78 
Thomas C. Barr, Jr. 
Pseudanophthalmus pallidus, new species 
Figs. 43, 51 
Etymology. — Lsitin pallidus , “pale.” 
Diagnosis. — A moderately depressed and slender species of small size 
(3. 9-4.3 mm), the elytral striae obsolescent and the aedeagal apex simple. 
Description. — Length 3. 9-4.3, mean 4.2 ± SD 0.2 mm (N = 8). Rather 
pale testaceous, moderately slender and subconvex, dull shining, moder- 
ately pubescent. Head 0.2 longer than wide; labrum with prominent 
median lobe in anterior margin; antenna two-thirds body length. Prono- 
tum 0.87 as long as wide, cordiform, apex 0.1 wider than base and 0.75 
maximum width; anterior angles prominent, sides evanescently sinuate 
and almost convergent from apical third to obtuse, sharp, slightly ele- 
vated hind angles, base oblique behind angles, small secondary angles 
broadly rounded; disc subconvex, 3 long setae each side. Elytra 0.75 longer 
than wide, elongate-oval, prehumeral borders oblique to midline, humeri 
rather prominent; 4 inner striae and trace of 5th vaguely discernible, 
intervals flat, apical groove elongate and bisihuate, joining 3rd stria via 
crosier. Aedeagus 0.52-0.53 mm long, smaller than in any other known 
species of the jonesi group; apex simply and briefly attenuate. 
Type series. — Holotype male (American Museum of Natural His- 
tory), 1 male and 3 female paratypes, Chadwell Cave, 6 km NE Tazewell, 
425 m S of Cedar Fork Road, and 1000 m N of Henderson Knob, in a 
wooded sink at elevation 400 m (Tazewell IV 2 ' Quadrangle, 36‘^29'46" x 
83^3 r23"), 18 July 1979, T. C. Barr, Jr., T. C. Barr, III, and J. R. 
Holsinger; one paratype male, same cave, 1 March 1964, S. B. Peck. 
Measurements (mm). — Holotype, total length 4.34, head 0.89 long X 
0.73 wide, pronotum 0.77 long X 0.89 wide, elytra 2.36 long X 1.35 wide, 
antenna 2.88, aedeagus 0.53. 
Discussion. — Chadwell Cave, developed in the Harrison Bridge and 
Martin limestones (Ordovician), has approximately 600 m of readily tra- 
versable passages. Most of the specimens of this species occurred on wet 
silt under rocks near the stream. In addition to Chadwell Cave, P. palli- 
dus has been taken in nearby Buis Saltpeter Cave (6.7 km northeast of 
Tazewell, two females) and English Cave (Barr 1961:115), both in Clai- 
borne County. The single female from English Cave, taken in July 1965 
by J. Holsinger and C. Rippy, establishes the first known case of sympa- 
try of three species of Pseudanophthalmus in the Appalachian valley. 
Much more abundant in English Cave are P. engelhardti and P. rotunda- 
tus, the former known only from English Cave and the latter extending 
up the Powell River valley to small caves near Rose Hill, Lee County, 
Virginia. A troglobitic milliped, Pseudotremia nodosa Loomis, and a 
troglobitic pseudoscorpion, Kleptochthonius affinis Muchmore, are 
