212 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iia 



Genus Ameromicromus Nakahara 



Ameromicroynus Nakahara, Mushi, vol. 34, p. 33, 1960. 



This genus is endemic in North America, consisting of a single 

 species, A. posticus. It is well characterized by the presence of a 

 large subquadrate supraedeagal plate in the tenth sternite, which 

 covers the aedeagus dorsally like a hood, and by the completely 

 fused parameres, the apical two-thirds of which is in the form of a 

 long pointed process and the basal one third, in that of a thin blade 

 (Nakahara, 1960, p. 33). Kriiger's Paramicromus is a homonym. 



Ameromicromus posticus (Walker) 



Hemerobius posticus Walker, Neuropt. British Mus., pt. 2, p. 283, 1853. 



*Washington: St. Andrews Creek, 3800 ft., Mt. Ramier, July 17, 

 1953, a single male [A]. 



Genus Hemerobius Linnaeus 



Hemerobius Linnaeus, Systema naturae, ed. 10, vol. 1, p. 549, 1758. 



All but two {H. nigrans and H. alpestris) of the previously recorded 

 species of this genus are represented. There is an additional species 

 in the USNM collection that I am unable to identify. 



Hemerobius humulinus Linnaeus 



Hemerobius humulinus Linnaeus, Systema naturae, ed. 10, vol. 1, p. 550, 1758. 



*Alaska: Teller [USNM]. *Washington: Mt. Hood and Alerritt 

 [A]. This conmaon Holarctic species, previously recorded from British 

 Columbia, seems to be very rare in western North America. 



Hemerobius pacificus Banks 



Hemerobius pacificus Banks, Trans. American Ent. Soc, vol. 24, p. 24, 1897. 



British Columbia: Wellington [USNM]. California: Kings Canyon 

 National Park [A]; Mill Valley, Van Damme State Park, Inverness, 

 Berkeley, Carmel, and San Jacinto Mts. [USNM]. Utah: Plam City 

 and Logan [USNMJ. Arizona: White Alts, and Chiricahua Mts. [A]. 

 New Mexico: Frijoles Canyon in Bandelier National Monument. 



In spite of the great difficulty in distinguishing the female of 

 H. pacificus from that of H. neadelphns, I referred all the specimens 

 to the former, which show accentuated asymmetry of the apical part 

 of forewing with more pointed apex. 



Hemerobius neadelphus Gurney 



Hemerobius neadelphus Gurney, Ann. Ent. Soc. America, vol. 41, p. 214, 1948. 



British Colmnbia: Nanaimo and Wellington [USNM]. *Washing- 

 ton: Mt. St. Helena, Olympic National Park, and Alt. Rainier [A]. 

 Oregon: Blue Mts. [A]. California: Lost Creek in Lassen National 

 Park, Hatchet Pass near Burne\", King's Canyon National Park, and 



