REVISION OF THE GENUS PHLOEOSINUS—BLACKMAN 425 
hairs, numerous on first interspace, more scalelike and less numerous 
on third interspace; second interspace slightly narrower than on disk, 
feebly convex (flatter than in setosus), with surface shining and devoid 
of punctures and pubescence. Mesosternum steep in front. 
Female.—Similar to male in size and general appearance; frons 
very broad between eyes, frontal rectangle 0.66 as long as wide; 
somewhat flattened below, with a fine, strongly elevated median carina 
on its lower half; elytral interspaces slightly wider than in male; 
with pubescence slightly more conspicuous on elytra and pronotum 
than in male but less evident than in setosus. 
Type locality——Santa Catalina Mountains, Ariz. 
Additional locality Chiricahua Mountains, Ariz. 
Host—Cupressus arizonica Greene. 
Type material.—Holotype, allotype, and 31 paratypes, U.S.N.M. 
No. 55401. 
Remarks —The holotype, allotype, and 25 paratypes were col- 
lected by M. Chrisman in Cupressus, Santa Catalina Mountains, 
Ariz.; and 6 paratypes were taken from (. arizonica by J. L. Webb, 
Chiricahua Mountains, Ariz. A long series collected by R. L. Furniss 
from C. arizonica at Pine, Ariz., has recently been received. 
PHLOEOSINUS VANDYKEI Swaine 
Phloeosinus vandykei SwAINE, Can. Ent., vol. 47, pp. 366, 367, 1915; Canada 
Dept. Agr., Ent. Branch, Bull. 14, pt. 2, p. 68, 1918.—W. J. CHAMBERLIN, Bark 
and timber beetles of North America, p. 176, 1989. 
Phioeosinus russus SWAINE, Can. Ent., vol. 56, p. 148, 1924.—W. J. CHAMBERLIN, 
Bark and timber beetles of North America, p. 178, 1989. (New synonymy.) 
Male.—Piceous-brown to black with elytra reddish brown and 
brightly shining; 1.8 to 2.25 mm. long, about twice as long as wide. 
Frons moderately wide between eyes, frontal rectangle about 0.76 
as long as wide, epistomal lobe rather short; surface black, shining, 
finely, moderately closely punctured and finely granulate at sides, 
more sparsely punctured and subgranulate above; central area widely, 
deeply concave, median portion glabrous, brightly shining, median 
carina reduced to a tubercle on lower margin, the concavity continued 
in median line, above to vertex as a shallow, moderately wide, in- 
definite impression, hairs at sides and above short and fine. Eye 
three times as long as wide, nearly half divided by the emargination. 
Antenna with club nearly exactly twice as long as wide, first two 
sutures oblique, slightly arcuate, third suture more strongly oblique 
and sinuate. 
Pronotum about 1.2 times as wide as long, widest just behind 
middle; sides arcuate on posterior half, then strongly, arcuately nar- 
rowed, constricted just behind broadly rounded front margin; surface 
