152 
Psyche 
[June 
Philothermus occidentalis, New Species 
(Fig. 26) 
This species is characterized by the elongate body, narrow pronotal 
margins, 7 rows of elytral punctures, narrowly closed procoxal cavi- 
ties, slightly expanded pronotal process, deeply concave mesosternum, 
and elongate metasternum. 
Description. Length 1. 8-2.2 mm. Color reddish-brown; vestiture 
of short, erect hairs, which are visible under 25 X magnification. 
Pronotum about 0.85 X as long as wide, widest at basal fourth, 
sides slightly converging to rounded apical angles; disc moderately 
convex, lateral margins narrow and somewhat irregular, the edge 
slightly crenulate at base; punctation fairly coarse and dense, punc- 
tures near center about 0.2 X as large as scutellar base and usually 
separated by less than a diameter; interstices smooth and shiny, with 
scattered very fine punctures. Elytra about 1.67 X as long as wide 
and 2.25 X as long as pronotum, widest at anterior third, each 
elytron with 7 rows of punctures (not counting marginal row), the 
punctures about as large as those on pronotum, deeply impressed, 
and fairly closely and irregularly spaced, intervals slightly convex, 
smooth and shiny, with scattered, very fine punctures. Prosternal 
process slightly narrower than a coxal diameter, very slightly ex- 
panded posteriorly and broadly rounded at apex; coxal cavities nar- 
rowly closed behind (fig. 9). Mesosternal concavity fairly deep, 
without a median carina, the process truncate at apex. Metasternum 
slightly longer than first ventrite. Aedeagus (fig. 8) with long, 
narrow parameres; median lobe about 0.75 X as long as abdomen. 
Types. Holotype, Mather, Tuolumne Co., CALIFORNIA, June 
15, 1969, sifting conifer debris (K. Stephan) [No. 32242 M.C.Z.]. 
Paratypes: CALIFORNIA: El Dorado Co.: 1, Blodgett Forest, 
July 24, 1972 (D. S. Chandler) [OSU] ; 1, Lake Tahoe, 11.7 
(Hubbard & Schwarz) [USNM] ; 1, same, July 17-21, 1917 (H. 
C. Fall) [MCZ]; 1, Pollock Pines, May 21, 1970 (R. Belmont) 
[DSC]; 1, no specific locality, Aug. 7, 1970 (F. Andrews) [FA]. 
Mariposa Co.: 1, 10 mi. NW Yosemite, 6000', July 21, 1946 (H. 
P. Chandler) [CAS]. Placer Co.: 4, Forrest Hill, Mar. 1898 
(E. C. VanDyke) [CAS]. Shasta Co.: 1, Hat Creek R. S., 3000', 
June 23, 1947 (H. P. Chandler) [CAS]; 1, Viola, June 18, 1972 
(D. P. Levin) [KS]. Trinity Co.: 1, Trinity Center, June 15, 
1972 (D. S. Chandler) [OSU]. Tuolumne Co.: 16, Mather, June 
15, 1969, sifting conifer debris (K. Stephan) [KS, MCZ, USNM] ; 
1, Strawberry Valley, Aug. 6, 1912 (E. C. VanDyke) [CAS]. 
