reddish-brown elytra, and is from 2.1 to 3 mm. long. Logging 
slash and the larger limbs and trunks are especially attractive 
for breeding purposes. The galleries, larval, and adult feeding 
habits are similar to those of the eastern juniper bark beetle. 
Because it apparently does not attack and kill living trees, the 
species is of minor importance. 
The other three species of Phloeosinus occurring in eastern 
America are: (1) P, canadensis Swaine—on eastern red cedar, 
arborvitae, and Atlantic-white cedar (in eastern Canada and 
from Maine to the Lake States) ; (2) P. pint Swaine—on various 
pines (in the Lake States and southern Canada); and (3) P. 
texanus Blackman—on Mexican juniper (in Texas). 
The genus Leperisinus Reitter contains a number of species 
which breed by preference in various species of ash and are com- 
monly known as ash bark beetles. The adults differ from most 
other bark beetles in having variegated coloration, the markings 
being produced by bands or spots of light colored scales alternat- 
ing with areas of dark scales. The body is rather stout, and the 
elytra gradually descend behind; the antenna has a seven-jointed 
funicle, with the club elongate, fusiform, and compressed. Favor- 
ite breeding material consists of recently cut or broken trees; 
however, living trees weakened by mechanical injury, disease, or 
fire may be attacked also. Parasites and predators, especially the 
braconid, Coeloides scolytivorus (Cresson), and the clerid, Hno- 
clerus quadriguttatus, provide a considerable degree of control 
at times. : 
Leperisinus aculeatus (Say), the eastern ash bark beetle, is the 
most common eastern species. It occurs throughout the eastern 
UiLvelas 
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COURTESY OF DUKE UNIV. SCH. OF FOREST. 
FIGURE 91.—Egg galleries and lar- 
val mines of Phloeosinus denta- 
tus, the eastern juniper bark 
beetle, on trunk of red cedar. 
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