SMICRONYX WEEVILS—ANDERSON 253 
Smicronyx quadrifer Casey 
Figures 69, 115 
Smicronyx quadrifer Casey, Ann. New York Acad. Sci., vol. 6, pp. 388, 389, 1892. 
Lectotype, here designated: Male, Arizona; USNM 36700 (T.L. Casey 
collection). 
Smicronyx quadrifer var. tecana Blatchley, Canadian Ent., vol. 48, p. 12, 1916. 
Type: Male, Brownsville, Texas, May 25, Purdue University (W. 8. Blatchley 
collection.) 
Description: Rostra of both sexes stout, black to piceous, rugosely 
punctate from base to apex; closely squamose from base to near apex 
in male, to just before the antennal insertions in female. Head black 
to piceous; surface dull, finely alutaceous; finely and thinly squamose 
in front. Antennae rufopiceous throughout. Prothorax broadly 
rounded at the sides, suddenly narrowed and slightly constricted near 
apex, scales either elongate and setalike or elliptical, yellowish brown 
or white, the white scales arranged in three short vittae, which extend 
for a little more than half the distance from base to apex. 
Elytra black, intervals covered, in addition to prominent setalike 
scales, with elliptical scales, of which some are yellowish brown; 
some, in a subquadrate median patch, nearly black, a few white; 
white scales condensed to form a white vitta at the base of the third 
intervals and an abbreviated band at rear edge of the dark patch. 
Underside of the thorax and abdomen black, covered with broadly 
ovate white scales. Femora moderately clavate, piceous, covered 
with elliptical pale yellowish brown to white scales. Tarsi piceous, 
covered with white scales, third segment only slightly broader than 
first two; fourth segment moderately exceeding third; claws nearly 
parallel, connate for approximately half their length. Median lobe 
of male genitalia slightly constricted behind apex (fig. 69). Stem of 
spiculum ventrale of female genitalia only slightly expanded at anterior 
end (fig. 115). 
Measurements: The following measurements were taken from 3 
males and 4 females from San Diego, Tex. (USNM), 1 male from 
Oracle, Ariz. (USNM), 1 male {from the Santa Rita Mountains, 
Ariz. (USNM), 1 male from Catalina Springs, Ariz. (USNM), 1 
female from Hot Springs, Ariz. (USNM), and 1 female from Alice, 
Tex. (USNM). All measurements are in millimeters: 
