CAVE CARABIDAE (COLEOPTERA) OF 
MAMMOTH CAVE 1 
By Thomas C. Barr, Jr. 
Department of Zoology, University of Kentucky, Lexington 
In an earlier paper (Barr, 1962) I listed the troglobitic beetles 
known to inhabit Mammoth Cave, Mammoth Cave National Park, 
Kentucky. The species included several trechine carabids, one catopid 
(Ptomaphagus hirtus Tellk.), and one pselaphid ( Batrisodes henroti 
Park). Further investigations in this huge cavern system and in 
surrounding caves have shown that there are actually 6, instead of 
4, species of trechines sympatric in Mammoth Cave. These include 
Neaphaenops tellkampfii Erichson, a large (7 mm) and very abun- 
dant species, and 5 species of the large genus P seudanophthalmus 
Jeannel. The following key supersedes my earlier key (Barr, 1962: 
p. 279) and is applicable only to Mammoth Cave National Park and 
caves in the immediate vicinity of Horse Cave, Cave City, and Park 
City. 
Key to the Eyeless Cave Carabidae (Trechini) of 
Mammoth Cave National Park 
1 Size large (6.5-7. 5 mm) ; one pair of supraorbital setae; elytron 
with only two discal punctures, the third, or posterior seta 
lacking ; frontal grooves not extended onto sides of head ; last 
segment of maxillary and labial palps much shorter than 
penultimate segment Neaphaenops tellkampfi Erichson 
Size smaller (3. 3-6.0 mm) ; two pairs of supraorbital setae; 
elytron with 3 discal punctures, each bearing a short, stout 
seta or elytron with a single discal puncture near apex; 
frontal grooves extended onto sides of head; last segment 
of maxillary and labial palps subequal to penultimate seg- 
ment (P seudanophthalmus) 2 
2(1) Elytron with a single discal puncture near apex ; mesosternum 
with a prominent median tubercle ; length about 4 mm ; rare 
P. audax Horn 
Elytron with 3 discal punctures; mesosternum simply declivous 
3 
’This investigation has been supported in part by grants from the Na- 
tional Science Foundation (GB-2011, GB-5521). 
Manuscript received by the editor November 30, 1966 
284 
