Invertebrate Cave Fauna 
25 
Bactrurus sp. 
Stygobromus cumberlandus 
S. interitus 
S. abditus 
S. finleyi 
S. leensis 
S. mackini 
KENTUCKY 
VIRGINIA 
Fig. 8. Distribution of troglobitic amphipods ( Bactrurus and Stygobromus ) in 
0 25 50 km 
0 25 50 miles 
the study area. All localities for S. mackini (including those in Anderson and 
Grainger counties, Tenn., and Mercer and Monroe counties, W.Va.) shown 
except Berry Cave, Roane County, Tenn. Two symbols in a circle indicate two 
species from the same cave. 
Stygobromus 
emarginatus group ▲ gracilipes group 
1 . fergusoni 
2. hoffmani 
3. morrisoni 
4. mundus 
ephemerus group 
5. ephemerus 
6. estesi 
7. conradi 
8. gracilipes 
4 spinosus group 
9. pseudospinosus 
• ungrouped species 
10. baroodyi 
11. biggersi 
12. stegerorum 
WEST VIRGINIA 
n 
i 
5^ VIRGINIA 
if 
25 ^0 km 
50 miles 
Fig. 9. Distribution of troglobitic amphipods {Stygobromus) in the study area. 
Single localities for S. morrisoni in Hardy and Pendleton counties, W.Va., 
also shown. Two symbols in a circle indicate two species from the same cave. 
