INSECT ENEMIES OF EASTERN FORESTS Papayl 
furniture. It is frequently shipped to the Eastern States. It is espe- 
cially injurious to thick veneer plyboard, attacking the center soft- 
woods, like basswood. Such veneer stock frequently becomes infested 
while in storage prior to being made into furniture. P. (Heter- 
arthron) femorals (I.) has been reared from mesquite and 
Casuarina. 
The lesser grain 
borer (Phizopertha 
dominica (F.)) is a cos- 
mopolitan species found 
in this country attack- 
ing oak, hickory, and 
ash. 
Scobicia — bidentata 
(Horn) is a common 
species in the Middle 
West in freshly cut 
wood and lumber of 
hickory, elm, hackberry, 
oak, chestnut, and sas- 
safras. 
Stephanopachys sub- 
striatus (Payk.) is a 
very common. species, 
probably cosmopolitan, 
working chiefly beneath 
FicurE 49.—Cross section of persimmon low show- 
the bark of pine and ing the wood destroyed by grubs of the powder- 
other coniferous woods. post beetle Vylobiops basilaris. (Natural size.) 
Occasionally it infests 
oak tan bark, causing considerable damage. S. densus Lec., S. cribra- 
tus Lec., S. punctatus (Say), and S. rugosus (Oliv.) breed in pine. 
Xylobiops basilaris (Say) is probably the most common bostrichid 
of the East, attacking practically all freshly cut and partially seasoned 
hardwood, and frequently is very injurious to furniture and rustic 
work. It has been found attacking partially seasoned pecan lumber 
in the South. 
SPECIES OF LYCTIDAE 
The Lyctus Powder-Post Beetles 
The two most destructive species of Lyctus in the Eastern States 
are L. planicollis Lec. and L. parallelopipedus (Melsh.). The species 
L. brunneus (Stephens) and ZL. linearis (Goeze) cause considerable 
damage at times. Lyctus spp. are all small, elongate, slender, dark- 
brown to black beetles, ranging in length from 2.5 to5 mm. All but 
L. parallelopipedus are cosmopolitan. These beetles are, from an 
economic standpoint, the most important insects in this group of 
families. Annually, they bring about the loss of thousands of feet 
of seasoned lumber and destroy large stocks of tool handles, gun stocks, 
and other manufactured materials. They attack the sapwood of sev- 
eral large-pored hardwoods, including ash, hickory, oak, wainut, 
locust, and cherry ; and also some of the woods with smaller pores, such 
as sweet birch, poplar, and red gum. 
