1978] Peck — Adelopsis in the Southern Appalachians 357 
is broader and more blunt. The orifice is dorsally sub-terminal and 
cuts the left side of the aedeagus as in Ptomaphagus. The south- 
eastern U.S. Adelopsis species are all forest litter and soil inhabi- 
tants. They are all wingless and have eyes reduced to a collection of 
about 20 pigmented facets. These structural features will help to 
distinguish them from most Ptomaphagus, which are either winged 
and with larger eyes, or are more subterraneanly adapted (for life in 
caves) and have more-reduced eyes. 
Description. The following applies only to the range of variation 
known in the species in the southeastern U.S. Additional details on 
Neotropical species may be found in Jeannel (1936) and Szymcza- 
kowski (1964, 1968, 1969, 1975). Length 2.3 to 2.6 mm, width 1.2 to 
1.3 mm. Form elongate oval, compact, convex (Figs. 1, 2). Color 
light to dark reddish brown. Pubescent, with numerous short 
recumbent hairs. Head finely punctured; eyes reduced to collection 
of about 20 pigmented facets (Fig. 3); eye width 1/3 width of space 
from antennal base to head margin across eye. Antennae short, 
compact; club darker, somewhat flattened; reaching from middle to 
hind margin of pronotum when laid back; segment 3 shorter than 2, 
segment 6-10 wider than long; 8 over twice as wide as long 
(segments usually longer and thinner in upper elevation deep-litter 
species than in lower elevation litter-soil species). Last article of 
maxillary palp slightly shorter than preceding; conical, thinner. 
Pronotum widest 1/3 before base, 1.4 to 1.5 times as wide as long; 
hind angles acute, hind margin straight; sides arcuate; covered with 
seta-bearing punctures strongly to faintly organized into striae. 
Elytra fused, sides gradually tapering to apex in both sexes; external 
apical angles broadly rounded; sutural angles rounded; apex 
oblique; strigae distinct, oblique, composed of seta-bearing punc- 
tures. Metathoracic (flight) wings reduced to tiny scales. Meso- 
sternal carina low, its notch distinct. Legs not noticeably short and 
compact (seemingly adapted for running and not digging); protibiae 
bowed-in, mesotibiae bowed-out, metatibiae straight; comb of 
spines limited to tibial apex; protibial apex oblique and rounded in 
both sexes; sexual dimorphism only in protarsi, males with first 4 
protarsal segments expanded and spongy-pubescent beneath. 
Aedeagus curved, stout, blunt, with orifice cutting to dorsal surface 
through left side; internal sac with curled, short, terminal stylet with 
surface ridges on one side of tip; about 6 sensory hairs on under 
