572 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 118 
Scoliocentra tincta (Walker) 
FIGURE 73 
Actora ferruginea Walker, 1849, p. 1066. New synonymy. 
Helomyza tincta Walker, 1849, p. 1092. 
Blepharoptera pubescens Loew, 1862a, p. 224 (Centuria 2, 82). 
Achaetomus pilosus Coquillett, 1907, p. 75.—Aldrich and Darlington, 1908, p. 71. 
Leria fraterna (Loew), Aldrich and Darlington, 1908, p. 79. 
Amoebaleria gigas Garrett, 1921, p. 126. 
Scoliocentra tincta (Walker), Czerny, 1924, p. 142. 
Matu.—Head yellowish orange, darker toward vertex; fronto-or- 
bital plates, ocellar triangle, and vertex dusted with grayish pollen; 
antennae yellow orange with aristae dark brown to black, minutely 
pubescent; anterior fronto-orbital bristles about three-fourths the 
length of the posterior bristle; oral vibrissae strong, several irregular 
rows of long buccal setae; cheek-eye ratio 0.5. 
Thorax uniformly reddish orange; mesonotum usually with a 
faint dark median vitta and a wider vitta on each side; dorsocentrals 
1+3, all but the posterior pair conspicuously weakened; humeral 
bristles weak; prescuttellar bristles present; scutellum bare except 
for 2 pairs of lateral bristles; propleural bristle present, with 0-3 
smaller hairs anterior to the bristle; mesopleura covered with fine 
hairs; pteropleura with fine hairs on the anterior half; hypopleura 
and metapleura bare; sternopleura with a single bristle (rarely 2) in 
the upper hind corner, the remainder of the sternopleura with fine 
hairs, becoming longer and stronger ventrally between the coxae; 
prosternal bristles usually 1 strong pair, but sometimes 1 or 2 addi- 
tional bristles may be found on one or both sides. 
Legs reddish orange, becoming somewhat darker distally on the 
tarsi; all tibiae with dorsal preapical bristle; middle tibia with about 
3 strong and 4 or 5 weaker bristles ventrally at the distal end; tarsal 
segments with lateral apical spines, most prominent on the middle 
tarsi. 
Wings hyaline, with a brownish tinge, but no distinct infuscations. 
Abdomen reddish orange, sometimes with darkened areas in pinned 
specimens; uniformly covered with fine hairlike setae. 
FrMALE.—Similar to male, except that the bristles of the mesonotum 
are uniformly strong; the pilosity of all areas is less pronounced, as 
compared with the male. 
Lenetu.—6.0-8.5 mm. 
Brotocy.—I have trapped adults in screen-wire traps baited with 
beef liver and excrement. 
Distripution.—Alaska, British Columbia, Alberta, Idaho, Cali- 
fornia, Manitoba, Minnesota, Wisconsin, Michigan, Ontario, Penn- 
