oP * 
INSECTS INJURIOUS TO THE PINE. 179 
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46. Tob TWO-FORKED SOUTHERN TIMBER-BEETLE. 
Curphoborus bifurcus Eichhoff. 
Inhabiting the southern pine; mine consisting of a long, sinuous, narrow, primary 
gallery, from which rather short secondary galleries run out at nearly right angles ; 
the beetle being minute. 
Leconte states the species of this genus are next allied to Dendrocto- 
nus, but are minute in size and with long bodies. The elytra are striate 
with large approximate punctures. The fu- 
nicle of the antenne is 5-jointed; first joint 
large and rounded, the others closely united, 
forming a short, conical mass, as in Phleosi- 
nus; club large, slightly pubescent, moder- 
ately compressed; rounded, obtuse at tip, and 
divided by two straight sutures; the first joint 
of the club is more shining than the others. 
There are three species of the genus, C. simplex 
inhabiting the Mohave Desert, California.  C. 
bifurcus differs from C. bicristatus in having 
the first and third interspaces of the elytra 
all moderately elevated, the second not much 
narrowed on the declivity or inclined end of 
the elytra. The punctures of the elytral striz 
are also larger. Leconte seems to suggest that 
the two eastern species may eventually be 
united. Length, 1.5™™ (.06 inch). . 
The mine of this beetle I found under the 
bark of the southern pine at Montgomery, 
Ala.; the beetles taken thereform having 
been submitted to Dr. Horn for identifica- 
tion. The figure well represents an average __ ees 
mine. The primary gallery is nearly four cis ahcuinlatie Ce eee 
inches long, very narrow, somewhat sinuous, ending at one end in a 
broad cell from which three or four secondary galleries pass off. About 
twenty secondary galleries pass off on each side at right angles to the 
main gallery, but not all in the same plane, as the figure shows; they 
are rather short, less than an inch in length, and sometimes end in a 
broad, irregular cell; the round dark spots in the figure indicate the 
holes in the bark for the exit of the insect. It appears to be a common 
pest in the Gulf States. 
47. THE TWO-CRESTED SOUTHERN TIMBER. BEETLE. 
Carphoborus bicristatus Chapins. 
In Georgia occurring under pine bark, according to Leconte. Length, 
~1.8™" (.07 inch). 
‘The five following Scolytids also occur on the pine. The notes are 
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