SMICRONYX WEEVILS—ANDERSON 289 
Elytra reddish brown to piceous, closely covered with imbricate, 
ovate, grayish white scales (nearly white in some specimens), faintly 
mottled with irregular transverse fasciae of light grayish brown scales 
(nearly absent in some specimens); curled setiform scales of each 
interval grayish white or brownish. Underside of thorax and abdomen 
piceous to reddish brown, closely covered with broadly ovate, grayish 
white scales (some tinged with brown). Femora and tibiae reddish 
brown, covered with a mixture of elongate and ovate grayish white 
scales. Tarsi reddish brown, covered with elongate grayish scales; 
third segment distinctly broader than first two; fourth segment ex- 
ceeding the third by slightly more than the length of the latter; claws 
connate for slightly more than a third of their length, moderately 
divergent. 
MeasurEMENTS: The following measurements were taken from 5 
males and 10 females from Draper, Utah, Aug. 25 (B.D. Valentine). 
All measurements are in millimeters: 
Males Females 
Mean Extremes Mean Extremes 
Body length 2.73 2. 50-2. 85 2.69 2. 50-2. 85 
Elytra length 1. 80 1. 60-1. 90 1.75 1. 60-1. 90 
Elytra width at base 1. 06 0. 96-1. 09 1.06 1. 00-1.12 
Prothorax length On73 0. 66-0. 79 0.73 0. 69-0. 76 
Prothorax width 0. 83 0. 73-0. 86 0.80 0. 73-0. 86 
Rostrum length 0. 93 0. 83-1. 06 109" W03=15 12 
Rostrum length before anten- 0. 36 0. 33-0. 40 0.52 0. 46-0. 56 
nal insertion 
Funicular segment 2 length 0.098 0.085-0.102 0.102 
Funicular segment 3 length 0.061 0.051-0.068 0.061 0. 051-0. 068 
Hototyre: Male, USNM 65403 
Typr tocauity: Draper, Salt Lake Co., Utah. Collected by B.D. 
Valentine on August 25, 1953. 
ParatypeEs: 18 females and 4 males from Draper, Utah, Aug. 25, 
1953 (collected at type locality by B. D. Valentine) and 1 female 
from Salt Lake, Utah, June 17, 1932 (USNM), deposited as follows: 
2 males, 5 females in USNM; 1 male, 2 females in DMA; 2 males, 
10 females in B. D. Valentine collection. 
Brotoey: The material from Draper, Utah was labeled: “Sweeping 
roadside weeds, especially Ambrosia.”” Other host-plant records were 
as follows: “Ragweed,” Lewiston, Utah, Aug. 25 (USNM); “on 
Chenopodium,” Salt Lake, Utah, June 17 (USNM). 
Discussion: This species resembles S. corniculatus (Fahraeus) in 
general body shape and proportions, prothoracic punctation, and 
color of elytral scales. However, it is, on the average, a larger species 
with a darker body color, lighter scale colors (resulting in a fainter 
color pattern), and a less strongly rounded prothorax than in S. 
