~SUBFAMILY TETTIGINAE 15 
pronotum always more or less tectiform, advanced anteriorly above 
the occiput, the front margin rounded, obtuse-angulate or terminating 
in a small cusp, which is directed forward between the eyes; the pos- 
terior process of the pronotum is acute and variable in length; the 
elytra are more or less rounded apically and normally marked with a 
small light spot near the tip; posterior tibiae are enlarged toward the 
tip; the carinae multispinose; first joint of posterior tibiae scarcely 
longer than, and often only equal to, the last. We have only one genus 
represented in our fauna. 
TETTIGIDEA Scudd. 
Vertex distinctly wider than, or at least equal to, one of the eyes 
in width, the anterior lateral carinae terminating obliquely or rounded, 
middle carinae more or less elevated. Frontal costa compressed and 
advanced before the eyes and coalescent above with the median carina 
of the vertex. Antennae relatively short and made up of 22 joints. 
The dorsum of the pronotum is scabrous, finely granulate, and usually 
more or less rugose; its sides sloping downward between the shoul- 
ders, the posterior portion flattened and attenuate or abbreviate; the 
anterior margin more or less projecting forward upon the head and, 
in our species, rounded or obtuse-angulate. We have but one species, 
although, as is common in this subfamily, it is found in two forms. 
Tettigidea parvipennis Morse 
Body moderately robust; vertex about twice the width of one of 
the eyes (very distinctly so in the male) and projecting before the 
eyes; from the crown there projects a small lobule upon each side 
covering a portion of the upper, inner border of each eye; dorsum of 
pronotum distinctly tectiform anteriorly and flattened posteriorly, 
where it is normally extended and attenuate. This insect is, within 
our limits, commonly found in the long-winged or extended form, to 
which the varietal name pennata is sometimes applied. It appears to 
be common throughout the State, though rather scarcer in the north- 
ern part. In spring and fall it often congregates in great numbers 
and we have taken it in great numbers by “sweeping” through sandy 
fields of young grain in spring. During the winter it hibernates under 
various covers. The short-winged or typical form is found associated 
with the long-winged but is commonly much less abundant. Rather 
peculiarly, with us, the short-winged form appears much darker in 
tint than its relative and often bears very distinct and striking whitish 
markings on dorsum, cheeks, and femora. 
