SMICRONYX WEEVILS—ANDERSON 283 
Smicronyz fallax Dietz, Trans. Amer. Ent. Soc., vol. 21, p. 158, 1894 (preoccupied 
by Micronyx fallax Gyllenhal, in Schoenherr, Genera et species curculioni- 
dum... , vol. 3, 1836). Lectotype, here designated: Male, Luling, Texas, 
MCZ 1908 (Dietz collection). 
Smicronyx fallaciosus Klima, in Schenkling, Coleopterorum catalogus ..., vol. 28, 
part 140, p. 95, 1934 (replacement name for Smicronyx fallax Dietz, 1894). 
New synonymy. 
Description: Rostrum of male rugulose punctate behind antennal 
insertions; somewhat rugulose, deeply punctate before antennal inser- 
tions; similar but more tapered, smoother, more shining, sparsely and 
finely punctate before antennal insertions in female; squamose behind 
antennal insertions in both sexes, scales forming a distinct tuft on each 
side of base of rostrum. Antennae reddish brown to piceous, their 
scales grayish white. Prothorax reddish brown to piceous, moderately 
rounded on sides, moderately convex dorsally; punctures confluent, 
interspaces forming wavy ridges running anterolaterally from midline; 
scales a mixture of brownish and light gray, oriented toward midline, a 
few light scales forming a short median vitta near base. 
Elytra widest at base, humeri prominent, declivities distinct; scales 
imbricate, white, grayish, and light brown in color; white scales 
grouped in small, scattered patches, dark scales varying in intensity of 
color, causing some specimens to appear lighter than others. Scales of 
venter light gray, broader and more rounded than those of dorsum. 
Femora reddish brown, covered with a mixture of ovate and elongate 
grayish white scales. Tibiae reddish brown, covered with linear 
grayish white scales. ‘Third segment of tarsus broader than first two 
segments, deeply bilobed, fourth segment rather elongate, claws con- 
nate near their bases, fairly divergent. Median lobe of male genitalia 
(fig. 76) moderately elongate, lightly sclerotized at middorsum, 
slightly expanded at apex. Arms of spiculum ventrale of female form- 
ing a fairly well-defined V (fig. 126). 
MerasureMeEnts: The following measurements were taken from 5 
males and 3 females from Oswego, N.Y. (CU), 6 males and 6 females 
from Jeannette, Pa. (CM), 4 males and 6 females from Valley of the 
Black Mountains, N.C. (AMNH). All measurements are in milli- 
meters: Males Females 
Mean Extremes Mean Extremes 
Body length 2. 35 2. 10-2. 60 2. 35 2. 20-2. 60 
Elytra length 1. 66 1. 40-1. 90 1.67 1. 40-1. 85 
Elytra width at base 0. 94 0. 80-1. 10 0. 94 0. 80-1. 10 
Prothorax length 0. 61 0. 48-0. 70 0. 62 0. 55-0. 70 
Prothorax width 0. 70 0. 55-0. 80 0. 71 0. 60-0. 80 
Rostrum length 0. 88 0. 75-1. 00 0. 97 0. 90-1. 00 
Rostrum length before 0. 36 0. 30-0. 40 0. 49 0. 45-0. 55 
antennal insertion 
Funicular segment 2 length 0.076 0.068-0.085 0.087 0. 085-0. 102 
Funicular segment 3 length 0.050 0.034-0.051 0.052 0. 051-0. 068 
