52 
Thomas C. Barr, Jr. 
Description. — Length 2. 6-2. 9, mean 2.7 mm. Form small, robust, sub- 
convex; color piceous, shining, all appendages pale, contrasting. Head 
feebly transverse; labrum evenly emarginate; eye diameter 0.12-0.14 mm, 
a little less than or subequal to scape length. Pronotum about 0.7 as long 
as wide, sides arcuate apical two-thirds, then convergent and not sinuate 
before small, obtuse, hind angles; greatest width in apical fourth. Elytra 
1.4 times longer than wide, oval, subconvex, four longitudinal striae pres- 
ent, outer striae obsolescent, apical groove wide and rather short, ter- 
minating a short distance anterior to anterior apical puncture. Aedeagus 
0.45-0.48, mean 0.46 mm long, strongly arcuate and rather slender, more 
so than in T. vandykei pisgahensis which it most closely resembles; 
parameres with four apical setae. 
Type series. — Holotype male (AMNH) and 21 paratypes, Haoe Lead, 
elevation 4800 feet (1460 m) above Joyce Kilmer Memorial Forest, 
Graham County, North Carolina, 25 July 1960, T. C. Barr and M. C. 
Bowling. 
Measurements (in mm). — Holotype male: total length 2.70, head 0.49 
long X 0.58 wide, pronotum 0.55 long X 0.80 wide, elytra 1.66 long X 
1.19 wide, antenna 1.20 long. 
Distribution. — Known only from the type locality in the Unicoi Moun- 
tains, along the Tennessee-North Carolina border. 
Discussion. — Morphologically T. haoe is closest to T. vandykei pisgahensis, 
but the geographic ranges of T. tusqmtee and T. bowlingi (two other closely 
similar species) intervene, suggesting complete genetic isolation. The en- 
tire type series was collected from beneath a moss carpet on a large 
boulder. Associated with T. haoe , but less abundant, were T. talequah and 
T. barben. Trechus luculentus umcoi, the only other species of the genus thus 
far known from the Unicoi Mountains, has been collected nearby but not 
at the same spot. 
Trechus ( Microtrechus) tusquitee , new species 
Figs. 9, 28 
Trechus (Microtrechus) vandykei: Barr 1962:77 (in part). 
Etymology. — From Tusquitee Bald, the type locality. 
Diagnosis. — A small species of the vandykei group with obtuse, not 
rounded, hind angles of the pronotum, four elytral striae, the aedeagal 
apex produced and truncated. 
Description. — Length 2. 6-3. 2, mean 2.8 mm. Form small, robust, sub- 
convex; color piceous, shining, appendages all pale, contrasting. Head 
