12 to 20 mm. All 
parts of the body above the stigmatal line are pea green. 
There may or may not be many indistinct pink transverse 
lines. The whole dorsal area of the body is studded with 
minute black hairs arising from conspicuous tubercles. The 
proportion of black to yellowish tubercles varies consider- 
ably but in all specimens there are exceptionally large black 
and occasionally iridescent tubercles just above the stig- 
matal line. Stigmatal line and spiracles yellow. Substig- 
matal areas light yellow with yellowish to colorless hairs 
arising from tubercles of similar color. The hairs on the 
head arise from the same kind of tubercles. 
Fifth Instar 
Head height 3.5 mm. ; head width 3.0 mm. Yellowish 
green. Covered with many tubercles of the same color from 
which arise concolorous hairs. Edges of mandibles fuscous. 
Black pigment of ocelli visible. Body 35 mm. long. Spiracles 
cream to white in color. Dorsal areas of body clear light 
