4 BULLETIN 254, U. S. DEPARTMENT OF AGRICULTURE. 
scutel greenish-yellow; hemelytra green; nerviires paler; exterior and apical margins 
pale yellow or whitish; a pale yellowish, capillary, oblique line from the humerus 
to the inner margin; tergum black-purple, lateral edge and tip yellow. 
Length to the tip of the hemelytra over three-tenths of an inch. 
A common species. 
A simple description which will enable the farmer or uninitiated to 
recognize the species in its several stages is given below : 
ADULTS. 
. (Fig. 1, a-f.) 
Color bright grass-green, head very sharply pointed, of a slightly 
lighter green than body. Face marked with oblique lines. Males 
noticeably smaller than females, and with black venter. Venter of 
female lighter than wing covers. 
EGGS. 
(Fig. i, h.) 
The eggs are white; when first deposited they are rather trans- 
parent, later becoming opaque. They are irregularly elongate in 
form, comparatively blunt at both ends, and about three times as 
long as wide. The head end of the egg is somewhat bulging. Eyes 
of the immature nymph show through the eggshell as red spots a 
few days before hatching takes place. Table I, taken from the notes 
of Mr. V. L. Wildermuth, an assistant of the Bureau of Entomology, 
gives the egg measurements. 
Table I. — Measurements of eggs of the sharp-headed grain leaf hopper. 
Egg. Length. 
Maximum 
width. 
Minimum 
width. 
1 
Mm. 
1.40 
1.25 
1.40 
Mm. 
0.35 
.40 
.40 
Mm. 
0.15 
.10 
.125 
2 
3... 
Average 
1.35 
.38 
.125 
NYMPHS. 
(Fig. 1, g-j, I.) 
In general the nymphs resemble adults in shape and color, the most 
noticeable difference being hi absence of wings and wing covers, and 
in size. 
First-instor nymplis (fig. 1, I). — Color light yellow-green, uniform 
but somewhat darker on dorsal side of last two abdominal segments. 
Legs a cottony white. One dorsal stripe of lighter yellow running 
