286 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
Smicronyx perpusillus Casey 
Smicronyx perpusillus Casey, Ann. New York Acad. Sci., vol. 6, pp. 405-406, 
1892. Type: Female, Enterprise, Fla.. USNM 36714 (T. L. Casey 
collection). 
Smicronyx minutissimus Blatchley, Journ. New York Ent. Soc., vol. 36, p. 244, 
1928. New synonymy. Type: Male, ‘‘ Dunedin, Fla.,’’ April 20, 1925, 
collected by W.S8. Blatchley, Purdue University (W. 8. Blatchley collection). 
Description: Rostra of both sexes piceous, moderately curved, 
only slightly tapered from base to apex; squamose and closely but not 
coarsely punctate behind antennal insertions; finely punctate and 
faintly bicarinate before antennal insertions in male; smooth, shining, 
sparsely punctate before antennal insertions in female. Head piceous, 
thinly squamose in front and above eyes. Antennal scape, funicle, and 
club piceous to rufous. Prothorax black, reddish near apex; sides sub- 
parallel until convergent near apex; disk covered with elliptic punc- 
tures, intervals faintly raised into wavy rugae; scales white, ovate 
(except setiform scales) ; prosternum moderately emarginate, distinctly 
concave. 
Elytra black, each interval bearing two rows of white or light 
brown, ovate, nearly contiguous scales. Underside of thorax and 
abdomen black, covered with ovate white scales. Femora rufous, 
covered with linear and ovate white scales. Tibiae rufopiceous, cov- 
ered with elongate, white scales. Tarsirufopiceous, third segment dis- 
tinctly broader than first two; fourth segment extending well beyond 
third; claws connate near their bases, moderately divergent. 
MrasurREmMEnts: The following measurements were taken from the 
type specimen (a female), and a male and a female from Crescent 
City, Fla. (collection of B. D. Valentine). All measurements are in 
millimeters: 
Male Females 
Mean Extremes 
Body length 1. 90 1. 70 1. 60-1. 80 
Elytra length 1. 40 1. 20 1. 10-1. 30 
Elytra width at base 0. 79 0. 69 0. 65-0. 73 
Prothorax length 0. 49 0. 45 0. 45-0. 46 
Prothorax width 0. 56 0. 52 0. 45-0. 59 
Rostrum length 0. 76 0. 68 0. 65-0. 72 
Rostrum length before antennal 0. 30 0. 33 0. 30-0. 36 
insertion 
Funicular segment 2 length 0.068 0. 068 
Funicular segment 3 length 0.034 0.034 
Biotocy: The single host-plant record was taken from the material 
examined: “On Ambrosia artemisiifolia,” Crescent City, Fla., Sept. 14 
(B. D. Valentine). 
Discussion: The few specimens examined of this species resemble 
S. corniculatus (Fahraeus) but differ from that species in having 
