Superfamily TENTHREDINOIDEA 65 



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



Mass., p. 583. Nom. nud. 

 Tenthredo (Neynatus) labrata Harris, 1835. In Hitchcock, Rpt. Geol. Mineral. Bot. Zool. 



Mass., p. 583. Nom. nud. 

 Nematus appendiculatus Hartig, 1837. Fam. Blattwespen und Holzwespen, nebst 



Einleitung Naturgesch. Hym., p. 202. 9. 

 Nematus (Diphadnus) fiiscicomis Hartig, 1837. Fam. Blattwespen und Holzwespen, nebst 



Einleitung Naturgesch. Hym., p. 225. 9. 

 Nematus cathoraticus Foerster, 1854. Naturh. Ver. Rheinlande, Verh. 11: 325. 9. 

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

 Nematus pallicomis var. labratus Norton, 1861. Boston Soc. Nat. Hist., Proc. 8: 160. 9. 

 Nematus vitreipennis Kawall, 1864. Soc. Nat. Moscou, Bui. 37: 295. 9. 

 Pristiphora grossulariae Walsh, 1866. Pract. Ent. 1: 123. 9,6. larva. 

 Nematus peletieri Andre, 1880. Spec. Hym. Eur. Alg. 1: 5. 9. 



Nematus pumilus Zaddach, 1883. Phys. Okonom. Gesell. Konigsberg., Schr. 24: 172. 6. 

 Nematus hypobalius Zaddach, 1884. Phys. Okonom. Gesell. Konigsberg., Schr. 25: 154. 9 . 

 Nematus ghilianii Costa, 1894. Prosp. Imen. Ital. 3: 73. 



Biology: Miles, 1932. Bui. Ent. Res. 23: 10-15. 

 serrula Wong and Ross. Maine, N. H., B. C, Wash., Oreg., Calif. 



Pristiphora semda Wong and Ross, 1960. Canad. Ent. 92: 196. 9. 

 siskiyouensis Marlatt. N. S. to N. W. T., Yukon, Alaska s. to Va., Wis., Calif. Ecology: 

 Widespread. Host: Betula, Alnus 

 Pristiphora siskiyouensis Marlatt, 1896 U. S. Dept. Agr. Div. Ent. Tech. Ser. 3: 116. 9, S. 

 Pristiphora betulavora Rohwer, 1920. U. S. Natl. Mus., Proc. 57: 219. 9, cJ. 



Taxonomy: Middleton, 1922. U. S. Natl. Mus., Proc. 61: 24 (larva). 



Biology: Wong, 1954. Canad. Ent. 86: 154. 

 staudingeri (Ruthe). Labrador to Alaska s. to Man., Colo., Alta.; Europe to Siberia. Host: 

 Salix. 

 Nematus staudingeri Ruthe, 1859. Stettin Ent. Ztg. 20: 306. 9, 6. 

 Nematus circularis Kincaid, 1900. Wash. Acad. Sci., Proc. 2: 350. 9. N. syn. 

 Pristiphora hyperborea Malaise, 1921. Ent. Tidskr. 42: 11. 9, S. 

 Pristiphora asperlatus Benson, 1935. Roy. Ent. Soc. London, Trans. 83: 36. 9, 3. 

 sycophanta Walsh. Labrador to Alaska s. to Conn., Va., Mo., Colo., Oreg. Ecology: Widespread. 

 Host: Salix. 

 Pristiphora sycophanta Walsh, 1866. Ent. Soc. Phila., Proc. 6: 263. 9. 

 Pristiphora tibialis Norton, 1867. Amer. Ent. Soc, Trans. 1: 76. 9. 

 Nematus trivialis Kirby, 1882. List Hym. Brit. Mus., v. 1, p. 140. Unnecessary n. name for 



tibialis Norton. 

 Pristiphora murtfeldtiae Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 117. 9. 

 Pristiphora anaka Kincaid, 1900. Wash. Acad. Sci., Proc. 2: 350. 9. N. syn. 

 valvangula Wong and Ross. N. Y. (?) 



Pristiphora valvangula Wong and Ross, 1960. Canad. Ent. 92: 194. S. 



venatta Wong and Ross. Idaho. 



Pristiphora venatta Wong and Ross, 1960. Canad. Ent. 92: 196. 9. 



Genus CROESUS Leach 



Croesus Leach, 1817. Zool. Misc., v. 3, p. 129. 



Type-species: Tenthredo septentrionalis Linnaeus. Monotypic. 



A small holarctic genus characterized by the enlarged, flattened hind basitarsus. Larvae feed 

 externally on the foHage of the host plant. 



Revision: Benson, 1963. Ent. Tidskr. 84: 25 (world species groups). —Smith, 1972. Ent. Soc. 

 Wash., Proc. 74: 169-180 (Nearctic species, adults and larvae). 

 castaneae Rohwer. N. Y., Pa., Md., Va., Ky. Host: Castanea dentata. 



Croesus castaiieae Rohwer, 1915. U. S. Natl. Mus., Proc. 49: 213. 9, cJ. 



