468 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 105 



Sisyra fuscata (Fabricius) 



FiouRB 13; Plate 1, fioure 2 



Hemerobius fuscatus Fabricius, 1793, p. 84 (Denmark). — Stephens, 1836, p. 114, 



pi. 30, fig. 4.— Walker, 1853, p. 296. 

 Hemerobius nitiduJus Stephens (not Fabricius), 1836, p. 114 (England). — Hagen, 



1858, p. 25. 

 Hemerobius confinis Stephens, 1836, p. 115 (England). — Hagen, 1858, p. 25. 

 Sisyra fuscata Burmeister, 1839, p. 976.— Wesmael, 1841, p. 213.— Hagen, 1858, 



p. 25.— McLachlan, 1868, p. 167.— Navds, 1935, p. 43.— Killington, 1936, 



p. 230. 

 Sisyra fuscata var. nigripennis Navds, 1935, p. 44. 



Sisyra morio Burmeister, 1839, p. 976 (Germany). — Hagen, 1866, p. 460. 

 Sisyra nigripennis Wesmael, 1841, p. 213 (Belgium). — Hagen, 1866, p. 460. 

 Branchiotoma spongillae Westwood, 1842, p. 105, pi. 8 (larva only). — Hagen, 



1851, pp. 185-186; 1866, p. 388. 

 Hemerobius fumatus Motschulsky, 1853, p. 20 (Russia). — Hagen, 1866, p. 412. 



Head with vertex blackish brown, shining, narrow median blackish 

 streak over coronal sulcus usually not pronounced; face blackish 

 brown with the exception of the clypeus and labrum, which are 

 yellowish; palpi brownish; antenna! segments brownish black to 

 black, of approximately 46 segments; legs yellowish to light brownish 

 with meso thoracic and metathoracic coxae brown; thorax blackish 

 brown; abdomen blackish brown. 



FoREWiNG (pi. 1, fig. 2): Average length female 5 mm., male 4.7 

 mm., average width female 2.1 mm., male 2 mm.; apex rounded, 

 oval; membrane more or less uniformly light brown (sometimes faint 

 indications of light bro^vn streaks, particularly near cubital area 

 toward inner margin) ; longitudinal veins brown; pterostigma slightly 

 darker than membrane; 112 usually not forked basad to level of 

 junction of Sc and Rl ; 114 + 5 usually forked more deeply from margin 

 than R3, distad to or at about level of junction of Sc and Rl ; MPl+2 

 usually forking into almost even branches to margin; Cul with 3-5 

 branches to margin; approximately 11-15 costal cross-veins before 

 pterostigma; usually three radial cross-veins; 1st r above and near 

 midpoint of Rs (occasionally near fork of R4+5 from Rs), 2d r 

 usually above R2 near forking of R2 and R3 before fork (occasionally 

 to Rs) and 3d r to R2 or R2 terminal fork, below pterostigma; marginal 

 forking well-developed. 



Hind WING (pi. 1, fig. 2): Average length female approximately 4.3 

 mm., male 4.2 mm., average width female 2 mm., male 1.8 mm.; 

 membrane almost hyaline, tinted with light brown, pterostigma 

 darker brown; R2, R3, and R4 + 5 with terminal forks usually distad 

 of level of junction of Sc and Rl; R2 and R44-5 usually forked more 

 deeply than R3; MA forked basad of above point; Cul with about 4-6 

 branches to margin; usually two radial cross-veins, 1st r slightly 



