Superfamily TENTHREDINOIDEA 59 



rufocinctus MacGillivray. Conn. 



PachynematHs rufocinctus MacGillivray, 1916. Conn. State Geol. and Nat. Hist. Survey 

 Bui. 22: 117. 9, (J. 

 vagus (Fabricius). Ont. to Alta., Idaho s. to N. Y., 111., Minn., Mont.; Europe to Siberia. Ecology: 

 Widespread. Host: Carex, Salix. 



Tenthredo vaga Fabricius, 1781. Species Insectorum, v. 1, p. 415. 



Nematus leucogaster Hartig, 1840. Stettin Ent. Ztg. 1: 23. 



Nemahis inconspicuus Kirby, 1882. List Hym. Brit. Mus., v. 1, p. 141. 9. 



Pachynematus corticosus MacGillivray, 1901. N. Y. State Mus., Bui. 47: 584. 9. 



Pachynematus roscidus MacGillivray, 1901. N. Y. Ent. Soc, Jour. 29: 31. 9. 



Unplaced Taxa of Group Vagas 



abdominalis Marlatt. Wash. 



Pachynematus abdoinmalis Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 104. 9. 



carolinensis Marlatt. N. C. 



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



koebelei Marlatt. Oreg. 



Pachynematus koebelei Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 108. 6. 



robustiformis Rohwer. Colo. 



Pachynematus robustiforrnis Rohwer, 1908. N. Y. Ent. Soc, Jour. 16: 108. 9. 



robustus Marlatt. Mont. 



Pachyyiematus robustus Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 102. 9. 



Species Group Rumicis 



freyi Lindqvist. N. W. T., Yukon; Europe to Siberia. 



Pachynematus freyi Lindqvist, 1949. Notulae Ent. 28: 81. 9. 

 rumicis (Linnaeus). Man., Alaska; Iceland, Europe to Siberia. Host: Rumex. 



Tenthredo rumicis Linnaeus, 1758. Syst. Nat., Ed. 10, v. 1, p. 559. 



Ne7natus flavipennis Cameron, 1876. Ent. Monthly Mag. 12: 189. 9. 



Genus PIKONEMA Ross 



Pikonema Ross, 1937. 111. Biol. Monog. 15(2): 86. 



Type-species: Nematus dimmockii Cresson. Orig. desig. 



Larvae of this Nearctic genus feed on species of Picea. 

 Revision: Ross, 1938. Ent. Soc. Wash., Proc. 40: 17-20 (adults and larvae). 

 Taxonomy: Wong, 1951. Ont. Ent. Soc, Ann. Rpt. 1951, p. 65 (cocoons). 

 alaskensis (Rohwer). Newfoundland to Alaska s. to Mass., Mich., Minn., Wyo., Idaho, B. C. 



Ecology: Widespread. Host: Picea canadensis, P. engelmannii, P. excelsa, P. glauca, P. 

 mariana, P. rubens, P. pungens, P. sitchensis, P. abies. Yellowheaded spruce sawfly. 

 Pachynematus alaskensis Rohwer, 1911. U. S. Natl. Mus., Proc. 41: 387. 9, S. 

 Pachynematus piceae Rohwer, 1911. U. S. Natl. Mus., Proc. 41: 387. 9, 6. 



Biology: Brown, 1938. Ont. Ent. Soc, Ann. Rpt. 1937, p. 14. —Nash, 1939. Jour. Econ. Ent. 

 32: 330-334. —Brown, 1941. Canad. Dept. Agr., Pub. 712, p. 6. — Schaffner, 1943. Jour. 

 Forestry 41: 585. —Reeks and Smith, 1945. Acad. Nat. 2: 11. —Bradley, 1951. Canad. Ent. 

 83: 130. (parasites). —Wilson, 1962. U. S. Dept. Agr., Forest Pest Leaflet 69, 4 pp. 

 dimmockii (Cresson). Newfoundland to N. W. T., B. C. s. to N. B., N. H., Man., Colo., Wyo., 

 Idaho. Ecology: Widespread. Host: Picea canadeiisis, P. engelmannii, P. glauca, P. 

 mariajia, P. rubens, P. sitchensis, P. abies. Greenheaded spruce sawfly. 

 Nematus dimmockii Cresson, 1880. Amer. Ent. Soc, Trans. 8: 6. 9. 

 Nematus ochreatus Harrington, 1889. Canad. Ent. 21: 95. 9. 



Biology: Brown, 1938. Ont. Ent. Soc, Ann. Rpt. 1937, p. 14. —Brown, 1941. Canad. Dept. 

 Agr., Pub. 712, p. 6. —Reeks and Smith, 1945. Acad. Nat. 2: 11. 



ruralis (Cresson). Oreg., Calif., Nev. 



Nematus ruralis Cresson, 1880. Amer. Ent. Soc, Trans. 8: 5. 9. 



