530 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 113 
Genus Lutomyia Aldrich 
Lutomyia Aldrich, 1922, p. 108.—Czerny, 1924, p. 130.—Sabrosky, 1949, p. 2- 
Criddleria Curran, 1929, p. 31.—Czerny, 19380, p. 440. 
Sabrosky’s (1949) treatment of Lutomyia is adequate for identifying 
the known species of this North American genus. Much of the 
material presented here is based on Sabrosky’s work. 
Characters of this genus are as follows: head higher than long; 
anterior fronto-orbital bristle weaker than the posterior bristle; 
dorsocentrals 1+3; scutellum bare except for 2 pairs of lateral bristles; 
propleural bristle present; mesopleuron bare except for occasional 
setae in anterior corner near propleuron; 1 (sometimes 2) sternopleural 
bristle in upper hind corner; remainder of pleura bare; prosternal 
bristles absent; middle tibia with dorsal preapical bristle and several 
ventral apical bristles, and sometimes additional anterodorsal bristles 
in certain species; middle femur with strong anterior bristles; anterior 
crossvein proximad of the apex of the first vein and close to the base 
of the discal cell; second vein parallel to the first vein and costa and 
lying close to or in contact with the costa. 
Lutomyia is incorrectly placed in Czerny’s (1924) key, inasmuch as 
it is included with those genera having prosternal bristles. 
Key to the Species of Lutomyia 
(After Sabrosky, 1949) 
1. Midtibia with several strong anterodorsal bristles midway on the tibia; male 
with fine weak hairs ventrally on the hind femur . . . hemiptera (Curran) 
Midtibia without strong anterodorsal bristles midway on the tibia, at most a 
row of 3 to 6 short, slightly thickened hairs on the apical third. . . . 2 
2. Entire body reddish yellow; second vein meeting costa just beyond the tip of 
first vein and closely apposed to costa from there to a point beyond the 
hind crossvein; fore crossvein less than twice its length from the base of the ; 
discal cell; male with a row of 12 unusually strong black posteroventral 
spines on the hind femur. . . . . . spurea Aldrich 
Thorax black, heavily gray mollis: pdenen reddish yellow to blackish; 
second vein throughout its length close to but distinctly separated from 
costa; fore crossvein 3.5 to 4 times its length from base of discal cell. . . 3 
3. Frontal vitta black; front broad, nearly 3 times the width of an eye, slightly 
but distinctly narrowed anteriorly; midtibia without bristles anterodorsally; 
male with a row of strong black posteroventral spines on the hind femur. 
aldrichi Sabrosky 
Frontal vitta orange to reddish; front narrower, 1.9 to 2.1 times the width of 
an eye, the sides parallel; midtibia with bristlelike hairs in the apical third 
of the anterodorsal row; male without a row of strong posteroventral spines 
onthe hind femur. .'. < « «\s 4'h 5 spa i). .-. ‘distinetayGarcens 
Lutomyia spurca Aldrich 
Lutomyia spurca Aldrich, 1922, p. 109.—Czerny, 1924, p. 130 
