1346 Roger C. SmMitH 
and metathorax very similar; first subsegment of mesothorax entirely grayish, 
less commonly with slight reddish areas on each side of dorsal vessel; first 
subsegment of metathorax very small, entirely gray except a small white spot 
on each side of dorsal vessel; second subsegment of each of similar color pattern; 
tubercles entirely white to light grayish; on each side of dorsal vessel a white 
area. First segment of abdomen rounded at sides, not bearing tubercles; 
lateral tubercles on second segment prominent, dark brownish black; on 
segments 3 to 7 inclusive, lateral tubercles white, with a small, reddish brown, 
elongate spot on upper side of each stalk; setae and their bases black; outer 
dorsal tubercles bearing two setae each, the inner pair one each; just in front 
of outer pair of dorsal tubercles, a prominent reddish brown to flesh-colored 
spot. Total length from tail to tips of mandibles, 4.8 mm.; width at meta- 
thorax, 1.8 mm.; length of mandibles, 0.53 mm.; width of head, 0.6 mm.; length 
of head, 0.8 mm. 
Third-instar larva.—General coloration and form very similar to that of 
second instar. Dorsal head pattern distinctive of instar. Head grayish, with 
three large, distinct, black spots on dorsum; mandibles amber-colored; antennae 
dark. Legs dark near joints. First subsegment of prothorax having grayish 
area in median line; base of first pair of tubercles reddish brown; second and 
third lateral tubercles yellowish, bearing fifteen to twenty setae each; a large red- 
dish brown patch near base of stalk on anterior side of each; an irregular reddish 
brown area on each segment from base of stalks to yellow border of dorsal 
vessel. First pair of lateral abdominal tubercles lacking; second pair brownish 
black, specific; other tubercles reddish brown, but with their bases yellow, 
forming an irregular yellow border for the abdomen on each side; reddish 
brown area extending forward in front of each abdominal tubercle, reaching 
yellow border of vessel; a yellow area reaching this reddish area just in front 
of it. Highth abdominal segment yellowish in center, borders pale; ninth 
segment with brown area in front; tenth segment nearly wholly brown. 
Length, 9 mm.; width at metathorax, 2 mm. 
Pupa.— (The larva usually spins a pure white silken cocoon, but it may fail 
to do this.) Appearance of cocoon papery, with straggling threads issuing. 
Length of cocoon, 3.4 to 3.6 mm.; width, 2.7 to 2.9 mm. (For characters of 
pupa, see head characters of adult). 
Adult.—Face pale yellowish; two broad loops of shining black under both 
antennae; median prong of color ending between antennae; a prominent loonv 
of black near each eye, joining sub-antennal loops; a red or reddish yellow 
triangle above, with four occipital dots above this, these dots often connected; 
occiput distinctly yellow; basal joint of antennae and antennal areas of head 
gray to yellowish; second joint of antennae with black ring; remainder of 
antennae very light brown; clypeus reddish, with black dots at sides; labrum 
reddish; palpi broadly banded with black. Two prominent black spots at 
outer anterior margins of prothorax; eight small black dots on dorsum of 
prothorax behind these, often indistinct. Thorax and abdomen light green, 
generally unmarked except by darkened areas of viscera. Wings hyaline, 
varying from having all veins and veinlets green to a considerable degree of 
darkening; tips rounded. Length from head to tips of wings, 15 to 20 mm. 
