SMICRONYX WEEVILS-—ANDERSON 255 
male, from base to antennal insertions infemale. Head black, finely 
alutaceous, thinly squamose in front. Antennae black; scales narrow 
and grayish white. Prothorax black, moderately rounded at sides, 
suddenly narrowed and distinctly constricted near apex; disk evenly 
covered with rounded punctures; scales either elongate, setalike, and 
curled or broadly ovate, brownish in color, except a median white 
vitta and lateral white vittae. 
Elytra black to piceous; intervals closely covered with broad, 
rounded light gray or brownish scales with a mottling of white scales, 
the heavy setalike scales either medium brown or gray. Underside 
of the thorax and abdomen black, closely covered with pale brownish 
gray ovate scales. femora piceous, moderately clavate, closely cov- 
ered with a mixture of elongate and ovate brownish gray scales. 
Tibiae piceous; covered with pale gray elongate scales; slightly ex- 
panded at apices. Tarsi black, covered with light gray scales, the 
third segment only slightly broader than first two, fourth segment 
exceeding the third by more than the length of the latter; claws con- 
nate for slightly less than half their length, slightly divergent. Stem 
of spiculum ventrale gradually broadened toward anterior end 
(fig. 116). 
MeasurEMENTs: The following measurements were taken from 
the lectotype (a female), a female from El Paso, Texas (USNM), two 
males from Chiricahua National Monument, Arizona (Howden), and 
a male from Cheyenne, Wyoming (USNM). All measurements are 
in millimeters: 
Males Females 
Mean Extremes Mean Extremes 
Body length 2. 86 2. 70-3. 10 2. 92 2. 85-3. 10 
Elytra length 1. 94 1. 82-2. 00 1. 82 1. 65-2. 00 
Elytra width at base 1.18 1. 15-1. 25 1. 21 1. 10-1. 32 
Prothorax length 0. 77 0. 69-0. 79 0. 82 0. 75-0. 89 
Prothorax width 0. 79 0. 73-0. 86 0. 90 0. 80-1. 00 
Rostrum length 1. 05 1. 03-1. 06 1.18 1, 15-1. 32 
Rostrum length before antennal 0. 35 0. 33-0. 36 0. 44 0. 35-0. 53 
insertion 
Funicular segment 2 length 0.062 0.051-0.068 0.085 
Funicular segment 3 length 0. 051 0. 068 
Brotoey: The biology of this species is entirely unknown at present. 
Discussion: S. intricatus and S. lepidus Dietz resemble each other 
in having strongly rounded prothoraxes, convex elytra, and strongly 
punctate rostra, but the pale brownish gray scales and moderately 
stout rostrum of S. intricatus should serve to distinguish it from S. 
lepidus, which has pale yellowish brown scales and an extremely robust 
rostrum. In addition, the female genitalia of the two species differ 
in respect to the shape of the spiculum ventrale and the spermatheca 
(compare figs. 116 and 117). 
