170 
femur usually with a median and an apical 
red crossband, apical segment of each tarsus 
shaded with brown; wings hyaline, brown 
shading always present in humeral cell of 
fore wing, this brown often extending almost 
across base of wings; veins and crossveins of 
fore wing very dark brown, those of hind 
wing usually hyaline, sometimes light brown; 
stigmatic area of fore wing not colored, 
crossveins not crowded in region of bulla. 
Abdomen mostly white, apical three ter- 
gites with pinkish-tan shading, each ter- 
gite 3-7 with a pair of black, transverse, 
submedian dashes, these marks occasionally 
present also on tergite 2; genitalia, fig. 341, 
white or light yellow; caudal filaments 
white, basal articulations usually shaded 
with orange-tan or brown. 
NympH.—Length of body 7-8 mm. Pale 
median spot present on anterior margin of 
head. Each tarsal claw with two minute 
ventral denticles near apex. Abdominal 
gills borne by segments 1-6 truncate at 
apexes, seventh pair of gills without tra- 
cheae; abdominal dorsum solid brown, in- 
terrupted by light-colored areas on meson 
of segments 5, 8, and 9, and with a pair of 
lateral, light-colored spots near anterolateral 
angles of tergites 2—7, these lateral spots 
normally covered by gills; venter white, with 
a pair of brown, sublateral spots on sternites 
5-8; posterolateral angles of segments 3-9 
spinelike; sternite 9 with a pair of lateral, 
longitudinal, brown stripes and with two 
large, brown spots at posterior margin; 
caudal filaments white, the middle area of 
each filament with alternating pairs of seg- 
ments brown and white. 
Known from Illinois and Ontario. 
Illinois Records.—AroMA Park: June 4, 
1947, B. D. Burks, 2¢. Aurora: July 9, 
1925, T. H. Frison, 14 ; at light, July 17, 
1927, Frison & Glasgow, 26. Casry: Cat- 
fish Creek, April 29, 1942, H. H. Ross, 1¢. 
Dixon: June 27, 1935, DeLong & Ross, 
36. Exutne: Kankakee River, June 4, 1947, 
B. D. Burks, 18. Granp Tower: May 
30, 1935, Ross & Mohr, 12. Harrispurc: 
at light, Aug. 16, 1937, Ross & Ritcher, 12. 
HAVANA: June 1, 1938, C. O. Mohr, 12. 
KEITHSBURG: July 4, 1946, Burks & San- 
derson, 14. Momence: Aug. 16, 1938, 
Ross & Burks, 14. Monticetto: May 7, 
1936, Ross & Burks, 1g. Oakwoop: June 
5, 1948, Burks & Sanderson, 24 ; June 23, 
1948, B. D. Burks, 5 4 ; Aug. 4, 1939, Burks 
Intinois NatrurAL History SurRvEY BULLETIN 
Vol. 26, Art. 1 
& Riegel, 1¢. Orecon: at light, July 2, 
1946, Burks & Sanderson, 5 4 ; July 9, 1925, 
T. H. Frison, 1%; Rock River, Aug. 5, 
1948, Burks & Stannard, 1@. PuirrsFre.p: 
at light, Aug. 11, 1948, Sanderson & Stan- 
nard, 1¢. Pontiac: Aug. 22, 1938, H. H. 
Ross, 4¢. PropHerstowNn: Rock River, 
July 24-25, 1947, Burks & Sanderson, 1¢. 
Rockrorp: May 13, 1942, Ross & Burks, 
24; May 15, 1946, Ross & Burks, 1 2 ; at 
light, June 29, 1938, B. D. Burks, 1 2 ; July 
12, 1938, Burks & Boesel, 26. Rock 
IsLAND: June 7, 1938, Burks & Riegel, 1 3. 
Rockton: Rock River, June 25, 1947, B. 
D. Burks, 3¢. SERENA: Indian Creek, May 
12-16, 1938, Ross & Burks, 2¢. SoutH 
Betoit: July 2, 1931, Frison, Betten, & 
Ross, 1. URBANA: June 22, 1947, H. H. 
Ross, 16. WitminctTon: at light, Aug. 6, 
1947, Burks & Sanderson, 1 ¢. 
13. Stenonema ares new species 
This species is most closely related to 
Stenonema bipunctatum (McDunnough) in 
having a medianly interrupted, black cross- 
line at the posterior margin of each abdom- 
inal tergite 2-7, but differs in having the 
mesonotum bright Mars orange rather than 
gray-brown or gray-tan; each of abdominal 
tergites 1-7 in ares has a relatively broad, 
Mars orange crossband at the posterior mar- 
gin, and the first fore tarsal segment is one 
half as long as the second, rather than two- 
thirds as long, as in bipunctatum. Specimens 
of ares and bipunctatum which have re- 
mained very long in alcohol are quite dif- 
ficult to separate to species. 
The nymph of ares differs from that of 
bipunctatum in abdominal color pattern and 
in having no ventral denticles on the claws. 
Mate.—Length of body 6-9 mm., of fore 
wing 8-11 mm. Head below level of an- 
tennal sockets white, vertex chrome orange, 
shaded on meson and laterally with Mars 
orange; each antenna with scape Mars 
orange, pedicel yellow, flagellum white, 
somewhat grayed near base; eyes in life 
pearl-gray. Thoracic notum Mars orange, 
apex of meso- and metascutellum white, 
area on meson of mesonotum extending an- 
teriorly from apex of scutellum to outer 
parapsides usually chrome orange, occasion- 
ally becoming grenadine pink; pleuron mostly 
pinkish-tan or testaceous, semimembranous 
area anterior to fore wing base grenadine 
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