HEMEROBIIDAE OF WESTERN NORTH AMERICA — NAKAHARA 209 



The brown-tinted membrane of forewing without maculation renders 

 this species unique among the Nearctic Sympherobius. In order to 

 include this species, Carpenter's key may be modified by introducing 

 a new couplet 1' after couplet 1 (forewing with radial cross vein): 



r. Forewing membrane practically uniformly tinted with brown, without 



markings S. brunneus 



Forewing membrane with brown or grey markings . Carpenter's couplet 2 



Sympherobius barberi (Banks) 



Hemerobius barberi Banks, Proc. Ent. Soc. Washington, vol. 5, p. 241, 1903. 



Arizona: Williams, paratype no. 6798 [USNM]. Utah: Provo 

 [USNM]. Texas: Kerrville and San Antonio [USNM]. 



Sympherobius perparvus (McLachlan) 



Hemerobius perparvus McLachlan, Ent. Monthly Mag., vol. 6, p. 22, 1869. 



*Utah: Tooele Co. [USNM]. California: Redding and Red Bluff 

 [USNM]. Texas: Kerrville and Rankin [USNM]. 



Sym,pherobius beameri Gurney 



Sympherobius beameri Gurney, Ann. Ent. Soc. Amer., vol. 41, p. 220, 1948. 

 California: Rosamond, paratype no. 58600 [USNM]. 



Sympherobius killingtoni Carpenter 



Sympherobius killingtoni Carpenter, Proc. Amer. Acad. Arts Sci., vol. 74, p. 238, 



1940. 



Arizona: Williams [USNM]. New Mexico: Las Vegas, paratype 

 no. 55224 [USNM]. 



Sympherobius texanus^ new species 



Figure 2; Plate 1 (Figure 2) 



Holotype d": Kerrville, Texas, May 1954. Allotopotype 9, and 1 

 paratopotype (without abdomen): June 1954. All collected by L. J. 

 Bottimer. Right forewing (dry) and dissected parts of genitalia (in 

 balsam) of holotype mounted on two slides. USNM type 66175. 



Face yellow, vertex somewhat more brownish. Antennae brown, 

 darker toward apex. Pronotum pale brownish, with faint indication 

 of yellowish median streak; meso- and metanotum yellow, with a 

 large brownish patch on each side of metanotum. Abdomen yellow- 

 ish, darker toward apex. 



Forewdng slender, 3 mm. m length, 1.25 mm. m width, but broadly 

 rounded beyond middle, and hindmargin nearly straight, not curved out 

 at the region of cubital forks; costal area very narrow. Membrane 

 predominantly pale brown because of the more or less diffuse macula- 



