1366 Roger C. SmMitH 
was high, but five larvae overwintered successfully. In the summer of 
1921, larvae of this species were taken during the latter part of June, 
early July, September, and October. Adults were taken only once, on 
August 19, 1921, when they were beaten from willows. 
Egg.—All eggs of this species seen were stalked. Average length of five 
stalks, 4.9mm. Egg elongate ellipsoidal, light yellowish green in color. Length, 
0.8 mm.; greatest width, 0.46 mm. Taken on trunk of maple, June 16, 1921. 
First-instar larva—Head with two pairs of narrow brown bands dorsally; 
inner pair very narrow, arising at base of mandibles and extending slightly less 
than half the length of head; outer pair arising at base of antennae, extend- 
ing posteriorly to prothorax, and doubling anteriorly to eyes; jaws very dark, 
almost black. Body predominately gray; internal organs visible, causing 
-lighter-appearing areas over body; two setae each from all thoracic and 
abdominal tubercles except meso- and metathoracic, which bear three each; a 
row of small hooked setae on dorsum, on each segment from metathoracic to 
seventh abdominal inclusive. Larva normally carries a small packet of debris, 
though the usual long stalk of the thoracic tubercles and arched abdomen are 
not so pronounced as in other instars. Total length, 3.5 mm.; width at meta- 
thorax, 0.88 mm.; total length of head and jaws, 0.66 mm. 
Second-instar larva.—Differs from third instar chiefly in size. Head and 
body markings the same as in third instar. Packet present in this instar also. 
Third-instar larva (fig. 162)—Head 
predominately smoky gray dorsally, with 
three pairs of black bands; inner pair 
converging behind, almost solid black be- 
tween them or very dark except for a 
narrow gray area in middle line; middle 
R\\ SN { pair arising between base of jaws and 
LEW Zs Tp antennae and extending to prothorax, 
\, SSS 7 WL, broadening behind and doubling back 
SQ YZ 5 to eyes, forming the third pair; jaws 
—E (ee amber-colored; antennae almost black, 
distinctly annulated. Body grayish to 
white in color, without black markings 
except along some sutures; prothoracic 
depressions prominent; lateral thoracic 
om Pee, tubercles long and slender; prothoracic 
tubercles extending forward, setae long, 
stout, black, with prominent black bases; 
mesothoracic and metathoracic tuber- 
cles smaller and shorter than prothoracic, 
setae black. Legs very dark, almost 
black. Abdomen arched, bearing a pack- 
et of plant fibers, spider webbing, insect 
ee molts, and similar materials; from one 
ETN to three more or less complete rows of 
v microscopic setae with recurved tip on 
i each segment from the metathoracic to 
Fic. 162. FULLY GROWN THIRD-INSTAR the seventh abdominal segment inclusive; 
LARVA OF CHRYSOPA COCKERELLI,WITH these setae longest on first, fifth, and 
PACKET IN POSITION. DORSAL VIEW, sixth abdominal segments. Length, 6 
x 10 mm.; greatest width, 3 mm. 
