232 PROCEEDINGS OF THE NATIONAL MUSEUM Von. 113 
Smicronyx vestitus LeConte 
Figure 60 
Smicronyx vestitus LeConte, Proc. Amer. Philos. Soe., vol. 15, p. 172, 1876. 
Type: Male, Kansas, MCZ 1909 (J. L. LeConte collection). 
Description: Rostra of both sexes black to piceous, fairly stout, 
moderately curved; feebly striate dorsolaterally, sparsely squamose 
behind antennal insertions; slightly more tapered and smooth before 
antennal insertions in female than in male. Head black, finely 
alutaceous, bearing a small patch of light brown scales on front. 
Antennal scape rufous, the rest piceous. Prothorax black, strongly 
rounded on sides, strongly narrowed and slightly constricted toward 
apex; punctures of disk confluent, intervals forming wavy rugae 
which run anterolaterally from midline; closely covered with ovate 
and elongate scales, which are a dirty yellowish brown color; pro- 
sternum moderately emarginate and concave. 
Elytra rufous, except for a dark sutural line, which broadens near 
the base; closely covered with broad, subquadrate scales of same color 
as scales of prothorax. Underside of thorax and abdomen closely 
covered with small, broadly ovate scales similar to those of the dorsum 
in color except for a slight iridescence. Femora moderately clavate, 
black at their bases, but otherwise rufous; covered with elongate 
yellowish scales. Tibiae rufopiceous, covered with linear yellowish 
white scales. Tarsi rufopiceous, third segment distinctly broader 
than first two, tarsal claws small, subparallel, connate approximately 
half their length. Median lobe of male genitalia distinctly widened 
toward apex; internal sac covered with small, blunt spines; spiculum 
gastrale distinctly hooked at its anterior end (fig. 60). 
MeasureEMEnts: The following measurements were taken from 1 
male and 1 female from Tallulah, La. (USNM), 2 males and 2 females 
from Tuscaloosa, Ala. (B. D. Valentine collection), 1 male and 1 
female from Lawrence Co., Tenn. (USNM). All measurements are 
in millimeters: 
Males Females 
Mean Extremes Mean Extremes 
Body length 2. 45 2. 40-2. 50 2. 42 2. 20-2. 60 
Elytra length 170 1. 60-1. 80 1. 67 1. 50-1. 80 
Elytra width at base 1. 07 1. 06-1. 09 1. 03 0. 96-1. 09 
Prothorax length 0. 63 0. 59-0. 66 0. 60 0. 59-0. 66 
Prothorax width 0. 71 0. 69-0. 73 0. 66 0. 63-0. 73 
Rostrum length 0. 90 0. 89-0. 92 0. 88 0. 86-0. 92 
Rostrum length before antennal 0. 24 0. 23-0. 26 0. 31 0. 30-0. 33 
insertion. 
Funicular segment 2 length 0. 051 0. 051 
Funicular segment 3 length 0. 042 0. 034-0. 051 0. 034 
