. Bulletin. Natural history; Natural history. 112 Illinois Natural History Survey Bulletin Vol. 26, Art. 1 4. Isonychia sicca (Walsh) Biiflis sicca (1862:371). The Icctotype male of this species is in the Museum of Comparative Zoology. Male.—Len^rth of body 9-11 mm., of fore wing 10-12 mm. Head dark red-brown, antennae brown, fading to light yellow at tips of flagella. Thorax dark red-brown; wings hyaline, veins and crossveins brown; each fore leg with femur and tibia red- brown, tarsus yellow, with apex of each 29, 1892, Forbes & Shiga, 19. Wilming- ton: at light, Aug. 6, 1947, Burk
. Bulletin. Natural history; Natural history. 112 Illinois Natural History Survey Bulletin Vol. 26, Art. 1 4. Isonychia sicca (Walsh) Biiflis sicca (1862:371). The Icctotype male of this species is in the Museum of Comparative Zoology. Male.—Len^rth of body 9-11 mm., of fore wing 10-12 mm. Head dark red-brown, antennae brown, fading to light yellow at tips of flagella. Thorax dark red-brown; wings hyaline, veins and crossveins brown; each fore leg with femur and tibia red- brown, tarsus yellow, with apex of each 29, 1892, Forbes & Shiga, 19. Wilming- ton: at light, Aug. 6, 1947, Burks & San- derson, 1 6 . 5. Isonychia rufa McDunnough Isonychia rufa Mcnwiiiiough (1931f:162). Male.—Length of body and of fore wing 10-12 mm. Head light brown, antennae brown, shading to white at apexes of fla- gella. Thorax bright red-brown, sternum dull red-brown or beige; wings Fig. 254.—Isonychia sicca, mature nymph, lateral aspect. tarsal segment darkened. Abdomen dark red-brown or very dark purplish red, venter slightly lighter than dorsum; genitalia, fig. 232, light brown or yellow-brown; caudal filaments light yellow to white, with articu- lations near bases darkened. Female.—Length of body 10-12 mm., of fore wing 12-14 mm. Head tan, shaded with red-brown. Thorax yellow-brown, with sternum darker brown; wings as in male. Abdomen dull, dark red-brown or purplish red, becoming lighter, yellow brown on apical three segments; caudal filaments light yellow, articulations not darkened. Known from Illinois, Iowa, Nebraska, and Ontario. Illinois Records.—East Dubuque: at light, July 21, 1927, 59. Foster: Missis- sippi River, July 4, 1939, B. G. Berger, 1 S . Fulton: July 20, 1927, Frison & Glasgow, li, 119. Harrisburg: at light, Aug. 16, 1937, Ross & Ritchcr, 16, 19. Havana: 1 9 ; June 23, 1894, F. Smith, 1 9 ; June 24, 1894, 19; June 25, 1894, 19. Homer: June 30, 1925, T. H. Frison, 19. Mount Carmel: June 30, 1906, 3 9 . Oregon: July 9, 1925, T.
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