50 
Thomas C. Barr, Jr. 
distinctly sinuate pronotum sides and the form of the aedeagus. From 77 
haoe it is distinguished by having only two instead of four distinct elytral 
striae; the aedeagus is less arcuate, and the parameres usually bear five 
rather than four apical setae. Nominate vandykei differs from 77 v. 
pisgahensis , which occurs south of the French Broad River valley, in the 
nearly right hind angles of the pronotum and the slightly longer, slightly 
less arcuate aedeagus. 
Both subspecies of 77 vandykei are relatively common, but less so than 
the somewhat larger 77 hydropicus beutenmuelleri or 77 barben. They occur in 
leafmold or under moss carpets. Nominate vandykei is known from several 
localities in the Black Mountains, the Great Craggy Mountains, at 
Balsam Gap between these two ranges, and from the Pinnacle at the point 
where the Blacks join the Blue Ridge (Yancey-Buncombe-McDowell 
counties, North Carolina). It also occurs on Camp Creek Bald and Unaka 
Mountain, in Greene and Unicoi counties, Tennessee, respectively. In the 
Black Mountains it is sympatric with four other species of Trechus: 77 
schwarzi scopulosus, 77 mitchellensis, 77 carolinae , and 77 hydropicus 
beutenmuelleri. 
Trechus ( Micro trechus) vandykei pisgahensis , new subspecies 
Figs. 7, 26 
Trechus (Microtrechus) vandykei: Barr 1962:77 (in part). 
Etymology.— From Mt. Pisgah, the type locality. 
Description . — Length 2. 5-2. 8, mean 2.7 mm. Closely similar to T. v. 
vandykei , differing in more oblique sides and slightly obtuse hind angles of 
pronotum; aedeagus more arcuate and slightly smaller, 0.45-0.49 mm 
long. 
Type series . — Holotype male (AMNH) and 29 paratypes, Mt. Pisgah, 
elevation 5000 feet (1524 m), Haywood-Buncombe counties, North 
Carolina, 21 May 1961, T. C. Barr; 15 additional paratypes, same 
locality and collector, 26 July 1960, 12 September 1964, and 17 August 
1978. 
Measurements (in mm). — Holotype male: total length 2.79, head 0.52 
long X 0.55 wide, pronotum 0.51 long X 0.71 wide, elytra 1.54 long X 
1.12 wide, antenna 1.22. 
Distribution. — Occurs in the Great Balsam Mountains, Pisgah Ledge, 
and the Cowee Mountains, separated from the range of T. v. vandykei by 
the valley of the French Broad River. Additional localities other than Mt. 
Pisgah are Shining Rock Road and Graveyard Fields, Haywood County; 
