j) VAR — AORTH AMERICAN GEOMK'JR J DAK 
'905] 
25 
LIFE HISTORIKS OF NOR TH AMERICAN GFOMETRIDAE.— LVIII. 
BY HARRISON O. DVAR, WASHINGTON, I). C. 
MesoU'uca va.'sjliafa (aienee. 
Klliptical, rounded, normal, the depression marked; all rounded, no flat areas; evenly 
reticulate with broad low lines, hexagonal, finely punctate shagreened all over. Pale waxy 
yellow; size .9 x .6 x .5 mm. 
Stage /. Mead rounded, whitish testaceous, eye black, mouth brown. Pody thin and slender 
but not rapid in motion, becoming rigid erect when disturbed; white, the ends (joints 2-4, 
10-13) yellowish tinged in certain lights from their retraction. No marks; no shields; tubercles 
concolorous, obscure; setae stiff, pale, rather conspicious. 
Stag^ II. Head rounded bilolied, the apex of clypeus depressed, shining light yellow, ocelli 
black; width .5 mm. Body slender, rather elongate, normal, coarsely annulate. Setae rather* 
coarse, white; no shields; tubercles invisible; no marks, food green. 
Stage III. Head round, bilobed, free, lobes full, shining ochraceous luteous, clypeus depres 
sed, ocelli black; width -8mm. Body moderate, green from the food, unmarked, the folded 
incisures whitish; tubercles a little elevated, round, shining, colorless; feet pale; no shields; setae 
short, pale; subventral fold prominent. 
Statue /K- Head rounded, shining, caramel luteous, setae brown, ocelli black; width i.i mm 
Body cylindrical, slender, the central segments well elongated. Translucent green, incisures 
narrowly folded, yellowish; tubercles small, round, white, elevated, distinct. The dorsal vessel 
shows darker and the tracheal line white by transparency. No marks; no shields; thoracic feet 
brown. About joint 9 a broad stigmatal band l)egins and runs to the anal feet. It is also 
slightly indicated on thorax. Setae moderate. 
Stage Head long, bilobed, green, shagreened, the lobes full, pale greenish, the epistoma, 
and antennae whitish with a short white band before the eyes; width 1.74mm. Body moderate, 
elongate, cylindrical, the segments wrinkly annulate, anal feet large, projected outwardly, (ireen, 
anal feet and dorsum of joint 13 shaded in vinous; tubercles elevated, rounded, white like small 
buttons. Very faint longitudial white washed lin^es; dorsal vessel dark green; setae moderately 
long, distinct. Later the head acquired a red flush over the lobes. 
Food plant thimbleberry {Rubus nutkanus); the hatched larvae ate this plant and a wild 
larva was found on it. Larvae from Kaslo, British Columbia. 
