Philothermus, Aube, 1843

Gimmel, Matthew L. & Slipinski, Adam, 2007, A new species of the genus Philothermus Aubé (Coleoptera: Cerylonidae) from Great Smoky Mountains National Park, U. S. A., Zootaxa 1390 (1), pp. 17-20 : 19-20

Key to Nearctic species of Philothermus

1 Prosternum laterally with cavities for reception of antennae; labrum acute at apex; antenna 10­segmented with 1­segmented club; length <1.3 mm; northern Florida .......................................................... ..................................................................................................... P. floridensis (Sen Gupta and Crowson)

­ Prosternum without antennal cavities; labrum not acute at apex; antenna 11­segmented with 2­segmented club; length> 1.3 mm ................................................................................................................. 2

2(1) Elytron with 7 rows of punctures (not including marginal row); lateral margin of pronotum narrow; procoxal cavities narrowly closed behind; California ......................... P. occidentalis Lawrence and Stephan

­ Elytron with 8 rows of punctures (not including marginal row); lateral margin of pronotum broad and explanate; procoxal cavities open behind; eastern North America.......................................................... 3

3(2) Eyes greatly reduced and depigmented, only about 3 facets wide at maximum width (measured along longitudinal axis of body) ( Fig. 3 ); hindwings greatly reduced; length 2.4­3.0 mm; Great Smoky Mountains , Tennessee and North Carolina ......................................... P. stephani Gimmel and Ś lipiṅski, sp. n .

­ Eyes not reduced, darkly pigmented, 6 or more facets wide at maximum width (measured along longitudinal axis of body); length less than 2.4 mm ........................................................................................ 4

4(3) Elytral vestiture consisting of numerous erect hairs that are usually much longer than the diameter of an elytral puncture; pronotal punctation coarser and denser, punctures usually separated by less than their own diameter; lateral margin of pronotum distinctly crenulate; lateral margin of elytron visible from above almost to apex; Georgia and Florida .............................................................. P. puberulus Schwarz

­ Elytral vestiture consisting of very short hairs that are shorter than a puncture diameter, and a few scattered longer hairs; pronotal punctation finer and sparser, punctures usually separated by more than their own diameter; lateral margins of pronotum relatively smooth; lateral margin of elytron visible from above only for anterior half; widespread in eastern North America ..................... P. glabriculus LeConte

Figures

FIGURES 1–6. Philothermus stephani Gimmel and Ślipiṅski, sp. n.; 1) habitus, dorsal view; 2) antenna; 3) right eye, anterior view; 4) prosternal process and procoxal cavities; 5) median lobe of aedeagus, ventral view; 6) tegmen of aedeagus, internal view.