CLOVER-LEAF WEEVIL. 
be brown or blackish [posterior segments yellowish]; the surface of the body much 
rougher in this stage than in others, the triangular points of the cuticle standing out 
prominently; tubercles [fig. 5] on thoracic segments below very strong and the hairs 
more prominent than in earlier stages. Length 8 to 14 mm. 
Cocoon [fig. 6]: * * * Oval, 9-10 mm. long and 6.5 to 7 mm. wide. [A fine net- 
work of coarse threads which are light straw color when spun and brown after aging.] 
Pupa: When first formed with yellow-green head [lighter colored antennas, legs 
and wing-pads] * * *. Abdomen dark green with a distinct pale dorsal line 
that extends onto prothorax * * *. Frontal row 
of hairs rather distant from margin; central pairs 
close together, three following pairs form a curved 
line ending near the posterior outer edge; a few 
hairs on remainder of thorax; transverse rows of 
blunt setae on each dorsal abdominal segment; 
Fig. 5. — Full-grown larva of the clover- 
leaf weevil, lateral view. Much en- 
larged. 
Fig. 6.— Cocoon of the clover-leaf weevil sur- 
rounded by leaves of clover plant. En- 
larged. 
haii's on beak rather short and thin; those on anal segment moderately long, stout 
and dark. [The pigmentation of the eyes, mandibles, and leg joints occurs at later 
dates in order named.] Length 5.5-7 mm. Width 3.5-4.5 mm. 
The measurements of the larva are given in tabular form, as fol- 
lows: 
Table I. — Larval measurements (mm.) of Hypera punctata. 
First instar. 
Second instar. 
Number of specimens averaged. 
Width 
of 
head. 
Length of body. 
Width 
of 
head. 
Length of body. 
Mini- 
mum. 
Maxi- 
mum. 
Aver- 
age. 
Mini- 
mum. 
Maxi- 
mum. 
Aver- 
age. 
24 
0.2 
1.9 
3.4 
2.7 
20 
0.55 
1.8 
5.9 
3.8 
Third instar. 
Fourth instar. 
Number of specimens averaged. 
Width 
of 
head. 
Length of body. 
Width 
of 
head. 
Length of body. 
Mini- 
mum. 
Maxi- 
mum. 
Aver- 
age. 
Mini- 
mum. 
Maxi- 
mum. 
Aver- 
age. 
18 
0.8 
3.8 
9.5 
6.3 
19 
1.2 
5.1 
13.1 
9 3 
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