SMICRONYX WEEVILS—ANDERSON 337 
line which runs from near the base to apex; closely covered with 
elongate-ovate scales, which are white in most specimens but yellowish 
white in some; prosternum moderately emarginate, transversely 
impressed. 
Elytra piceous to black, intervals covered with small, elliptical, 
white to yellowish white scales. Underside of thorax and abdomen 
covered with rounded white scales. Femora piceous, moderately 
clavate, covered with scales similar to those of the elytra. Tibiae 
piceous to reddish brown, covered with elongate-ovate white scales; 
moderately expanded at the apices. Tarsi piceous, covered with 
white scales; fourth segment extending well beyond the third; claws 
connate near the base, moderately divergent. Spiculum gastrale of 
the male genitalia strongly bent at the anterior end. Spiculum 
ventrale of the female genitalia not expanded at the anterior end 
(fig. 143). 
MeasvuREMENTS: The following measurements were taken from 2 
males and 1 female from Tucson, Ariz. (CNHM), 4 males from Law- 
rence, Kans. (CNC), 4 males and 2 females from Colorado Springs, Col. 
(USNM), 5 females from the Jemez Mountains, N. Mex. (CAS), 
and 2 females from St. George, Utah (CAS). All measurements are 
in millimeters: 
Males Females 
“Mean —SEextremes— “Mean —sCExtremes~ 
Body length 3. 52 3. 00-3. 70 3.59 3. 00-4. 10 
Elytra length 230 1. 90-2. 56 2.34 2. 00-2. 70 
Elytra width at base 139 1. 30-1. 70 1.50 ~=1. 20-1. 80 
Prothorax length 1. 00 0. 90-1. 10 1.03 0. 90-1. 20 
Prothorax width 1,15 0. 95-1. 30 114 0. 95-1. 40 
Rostrum length 1. 33 1. 15-1. 40 2.01 1. 65-2. 30 
Rostrum length before antennal 0. 46 0. 36-0. 53 1.17 0. 86-1. 35 
insertion 
Funicular segment 2 length 0.109 0O.102-0.119 0.117 0. 102-0. 136 
Funicular segment 3 length 0. 068 0.068 0. 051-0. 085 
Brotoay: Under the name Desmoris constrictus (Say), this species 
was said by Blatchley and Leng (1916) to breed in the seeds of various 
sunflowers, pupating in the ground, and was reported by Tuttle (1951) 
to breed in the seeds of Helianthus annuus L. (common garden sun- 
flower). Tuttle also reported finding adults of a “Desmoris near 
constrictus (Say)’’ on the flowers of Silphium perfoliatum L. and 
Siuphium terebinthinaceum Jaquin in Illinois. The host-plant records 
which follow were taken from the material examined: ‘(On sunflower,” 
Cypress, Calif. (CU), San Fernando, Calif. (CAS), Farmersville, Tex. 
(USNM), Hondo, Tex. (USNM), McAllen, Tex. (USNM), Mercedes, 
Tex. (USNM), Brownsville, Tex. (USNM); “On Helianthus annuus,” 
Boulder, Colo. (USNM); ‘‘on Helianthus coronatus,’’ Boulder, Colo. 
(USNM); ‘“‘on Helianthus argophyllus,” Boulder, Colo. (USNM); “on 
