1975] 
Lawrence & Stephan — Cerylonidae 
I5i 
counting that along lateral edge) ; lateral margins of pronotum 
narrow ; procoxal cavities narrowly closed behind ; California. 
occidental is, n. sp. 
— Body shorter and broader, PL/PW less than 0.82 and EL/EW 
less than 1.58; each elytron with 8 rows of punctures; lateral 
margins of pronotum broad and explanate ; procoxal cavities 
open behind; eastern North America.. 2 
2. Elytral vestiture consisting of numerous erect hairs, which are 
usually much longer than the diameter of an elytral puncture; 
pronotal punctation coarser and denser, the punctures usually 
separated by less than the diameter of one; lateral margins of 
pronotum distinct crenulate and lateral margins of elytra visible 
from above almost to apex; Florida puberulus Schwarz 
— • Elytral vestiture consisting of very short hairs, which are shorter 
than a puncture diameter, and a few scattered longer hairs; 
pronotal punctation finer and sparser, the punctures usually sep- 
arated by more than the diameter of one; lateral margins of 
pronotum relatively smooth and lateral margins of elytra visible 
from above only for anterior half. glabriculus LeConte 
Philothennus glabriculus LeConte 
(Fig. 25) 
Philothermus glabriculus LeConte, 1863: 69. Type locality: Pennsylvania. 
Lectotype, $, No. 6827 M.C.Z. (selected by J. F. Lawrence, April, 
1975). 
This species may be distinguished from the Floridian P. puberulus 
by the larger size (1.9-2. 3 mm.) and somewhat broader form, shorter 
elytral hairs, finer and sparser pronotal punctation, and relatively 
smooth and even lateral pronotal margins. The western P. occi- 
dentalis is more elongate, with narrower pronotal margins and closed 
procoxal cavities. This is probably the most common cerylonid in 
eastern North America and it may occur with Cerylon unicolor , 
which is easily distinguished by the much narrower form and 1 -seg- 
mented antennal club. 
Distribution. Widespread throughout eastern North America from 
southern Ontario and Maine, south to northern Florida and west to 
Oklahoma and Texas. 
Biology. Adults have been taken under the bark of Acer , Cary a, 
Fagus, Pinus, Quercus, Tsuga, and Ulmus. Also taken under boards, 
in rotten logs, sawdust piles, malt traps, leaf litter, tree holes, and 
forest debris. 
