1978] Peck — Adelopsis in the Southern Appalachians 361 
found to be of great help in viewing and understanding the three- 
dimensional structure of the tips of the minute aedeagi. With this 
understanding, they can be more easily interpreted in the usual slide 
or glycerine jelly mounts and preparations. SEM photomicrographs 
were used to make the drawings of the aedeagal tips. A set of three 
views is usually necessary to interpret and understand the geometry 
of the aedeagal tip. Although a set of about 6 hairs occurs on each 
side of the undersurface of the aedeagal tip in all species, these have 
little value in helping to characterize the species. These hairs have 
been shown on only a few drawings. Internal sacs were fully seen 
only in polyvinyl-lactophenol slide mounts. 
Variation. Little variation is evident in these species, and little is 
known of variation within the other species of the genus. Variation 
over the geographic range of a species is known and illustrated only 
for A. simoni (Portevin), known from Brazil, Venezuela and 
Mexico (Szymczakowski, 1968) and in A. brunneus Jeannel, from 
cave and forest sites from Columbia through Venezuela to Trinidad 
(Szymczakowski, 1975). Apparent variation in spermathecae is 
partly due to the difficulty in preparing these fragile structures. 
When material is limited and the normal spermathecal shape is not 
known with certainty, several may be illustrated. 
Individual diagnoses are not given in the following species 
accounts. In all cases it would indicate that the species are character- 
ized by the combination of characters of their geographic ranges, 
and of the aedeagal tips, and possibly of the spermathecae. 
The gender of the genus is treated as feminine, following the use 
of its author. 
The mitchellensis species group 
This group is probably not a closely related assemblage, and is 
used as a grouping of convenience. Each of the five species is clearly 
defined, and each may be as phyletically old as the cluster of 1 1 
species placed in the following appalachiana species group. 
1. Adelopsis mitchellensis (Hatch) 
Figs. 1-5, 50 
Adelops mitchellensis Hatch, 1933: 208. Synonymy given in Peck 1973: 55. 
Material seen. North Carolina. Yancey County. Mt. Mitchell, 
no other data, holotype male, allotype female, and paratype male 
50133, USNM. Mt. Mitchell 4500-6000' (=1475-1967 m); 17-24. VI. 
