SMICRONYX WEEVILS—ANDERSON 303 
closely spaced. Sides of elytra subparallel; humeri prominent, de- 
clivities distinct. Male genitalia only moderately elongate, similar 
in shape to those of the S. corniculatus and S. obtectus groups (compare 
figs. 76, 82, 84). Setiform scales prominent on prothorax and elytra. 
Discussion: Although S. imbricatus is similar to the S. obtectus 
and S. corniculatus groups in general body form and male genitalia, 
its subcylindrical prothorax and almost completely squamose rostrum 
make that species difficult to include in either of those groups. There- 
fore, S. imbricatus is treated here as a separate group. 
Map 12 gives the distribution of this group. 
Map 12.—Distribution of the specimens 
examined of imbricatus group of Smz- 
cronyx. >, S. imbricatus. 
Smicronyx imbricatus Casey 
Figures 84, 134 
Smicronyx imbricatus Casey, Ann. New York Acad. Sci., vol. 6, pp. 391-392, 
1892. Lectotype here designated: Male, Mojave, California, USNM 36703 
(T. L. Casey collection). 
Synertha hornii Dietz, Trans. Amer. Ent. Soc., vol. 21, pp. 173-174, pl. 8, figure 
25, 1894. New synonymy. Type: male, “Ariz.” MCZ 1924 (Dietz 
collection). 
Description: Rostra of both sexes black to piceous, rather slender, 
moderately curved; squamose, closely but not coarsely punctate from 
base to near apex in male and female. Head black, entire surface 
thinly squamose. Antennae piceous, their scales pale brown. Pro- 
thorax black, sides subparallel from base to point of convergence 
toward apex; evenly covered with deep rounded punctures; scales 
ovate, white at sides and along midline, medium to light yellowish 
brown elsewhere; prosternum deeply emarginate, not concave. 
