SMICRONYX WEEVILS—ANDERSON 249 
4. Rostrum very robust, only slightly tapered from base to apex; scales of elytra 
yellowish white to light yellowish brown; prothorax slightly constricted 
near apex. ... ... . . §. lepidus Dietz (p. 256) 
Rostrum stout at pee ‘but moticcably, tapered from base to apex; scales of 
elytra a mixture of brownish gray, brown, and white; prothorax strongly 
constricted near apex. ...... .. . . S.intricatus Casey (p. 254) 
: ‘. 
Map 4.—Distribution of the specimens examined of the quadrifer group of Smicronyx. 
O, S. albonotatus; A, S. lepidus; A, S. intricatus; @, S. lutulentus; 4, S. quadrifer. 
Smicronyx lutulentus Dietz 
Fieures 67, 113 
Smicronyx lutulentus Dietz, Trans. Amer. Ent. Soc., vol. 21, p. 170, 1894. 
Lectotype, here designated: Male, “Tex.,’”’ MCZ 1920 (Dietz collection). 
Description: Rostrum black to piceous; substriate for most of its 
length in the male, stouter and more strongly curved in male than in 
female; smoother, less scaly before antennae in female. Antennae 
piceous to reddish brown. Head black, finely alutaceous, closely 
squamose (scales light brown) in front. Prothorax closely covered 
with a mixture of broadly ovate and elongate scales, mostly golden 
brown, except for very short median and lateral white vittae, which 
extend a short distance from base. Prosternum slightly concave; 
antecoxal ridges not very distinct. 
Scales of the elytra broad, subtruncate, of same colors as those of 
prothorax, white scales few and scattered. Scales of venter of thorax 
and abdomen broadly rounded, grayish white in color. Femora 
piceous to reddish brown, moderately clavate, covered with ovate and 
586455—62—_5 
