48 Hymenoptera in America North of Mexico 



eversmanni acidus MacGillivray. Que., Maine to Pa. w. to Alaska, 111.; East Asia. Host: 



Equisetum. L. eversmanni eversniamii (Kirby) is European. 

 Loderus acidns MacGillivray, 1923. 111. Univ. Bui. 20(50): 20. 9, d. 

 genucinctus niger Rohwer. Wash., Oreg., Calif. Host: Equisetum. L. genucinctus genucinctus 



(Zaddach) is Palaearctic. 

 Loderus niger Rohwer, 1910. Canad. Ent. 42: 49. 9, S. Preocc. in Dolerus but not in 



Loderus. 

 Dolerus napaeus MacGillivray, 1923. Canad. Ent. 55: 65. 9. 

 Dolerus Jiepotulus MacGillivray, 1923. Canad. Ent. 55: 68. 6. 

 Dolerus iiauficus MacGillivray, 1923. Insecutor Inscitiae Menstruus 11: 35. 9. 

 pratorum albifrons (Norton). Newfoundland to Alaska s. to N. Y., Nebr., Calif.; East Asia. 



Host: Equisetum. L. pratorum pratorum (Fallen) is European. 

 Dosytkeus apricus var. albifrons Norton, 1861. Boston Soc. Nat. Hist., Proc. 8: 152. 9. 

 Dolerus minusculus MacGillivray, 1908. Canad. Ent. 40: 126. 9. 

 Loderus accuratus MacGillivray, 1923. 111. Univ. Bui. 20(50): 19. 9. 

 vestigialis apricus (Norton). N. B. to Va. w. to Alaska, Man., Wash., Nebr., Colo. Host: 



Equisetum. L. vestigialis vestigialis (Klug) is European. 

 Tenthredo (Dosytheus) aprica Harris, 1835. In Hitchcock, Rpt. Geol. Mineral. Bot. Zool. 



Mass., p. 583. Nom. nud. 

 Dosytheus apricus Norton, 1861. Boston Soc. Nat. Hist., Proc. 8: 152. 9. 

 Dolerus hictatus MacGillivray, 1908. Canad. Ent. 40: 127. 9. 

 Dolerus femur-ruhnim Rohwer, 1909. Canad. Ent. 41: 9. 9. 

 Loderus acerbus MacGillivray, 1923. 111. Univ. Bui. 20(50): 19. 9. 

 Loderus alticinctus MacGilHvray, 1923. 111. Univ. Bui. 20(50): 20. 9. 

 Loderus ancisus MacGillivray, 1923. 111. Univ. Bui. 20(50): 21. 9. 



Subfamily SUSANINAE 



Revision: Smith, 1969. Ent. Soc. Wash., Proc. 71: 13-23. 



Genus SUSANA Rohwer and Middleton 



Siisana Rohwer and Middleton, 1932. Ent. Soc. Wash., Proc. 34: 93. 



Type-species: Susaua mpressi Rohwer and Middleton. Orig. desig. 



Members of this exclusively North American genus feed on plants of the family Cupressaceae. 



annulata Smith. Calif. (San Mateo Co., Marin Co.). Ecology: Adults collected from Cupressus 

 macrocarpa. 



Susana annulata Smith, 1969. Ent. Soc. Wash., Proc. 71: 22. 9, cJ. 

 cupressi Rohwer and Middleton. S. Calif. Host: Cupressus. 



Susana cupressi Rohwer and Middleton, 1932. Ent. Soc. Wash., Proc. 34: 94. 9, 6. 

 fuscala Wong and Milliron. B. C. Host: Juniperus scopulomm. 



Susana fuscala Wong and Milliron, 1972. Canad. Ent. 104: 1025-1026. 9, larva. 

 juniperi (Rohwer). N. Mex. (Las Vegas Hot Springs). Host: Juniperus. 



Platycampus juniperi Rohwer, 1911. U. S. Natl. Mus., Proc. 41: 386. 9. 

 oregonensis Smith. Idaho, Nev., Oreg. Host: Juniperus. 



Susana oregonensis Smith, 1969. Ent. Soc. Wash., Proc. 71: 21. 9. 

 punctata Smith. Calif. (Inyo Co.). Ecology: Adult collected from Juniperus. 



Susana punctata Smith, 1969. Ent. Soc. Wash., Proc. 71: 19. 9. 

 rufa Smith. N. Mex., Ariz. (Chiricahua Mts.). 



Susana rufa Smith, 1969. Ent. Soc. Wash., Proc. 71: 21. 9. 



Subfamily NEMATINAE 



The Nematinae are a large and diverse group, especially in habits and host plants. It is the 

 dominant sawfly group in the arctic and subarctic regions of the world where they comprise 

 nearly the entire sawfly fauna. Their abundance decreases rapidly southward and only a few 

 species extend into Mexico. Only two species, both Pristiphora, are known from South America. 



