Appalachian Pseudanophthalmus 
51 
gradually convergent, apexes attenuate; disc subconvex; short scutellar 
stria present, longitudinal striae moderately deep, intervals subconvex, 
inner 3 striae fairly regular, outer striae progressively obsolescent; apical 
groove elongate, oblique, feebly bisinuate, with anterior crosier at level of 
7th umbilicate puncture. Aedeagus of holotype 0.55 mm, similar to that 
of P. fulleri but a little smaller, apical blade larger, wider, and more 
deflexed. 
Type series. — Holotype male (American Museum of Natural His- 
tory), and one male paratype. Horseshoe Cave, 7 km SW Chickamauga, 
Walker Co., Georgia, 10 June 1967, J. R. Holsinger, S. B. Peck, A. Fiske, 
and R. Baroody. One paratype male, same cave, 21 June 1967, S. B. Peck 
and A. Fiske. 
Measurements (mm). — Holotype, total length 4.40, head 0.92 long X 
0.76 wide, pronotum 0.83 long X 0.98 wide, elytra 2.36 long X 1.48 wide, 
antenna 2.84, aedeagus 0.55. 
Discussion. — This small, highly polished species with tapered elytra 
was discovered in a cave in the valley of West Chickamauga Creek, on the 
opposite (east) side of Lookout Mountain from caves occupied by P. 
fulleri and P. digitus. It is probably closest to P. fulleri but is readily 
distinguished by the characters cited in the diagnosis. Horseshoe Cave is 
stratigraphically and structurally isolated from the caves of Lookout 
Valley. 
Pseudanophthalmus nickajackensis, new species 
Fig. 9 
Etymology. — Geographic place name. 
Diagnosis. — A large species with cuspate aedeagal apex, moderately 
transverse pronotum, oblique prehumeral borders, and 3 feebly impressed 
elytral striae, the apical groove oblique and bisinuate, running to apex of 
3rd stria; aedeagus strongly arcuate, apex produced, recurved ventral 
cusp highly diagnostic. 
Description. — Length 4. 1-5.0, mean 4.5 ± SD 0.6 mm (N = 40). Head 
slightly longer than wide, dorsum subglabrous; anterior margin of 
labrum with low median lobe; 3rd segment of maxillary palp 0.8 as long 
as 4th segment. Pronotum 0.8 as long as wide, apex and base widths 
subequal and 0.75 greatest width, which occurs in apical fourth; sides 
sinuate in basal fifth, hind angles about right, base with prominent 
secondary angles; disc subglabrous. Elytra two-thirds longer than wide, 
elongate-oval, depressed, prehumeral borders oblique to midline, humeri 
nevertheless rather prominent; 3 inner striae shallow, intervals flat, outer 
striae obsolescent, 3-5 irregular rows of fine pubescence per interval, 
apical recurrent groove elongate, oblique to suture, bisinuate, connected 
to 3rd stria via crosier. Aedeagus 0.61-0.65 mm long, strongly arcuate. 
