May, 1953 
dominal sternites a faint tan; antennae 
white; legs white, with light brown shading 
at apexes of femora and bases of tibiae; 
abdominal gills hyaline, with tracheae purple 
and showing a few minute, lateral branches; 
posterolateral angles of abdominal tergites 
8 and 9 produced as spines; caudal filaments 
tan. 
Known from Illinois, New York, Ohio, 
and Ontario. 
Illinois Records.—AtTo Pass: branch of 
Clear Creek, May 23, 1946, Mohr & Burks, 
1g. Eppyvitte: Belle Smith Spring, June 
7, 1946, Mohr & Burks, 1¢. MuwNcIE: 
June 26, 1948, L. J. Stannard, 16. Wotr 
Lake, Hutchins Creek: May 14-25, 1940, 
Mohr & Burks, 166, 199, 22 N; May 3], 
1940, B. D. Burks, 76, 122; May 14-29, 
1946, Mohr & Burks, 446, 192,4N. 
7. Paraleptophlebia mollis (Eaton) 
Cloe mollis Hagen (1861:53). Nomen nudum. 
Leptophlebia mollis Eaton (1871:88). 
Matce.—Length of body and of fore wing 
8 mm. Head, thorax, and apex of abdomen 
dark brown; abdominal segments 2-7 en- 
tirely white, without markings; wings hy- 
aline, with veins and crossveins colorless; 
genital forceps, fig. 208, white, penis lobes 
tan; caudal filaments white. 
Known from the northeastern states and 
southeastern Canadian provinces. 
8. Paraleptophlebia volitans 
(McDunnough) 
Leptophlebia volitans McDunnough 
(19245: 95). 
Matce.—Length of body and of fore wing 
5-6 mm. Head, thorax, and apex of ab- 
domen dark brown; abdominal segment 2 
shaded with brown, segments 3-7 white, 
with brown markings at posterior margins 
of tergites and in spiracular areas; wings 
hyaline, with veins and crossveins colorless; 
genital forceps, fig. 209, white, and penis 
lobes tan; caudal filaments white. 
Known from the Appalachian region and 
southeastern Canada. 
9. Paraleptophlebia guttata 
(McDunnough) 
Leptophlebia guttata McDunnough 
(1924: 95). 
Mave.—Length of body and of fore wing 
5-6 mm. Head, thorax, and apex of ab- 
Burks: THE MAyr iss oF ILLINOIS 93 
domen very dark brown; abdominal seg- 
ments 2—7 white, with a pair of brown spi- 
racular dots on each tergite; wings hyaline, 
with veins and crossveins colorless; genital 
forceps, fig. 210, white, penis lobes light 
yellow-brown; caudal filaments white. 
Known from the northeastern states and 
eastern Canadian provinces. 
10. Paraleptophlebia strisula 
(McDunnough) 
Leptophlebia strigula McDunnough 
(19325: 209). 
Matve.—Length of body and of fore wing 
7 mm. Head, thorax, and apex of abdomen 
brown; abdominal segments 2—7 white, with 
fairly extensive, brown shading near pos- 
terolateral angles of each tergite, a longi- 
tudinal, dark brown line present in each 
spiracular area; wings hyaline, with cross- 
veins colorless and longitudinal veins stained 
with tan; genital forceps, fig. 211, white, 
penis lobes tan; caudal filaments white. 
Known from Ontario and Pennsylvania. 
19. THRAULODES Ulmer 
Thraulodes Ulmer (1920a:33). 
This genus includes but two Nearctic 
species, although Ulmer (1920c: 116) as- 
signed nine Neotropical and Mexican species 
to it. 
The adults of Thraulodes are of medium 
size, with mostly tan or yellow-brown bodies 
and clear wings. The wing veins are strong 
and usually brown; the crossveins, as weil 
as the longitudinal veins, fig. 188, are quite 
well developed. In the fore wing, the pos- 
terior branch of the outer fork (R.) is not 
strongly bent posteriorly near its origin, and 
vein M is branched at about mid-length. 
There are two long, cubital intercalary veins 
which are joined to the veins Cu, and Cu, 
by strong crossveins. The hind wing has a 
costal projection, and vein Sc ends just 
distad of the costal angulation. The cross- 
veins of the hind wing are restricted to the 
area near the costal angulation. 
The fore tarsus in the males is slightly 
shorter than the fore tibia. The male genital 
forceps arise from an undivided base and 
have the two apical segments of each arm 
relatively minute; the penis lobes are divided 
to the bases and bear apical appendages. 
The nymphs have three-segmented labial 
and maxillary palps, with the maxillary palp 
