Revision of Trechus 
53 
feebly transverse; labrum evenly emarginate; eye diameter 0.14-0. 15 mm, 
a little less than or subequal to scape length. Pronotum less than 0.7 as 
long as wide, sides arcuate apical two-thirds, then convergent and barely 
sinuate or not sinuate before obtuse hind angles; greatest width in apical 
fourth. Elytra 1.4 times longer than wide, oval, subconvex, four 
longitudinal striae and trace of fifth present, apical groove wide and 
rather short, terminating at or a little anterior to level of anterior apical 
puncture. Aedeagus 0.49-0.58, mean 0.53 mm long, basal bulb large and 
bent at right angle to median lobe, apex narrowed, produced, abruptly 
truncate; parameres long, rather slender, each with four apical setae. 
Type series . — Holotype male (AMNH) and 19 paratypes, Tusquitee 
Bald, Clay-Macon counties, North Carolina, 4 August 1960, T. C. Barr 
and M. C. Bowling. 
Measurements (in mm). — Holotype male: total length 2.95, head 0.57 
long X 0.60 wide, pronotum 0.54 long X 0.83 wide, elytra 1.71 long X 
1.23 wide, antenna 1.28 long. 
Distribution . — The species is known at present from three small moun- 
tain ranges in southwestern North Carolina, the Tusquitee/Valley River, 
Snowbird, and Cheoah mountains. Two additional localities from which 
I have collected T. tusquitee are Joanna (^Teyahalee) Bald, Graham- 
Cherokee counties, and Cheoah Bald, Graham-Swain counties. It may 
also occur in the adjacent Nantahala Mountains, although none of the 
small, vandykei-\ike species have yet been found there. 
Discussion . — The altitudinal range of T. tusquitee is about 3500 to 5000 
feet (1070 to 1525 m); it was collected near Old Road Gap on the slopes 
of Tusquitee Bald, on the north-facing cliff at the summit of Tusquitee 
Bald, at a spring on the same mountain at an intermediate elevation, at 
about 4500 feet (1370 m) near the summit of Joanna Bald, and at 5060 
feet (1540 m) on the summit of Cheoah Bald. 
The broadly transverse pronotum with obtuse hind angles and wide 
marginal gutter (Fig. 9) suggests affinity with 77 bowhngi, which inhabits 
the Great Smoky Mountains northeast of the range of T. tusquitee , but the 
smaller and apically truncate aedeagus indicates probable status as a dis- 
tinct species. Taken with T. tusquitee on Tusquitee Bald were two other 
species of Trechus, T. barben and T. luculentus wayahensis. 
Trechus ( Microtrechus) bowlingi Barr 
Figs. 10, 29 
Barr 1962:78. Type locality, Mt. Kephart, Great Smoky Mountains, 
Sevier County, Tennessee; type deposited in USNM. 
