HEMEROBIIDAE OF WESTERN NORTH AMERICA — NAKAHARA 211 



may be the closest, but S. texanus can be distinguished readily by the 

 very much smaller size and the brownish forewdng without blotchy 

 markings. 



Genus Pseudomicromus Kriiger 



Pseudomicromus Kriiger, Stettin Ent. Zeit., vol. 83, p. 172, 1922. 



This genus, originally raised on the basis of ambiguous venational 

 characters, has been reinstated by genitalic studies (Nakahara, 1960, 

 p. 30). It is separated from other genera of the Micromus group by 

 the paired aedeagus and by the absence of supraedeagal plate in the 

 tenth sternite in the male. The material examined contained all the 

 species that hitherto have been recorded. 



Pseudomicromus angulatus (Stephens) 



Hemerobius angulatus Stephens, Illustr. British Ins., vol. 6, p. 106, 1836. 



South Dakota: Black Hills [A]. Colorado: Steamboat Springs 



[USNM]. 



Pseudomicromus variolosus (Hagen) 



Micromus variolosus Hagen, Proc. Boston Soc. Nat. Hist., vol. 23, p. 284, 1886. 

 California: San Bernardino Mts. [A]. Colorado: Cheyenne Can- 

 yon [USNM]. Arizona: Chiricahua Mts. [A]; Tucson [USNM]. 



Pseudomicromus subanticus (Walker) 



Hemerobius subanticus Walker, Neuropt. British Mus., pt. 2, p. 282, 1853. 



California: Redding [USNM]. Arizona: Chiricahua Mts. [A]. 

 Texas: BrownsviUe [USNM]. 



Genus Stenomicromus Kriiger 



Stenomicromus Kriiger, Stettin Ent. Zeit., vol. 83, p. 171, 1922. 



The dorsally spine-beset single aedeagus and the huge distal process 

 of the anal plate are diagnostic of this genus. Parameres are separated, 

 connected with each other only by a short bridge near base. The 

 genus consists of the genotype, S. paganus of Europe, and its Nearctic 

 counterpart, S. montanus. 



Stenomicromus montanus (Hagen) 



Micromus montanus Hagen, Proc. Boston Soc. Nat. Hist., vol. 23, p. 279, 1886. 

 Alberta: Waterton Lakes National Park [A]. British Columbia: 

 Alaska Highway [A]. Washington: Olympic National Park, Mt. 

 Rainier, and Mt. St. Helena [A]. *Oregon: Wallowa Mts. and Willa- 

 mette National Forest [A]. Colorado: Dream Lake and Glacier 

 Creek in Rocky Mt. National Park, Gothic [A]. CaUfornia: Castle 

 Crags [A]. 



