Invertebrate Cave Fauna 
117 
1 able 11. List of cave-limited species (see text for definition) in the Powell 
basin regional fauna. Species listed in same sequence as in text (cf., 
“Review of the Fauna”). * - endemic species. TB = troglobite or 
probable troglobite. 
AQUATIC SPECIES 
*Sphalloplana consimilis (TB) 
S. percoeca (?) (TB) 
*Lumbriculid (sp.) (TB) 
* Fontigens sp. (TB) 
* Bactrurus sp. (TB) 
Crangonyx antennatus (TB) 
Stygobromus cumberlandus (TB) 
*S. finleyi (TB) 
*S. leensis (TB) 
S. mackini (TB) 
Caecidotea recurvata (TB) 
C. richardsonae (TB) 
*C. sp. A (TB) 
*Lirceus usdagalun (TB) 
TERRESTRIAL SPECIES 
*Amerigonsicus henroti (TB) 
* Kleptochthonius affinis (TB) 
*K. gertschi (TB) 
*K. lutzi (TB) 
*K. proximosetus (TB) 
* K. similis (TB) 
* Microcreagris valentinei (TB) 
Hesperochernes tnirabilis 
TERRESTRIAL SPECIES (continued) 
Phanetta subterranea (TB) 
Porrhomma cavernicolum (TB) 
Nesticus carteri 
N. holsingeri (TB) 
N. paynei (TB) 
* Pseudotremia valga (TB) 
P. nodosa (TB) 
Pseudosine/la hirsuta (TB) 
P. orba (TB) 
Litocampa cookei (TB) 
Euhadenoecus fragilis 
* Pseudanophthalmus engelhardti (TB) 
*P. holsingeri (TB) 
*P. rotundatus (TB) 
*P. sidus (TB) 
*P. sp. B ( engelhardti group) (TB) 
*P. de lie at us (TB) 
*P. hirsutus (TB) 
*P. cordicollis (TB) 
*P. pallidus (TB) 
*P. sp. B (jonesi group) (TB) 
*Arianops jeanneli (TB) 
Summary: Total species = 44 ( 14 aquatic, 30 terrestrial); endemics - 27. 
given in Tables 5 through 1 1 and need not be enumerated here. They are 
distributed numerically by taxon as follows: flatworms (2), lumbriculid 
worms (2), aquatic snails (2), amphipods (14), aquatic isopods (6), ter- 
restrial isopods (2), pseudoscorpions (15), mites (1), centipedes (1), mil- 
lipeds (4), diplurans (2), and beetles (46). An analysis of the ranges of 
these species indicates that 53 are recorded from single caves, 15 from 
two or rarely three caves within 5 km of each other, and 29 from two or 
more (usually more) caves located some distance apart. The percent of 
endemic species in each basin is: Shenandoah (0.56), James (0.50), Roa- 
noke (0.30), New (0.34), Holston (0.16), Clinch (0.47), and Powell 
(0.61). 
These data give a clear picture of the degree of endemism among 
cave-limited species in the study area. The highest percentage of regional 
faunal endemics is found among the beetles (principally Pseudanoph- 
thalmus) and pseudoscorpions (principally Kleptochthonius), where, in 
