Superfamily TENTHREDINOIDEA 71 



unicolor (Marlatt). Calif. 



Pteronus unicolor Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 72. 9. 



Unplaced Taxa of Nematus Panzer 



integer Say. Ind. 



Tenthredo (Nematus) Integra Harris, 1835. In Hitchcock, Rpt. Geol. Mineral. Bot. Zool. 

 Mass., p. 583. Nom. nud. 



Nematus integer Say, 1836. Boston Jour. Nat. Hist. 1: 218. 9. 

 minutus (Marlatt). Wash. (Olympia). 



Pachynematus minutus Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 110. S. 



nigristigmus (Provancher). Que. 



Emphyt2is nigristigma Provancher, 1888. Addit. Corr. Faune Ent. Canada, Hym., p. 348. 

 9. 

 obscurus Norton. Mass. 



Nematus obscurus Norton, 1861. Boston Soc. Nat. Hist., Proc. 8: 160. 9. 



pacificus (Marlatt). Wash. (Olympia). 



Pteronus pacificus Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 49. 9. 

 semirufus Kirby. Mass. 



Tenthredo (Neviatus) fulvipes Harris, 1835. hi Hitchcock, Rpt. Geol. Mineral. Bot. Zool. 

 Mass., p. 583. Nom. nud. 



Nematiis fulvipes Norton, 1861. Boston Soc. Nat. Hist., Proc. 8: 159. 9. Preocc. by Fallen, 

 1808. 



Nematus semirufus Kirby, 1882. List Hym. Brit. Mus., v. 1, p. 148. N. name for fulvipes 

 Norton. 



Nematus flavipesil) Smith, 1966. Ent. Soc. Wash., Proc. 68: 248. 

 tetraopsis Provancher. Calif. 



Nematus tetraopsis Provancher, 1895. Nat. Canad. 22: 79. 9. 

 wrangeli (Marlatt). Alaska. 



Pachynematus wrangeli Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 109. 6. 



Pteronus rivularis Kincaid, 1900. Wash. Acad. Sci., Proc. 2: 358. S. 



Genus PONTANIA Costa 



Pontania Costa, 1859. Fauna del Regno di Napoli, Imen., pt. 3, p. 20. 



Type-species: Nonatus gallicola Stephens. Desig. by Marlatt, 1896. 



Larvae of this large, holarctic genus form closed, pea-shaped or bean-shaped galls on the 

 leaves of Salix or Populus. This genus is in need of revision, and the following is primarily a list 

 of the described species and their type localities except for the work by Benson (1960). Though 

 Benson (1960) established species groups, many of the North American forms have not been stu- 

 died adequately to permit such an arrangement. 



Revision: Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 20-43. 



Taxonomy: Benson, 1960. Brit. Mus. (Nat. Hist.) Ent, Bui. 8: 369-384. —Benson, 1962. Brit. 

 Mus. (Nat. Hist.) Ent., Bui. 12: 403-404 (holarctic species). 



Biology: Smith, 1970. Ent. Soc. Amer., Ann. 63: 36-51. 



Morphology: Smith, 1968. Ent. Soc. Amer., Ann. 61: 1-389-1407. 

 agilis (Cresson). Nev. 



Nematus agilis Cresson, 1880. Amer. Ent. Soc, Trans. 8: 9. cJ. 

 arctica (MacGillivray). N. W. T., Yukon, Alaska, Man. Ecology: Forms leaf galls. Host: Salix 

 reticulata. 

 Euura arctica MacGillivray, 1919. Rpt. Canad. Arctic Exped. 1913-1918, v. 3G, p. 5G. 9. 

 Euura arbortiva MacGillivray, 1919. Rpt. Canad. Arctic Exped. 1913-1918, v. 3G, p. 4G. 9. 

 Pontania delicatula MacGillivray, 1919. Rpt. Canad. Arctic Exped. 1913-1918, v. 3G, p. 8G. 



6. 

 Pontania deminuta MacGilHvray, 1919. Rpt. Canad. Arctic Exped. 1913-1918, v. 3G, p. 9G. 

 9. 



