New Beetle Species Groups 
87 
Figs. 1-3. Pseudanophthalmus: simplex group. 1. P. simplex, n. sp. (4.6 mm). 2. 
Aedeagus, P. simplex n. sp. (0.86 mm). 3. Aedeagus, P.fowlerae, n. sp. (0.68 mm). 
Description . — Length 4.2-5. 1, mean 4.6 mm. Form robust and 
depressed; elytral microsculpture finely transverse, forming meshes, with 
trace of pruinose microsculpture near middle of disc, scarcely discernible 
(50X). Head rounded, as wide as long; labrum distinctly trilobed. 
Pronotum transverse, 0.8 as long as wide, disc feebly convex and very 
sparsely pubescent; sides strongly arcuate in apical 0.8, subparallel in 
basal 0.2; front angles rounded, apex about 0.85 maximum width, which 
occurs at apical 0.20-0.22, base width nearly equal to maximum width, 
hind angles large and more or less right or slightly acute, depending on 
development of lateral emargination of base and secondary angles, which 
are variably developed but always present in some form. Elytra more 
than 1.5 times as long as wide, depressed, moderately pubescent; humeri 
angular, somewhat obsoletely serrulate, prehumeral border not quite per- 
pendicular to midline; inner 4 longitudinal striae moderately impressed, 
intervals convex, outer striae obsolete; apical groove subparallel or 
slightly oblique to suture, running to third stria in advance of anterior 
apical puncture or running to anterior apical puncture via prominent 
crosier. Aedeagus 0.78-0.89, mean 0.83 mm long; feebly arcuate, basal 
bulb not appreciably expanded and not deflexed, apex gradually atten- 
uate, scarcely produced, rounded at tip; right copulatory piece a more or 
