72 
Thomas C. Barr, Jr. 
Cave, Blount County, Tennessee, at the edge of Great Smoky Mountains 
National Park (below the Rich Mountain Road, elevation 1840 feet 
[560m]), differs from nominate T. tennesseensis in the absence of internal 
clypeal grooves and outer elytral striae. The two taxa treated as polytypic 
T. tennesseensis are probably quite isolated, at least extrinsically, at the 
present time, but the morphological differences between them are so 
slight that I consider them relatively recent (post-Wisconsin?) relics of a 
previously more widely distributed species. 
Trechus ( Microtrechus) nantahalae , new species 
Figs. 17, 43, 45 
Etymology . — From Cherokee nantahala , geographic name for the moun- 
tain range in which the type locality occurs. 
Diagnosis. — Resembles T. tennesseensis in small eyes, pale coloration, 
sinuate sides of pronotum, and slender aedeagal apex; differs in obtuse 
hind angles of pronotum, shorter apical recurrent groove, smaller 
aedeagus, and knobbed right copulatory piece. 
Description . — Length 4. 2-4. 4, mean 4.2 mm. Reddish piceous, shining; 
microsculpure obsolete on central elytral disc; form robust and subcon- 
vex. Head a little wider than long; labrum shallowly and singly 
emarginate; frontal grooves broad and deep; eyes small and subconvex, 
their diameter (about 0.15 mm) less than scape length; antenna about 
0.45 body length. Pronotum 0.3 wider than long; apex and base subequal 
in width and about 0.7 maximum width; widest in apical third; sides ar- 
cuate, sinuous in basal sixth, hind angles small, sharp, slightly elevated, 
and obtuse; basal foveae broad and deep, separated from marginal gutter 
by low ridge; base oblique behind hind angles, thus slightly lobed. Elytra 
0.75 as wide as long; inner three longitudinal striae moderately deep, in- 
ner intervals subconvex, 4th and 5th striae shallow, outer striae obsolete; 
apical recurrent groove attaining 5th stria a short distance in advance of 
anterior apical puncture; scutellar stria very short, obsolescent; anterior 
discal puncture slightly behind level of 4th umbilicate puncture. 
Aedeagus of paratype 0.94 mm long, similar to that of T. tennesseensis but a 
little shorter, apex slender in dorsal view; dorsal (right) copulatory piece 
with apex twisted into knob. Female unknown. 
Type series. — Holotype male (AMNH) and 4 male paratypes, 0.4 mile 
(0.6 km) northwest of Burningtown Gap on the southwest slope of Burn- 
ingtown Bald, at a seep along the Appalachian Trail, elevation 4300 feet 
(1300 m), Macon County, North Carolina, 5 July 1969, T. C. Barr. 
