Revision of Trechus 
63 
Aedeagus 0.92-1.02, mean 0.97 mm long; thick, strongly arcuate, basal 
keel strong, apex attenuate, produced, curved to left, finely knobbed; 
copulatory pieces exserting to right, right piece much larger, heavily 
sclerotized, enfolding smaller left piece; internal sac armed with medial 
band of dense, slender spines; parameres broad, non-styliform (Fig. 
36A), in left lateral view, with seta-bearing surfaces peculiarly elongate, 
obliquely truncate; usually only three setae on apex of each paramere, 
rarely four. 
'•j 
Type series . — Holotype male (AMNH) and 12 paratypes, Appalachian 
Trail near summit of Mt. Kephart, Sevier County, Tennessee, Great 
Smoky Mountains National Park, altitude approximately 6000 feet (1800 
m), 1 July 1960, T. C. Barr, M. C. Bowling, Joyce and R. T. Bell. 
Measurements (in mm). — Holotype male: total length 3.80, head 0.78 
long X 0.71 wide, pronotum 0.78 long X 1.02 wide, elytra 2.23 long X 
1.61 wide, antenna 1.74 long. 
Distribution. — Known only from the central Great Smoky Mountains of 
Tennessee and North Carolina, from about 3500 to 6000 feet (1070 to 
1830 m) in elevation. 
Discussion . — In my earlier paper (Barr 1962) T. valentinei was confused 
with T. verus, another pale species with small eyes. The older records cited 
for 77 verus at Clingmans Dome, Sugarland Mountain, and Mt. Kephart 
(Barr 1962:82) are incorrect and apply to T. valentinei. True T. verus is 
known only from Mt. Sterling, Cataloochee Balsam, and Old Black, in 
the eastern end of the Smokies. 
Trechus valentinei is an inhabitant of the high spruce-fir forests of the 
Great Smokies, where it occurs under rocks beside streams and springs 
and in shallow ravines, often in company with the more abundant T. 1. 
luculentus and occasionally with a rare specimen of T. uncifer or T. 
novaculosus. In addition to the type locality I have taken this species on Mt. 
LeConte, near the summit; Clingmans Dome, near the summit; Mt. 
Collins, near the summit; Sugarland Mountain, near its junction with the 
main crest of the Smokies. It can be readily distinguished from sympatric 
species of Trechus by the small eyes and paler color (T. verus , also pale with 
small eyes, is apparently allopatric), the broad pronotum base and acute 
hind angles, and the slender, produced, sinistrally twisted aedeagal apex 
(often visible without dissection). The non-styliform parameres are ex- 
ceptional, duplicated in no other trechine species known to me (although 
rather different non-styliform parameres occur in Italian and Yugoslavian 
species of Orotrechus Muller). 
