120 Thomas C. Barr, Jr. 



County, through Barren County to Smiths Grove and Three Forks in 

 Warren County, Kentucky, hybridizing with nominate menetriesi in 

 caves at Park City and Cave City. 



Pseudanophthalmus simulans, new species 



Fig. 2 



Etymology. — Latin simulans, "simulating." 



Diagnosis. — Closely similar to menetriesi but larger, pronotum wider, 

 elytra pubescent over entire disc, elytral chaetotaxy +++, humeri more 

 pronounced, with slight posthumeral sinuation in margin; aedeagus 

 larger than that of menetriesi, its apex much wider in dorsal view. 



Description.— Length 5.2-6.4, mean 5.8 ± 3.0 (N = 19), larger than 

 menetriesi (P = .01). Form robust, convex, pubescent, elytral micro- 

 sculpture not pruinose. Head as wide as long, labrum doubly emargin- 

 ate. Pronotum about 0.9 as long as wide, disc pubescent, sides curved 

 in apical 2/3, barely sinuate in basal 1/7, hind angles as in menetriesi. 

 Elytra with humeri more prominent, humeral serrations larger and 

 deeper, margin with shallow posthumeral sinuation; disc densely pubes- 

 cent, posterior discal seta present. Aedeagus as in Figure 2, similar to 

 that of menetriesi but significantly larger. 



Type series. — Holotype male (American Museum of Natural His- 

 tory) and 17 paratypes, Cub Run Cave, at Cub Run, Hart Co., Ken- 

 tucky (Cub Run iyi Quadrangle), 18 November 1964, T. C. Barr, W. 

 M. Andrews; one paratype, same cave, 29 December 1956, L. Hubricht. 

 Measurements of holotype (mm): total length 6.18, head 0.93 long X 

 0.93 wide, pronotum 1.08 long X 1.18 wide, elytra 3.50 long X 2.17 

 wide, antenna 3.75 long. 



Distribution. — The species is an isolate known only from the type 

 locality. Extrinsic isolation of Cub Run Cave is a reasonable hypothesis, 

 supported by absence of any vicar taxa related to Neaphaenops tell- 

 kampfi (Erichson), P. striatus (Motschulsky), or P. pubescens (Horn), 

 which coexist with P. menetriesi. By similar reasoning, this species and 

 the next three (described below) are judged to have arisen along with P. 

 menetriesi through multiple cave colonization by a common ancestor. 



Pseudanophthalmus pilosus , new species 



Fig. 3 



Etymology. — Latin pilosus, "hairy." 



Diagnosis. — Closest to menetriesi, differing in more convex, vaulted 

 elytra, flat near middle of disc and with abruptly declivous sides; elytral 

 disc uniformly pubescent and not pruinose; 6 discal striae usually deeply 

 impressed and seriate-punctulate, intervals subconvex, discal setae +0+ 



