INSECT ENEMIES OF EASTERN FORESTS 101 
tive to farm crops. The ground-inhabiting forms are usually wingless 
and gray or brown. The most important member of the family is the 
well-known Mormon cricket (Anabrus simplex Hald.) which when 
abundant is very destructive to forage and cultivated crops in the West. 
The family isa large one. Many 
of its members inhabit trees and 
shrubs but are never numerous 
enough to cause injury, and only a 
few of the more common ones will 
be mentioned. 
The species of bush katydids 
treated by Blatchley (48) as oc- 
curring in the eastern part of the 
United States are typically arbo- 
real in their habits, pale green, and 
of medium size. The vertex is 
compressed and hollowed out on 
both sides for the better accom- 
modation of the eyes. The teg- 
mina are long and narrow and only 
a little or shghtly broader at the 
middle than at the apex. The 
females lay their eggs in the edges 
of the leaves between the upper 
and lower epidermis. 
The most widely distributed and 
abundant species is the forktailed 
bush katydid (Scudderia furcata 
(Brun.)). It gets its name from 
the forked appendages at the 
tip of the abdomen of the male. 
S, texensis (Sauss. & Pictet ) is also 
a common form but is less re- 
stricted to trees than are the 
others. S. pistil/ata (Brun.) is an 
arboreal form found around the 
Ficure 16.—Katydid (Cyrtophillus 
edges of lakes and swampy places perspicillatus L.), vesting on a 
on bushes, tall herbs, and grasses. branch. (Courtesy Conn. Agr. Expt. 
S. curvicauda (Deg.) is commonly Sta.) 
found on oak. | 
Three species of round-headed katycids, listed by Blatchley (48) 
as occurring in the eastern part of the United States, differ from 
Scudderia in having the vertex rounded. They are typically pale 
green, but some specimens may be pink. They lay their eggs in the 
soll. Amblycorpha oblongifolia (Deg.), the most common species, 
occurs on shrubs and weeds along edges of thickets and on fence rows, 
especially in damp localities. A. rotundifolia (Scudd.) is more ter- 
restrial in habits and is common except in the Southern States. A. 
uhleri Stol is mainly southern in range. 
Microcentrum rhombifolium (Sauss.) is 25 to 35 mm. long, leaf 
green, and truly arboreal. It is widely distributed in the East. Its 
eggs are grayish brown, long, oval, and very flat, 5.5 mm. long and 
3mm. wide. They are laid on sides of twigs in double rows, those in 
