The Bulletin 
40 
Lot Number 
Number of Eggs 
Hatched 
Not Hatched 
Date Laid 
31 
27 
21 
6 
July 14-15 
32 
9 
7 
2 
16-17 
33 
13 
11 
2 
18 
34 
10 
6 
4 
19-20 
35 
11 
9 
2 
21 
36 
6 
2 
4 
22 
Totals_ 
566 
433 
133 
THE LARVA DESCRIPTION 
The larva of the Southern Corn Bill Bug is a fleshy footless grub 
with a yellowish browh head, much larger posteriorly (Figs. 19-22). 
The different molts are practically identical, there being no important 
differences save size. Length from 2 to 11 mm,, depending upon 
the molt; soiled white; head yellowish brown; trophi darker, almost 
black; body fusiform, strongly curved, swelling ventrally from the third 
to the fifth abdominal segments, then recurved and rounding to the 
anal extremity. Head large, hemispherically oblong, longer than 
broad; epicranial suture distinct, continuing as a shallow impressed 
sulcus on the frons: a faintly indicated undulating line either side of 
the epicranial suture starting on the vertex and ending on the frontal 
sutures; frontal sutures distinct sinuate; epicranium with eight hairs 
either side of the epicranial suture arranged as shown in Fig. 23; frons 
with four hairs either side of median line as shown in Fig. 23; four 
shorter hairs on the clypeal margin; antennae rudimentary; clypeus 
free, transverse trapezoidal, sides converging ventrad; labrum smaller, 
semicircular, bearing a row of four long medial, four short submarg¬ 
inal, and eight shorter marginal hairs on the ventral curved margin, 
two prominent curving snlci either side of middle, dividing the labrum 
into three sub-equal halves; mandibles stout, triangular, with two short 
hairs near the base; maxillae stout with three prominent' hairs, cardo 
small, stipes large, elongate, bearing a short palpus with two unequal 
globular joints and a fleshy lobe thickly studded with hairs, which is 
concealed by the labium; labium consisting of a large triangular men- 
tum with a median excavation on the distal part, palpiger triangular 
with a deep median groove, labial palpi equaling the maxillary palpi 
of two joints, ligula triangular rounded; three pairs of prominent hairs 
on the mentum, one pair on the palpiger and two pairs of short stout 
hairs on the outer surface of the ligula. Thoracic segments distinct; 
prothorax longer and broader with a chitenized shield on the dorsum, 
a large oblong spiracle middle of the sides of the prothorax. A pair 
of rather prominent hairs dorsally with two smaller ones between, nearer 
the median line and in front of these two pairs near the anterior border. 
