456 
Psyche 
[September-December 
noteworthy variation among female samples is as follows: the Mam- 
moth Lakes, Pinehurst, Woodlake, and Glenville specimens are 
lighter colored than most specimens from other localities; the Wood- 
lake and Glenville specimens have zero to two stout peripheral sternal 
setae (nearly all other specimens have many more) and fewer post- 
ocular setae than nearly all other specimens. 
Variation in both sexes indicates, not surprisingly, that gene flow 
is restricted in portions of this species’ geographic range. Gene flow 
between the more northern populations (Yosemite, Briceburg, Ben- 
ton Station, and Mammoth Lakes) and those to the south may be 
especially restricted. Possible competition or hybridization with A. 
calif ornicus in the area of sympatry around Mariposa may have an 
important effect upon the genetics of these northern populations. The 
Yosemite and Briceburg specimens are especially divergent and may 
eventually prove to represent a distinct species. Obviously, more and 
larger samples must be collected in order to obtain an accurate picture 
of geographic variation and of factors affecting gene flow within 
this species. 
Distribution. Central and southern Sierra Nevada Mountains and 
part of the Coast Range Mountains north of Los Angeles (Map a). 
Records. California. Fresno Go.: Loop road 5 mi. S of Hume 
Lake, 6000 ft., 16 Oct. 1973, 2 cf, 9$. — Hwy. 245, 1 mi. E of 
Pinehurst, 4300 ft., 18 Oct. 1973, 2 cf, 3$. Kern Co.: Glenville, 
15 Nov. 1969, cf- — 10 mi. SW of Glenville, 2$. Madera Co.: 
7 mi. W of Mammoth Lakes, 8700 ft. 2?. Mariposa Co.: near 
Briceburg, 1300 ft., cf. — 4 mi. N of Briceburg on Hwy. 140, 
1300 ft., $. — Yosemite Nat’l Pk., 3.4 mi. E of Yosemite Cr. 
bridge on Hwy. 120, about 8000 ft., 10 Aug. 1972, 2 cf • — Yosem- 
ite Nat’l Pk., 20 mi. E of Crane Flat on Hwy. 120, about 8000 ft., 
?. Mono Co.: Benton Station, 26 Oct. 1941, cf. Tulare Co.: 
Sequoia Nat’l Pk., Congress trail near General Sherman Tree, 6800 
ft., 13-14 Aug. 1972, cf, 5$. — 14 mi. N of Woodlake on Hwy. 
69, 1200 ft., 10 Nov. 1972, cf, 3$. Ventura Co.: 5.5 mi. S of 
Squaw Flat, 29 Nov. 1970, cf • 
Aliatypus isolatus new species 
Figures 56, 67, 80, 107-109, 144-146. Map 3. 
Type specimens and etymology. Holotype male from Cave Springs 
Campground, about 9 mi. north of Sedona in Oak Creek Canyon, 
Coconino Co., Arizona, 19 August 1972 (F. A. Coyle). One male 
and four female paratypes. The specific name is a Latin adjective 
meaning isolated. 
