Superfamily TENTHREDINOIDEA 67 



hudsoniimagnus Dyar. Maine to N. J. w. to Alaska, Man., Ill, Tex. Host: Populus. 



Neynatus Htidsoiiii magnus Dyar, 1895. Amer. Ent. Sec, Trans. 23: 306. 9, larva. This 

 name is available under Article 26(A) of the Internatl. Code Zool. Nomencl. 



Pteronus populi Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 59. 9. 



Pteronus hudsonii Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 59. 9. Emend. 



Pterojius lombardae Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 73. 6. 



Pteronidea edura MacGillivray, 1920. Canad. Ent. 52: 233. 9. 



Pteronidea effusa MacGillivray, 1920. Canad. Ent. 52: 233. 9. 



Pteronidea effeta MacGillivray, 1920. Canad. Ent. 52: 234. 9. 



Pteronidea emerita MacGillivray, 1920. Canad. Ent. 52: 234. 9. 



Pteronidea enidita MacGillivray, 1920. Canad. Ent. 52: 234. 9. 

 iridescens Cresson. Mont., Wye, Utah w. to B. C, Wash., Oreg., Calif.; Mexico. Host: Salix. 



Nematiis iridescens Cresson, 1880. Amer. Ent. Soc, Trans. 8: 5. 6. 



Pteronus occidentalis Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 48. 9. N. syn. 

 limbatus Cresson. N. B., Que. to Pa. w. to Sask., Ohio. Host: Salix, Populus. 



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



Pteronus harringtoni Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 53. 9, (J. 



Pteronus fylesi Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3:54. 9, 6. 

 ventralis Say. Que. to N. C. w. to Alta., Mont., Colo. Host: Salix. Willow sawfly. 



Nematus ventralis Say, 1824. In Keating, Narr. Long's 2nd Exped., v. 2 (App.), p. 315. 9. 



Nematus suratus Fitch, 1856. N. Y. Agr. Soc, Trans. 3: 315. 9. 



Pteronus latiis Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 48. 9. Preocc. by 

 Nematus latus Cresson, 1880. 



Hypolaepus viereckii Bradley, 1903. Canad. Ent. 35: 47. 9. 



Pteronidea edita MacGillivray, 1920. Canad. Ent. 52: 235. S. 



Biology: Howard, 1888. U. S. Dept. Agr., Insect Life 1: 33-37. — Rohwer, 1915. Ent. Soc. 

 Wash., Proc 17: 197 (mating habits). 



Morphology: Judd, 1955. Ont. Ent. Soc, 85th Ann. Rpt. 1954, p. 32 (anatomy and histology of 

 digestive tract of larva). 



Species Group Atriceps 



atriceps (Marlatt). Wis., Colo., Utah w. to B. C, Wash., Oreg., Calif. 



Pteronus atriceps Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 52. 9. 



Pteronus califomicus Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 60. 9. N. syn. 

 auratus (Marlatt). Wash., Oreg., Calif. 



Pteronus auratus Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 60. 9. 



Amauronematus coquilletti Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 84. 9. 

 N. syn. 

 coloradensis (Marlatt). Alta., Mich., N. Dak., Ariz. w. to Oreg., Calif. 



Pteronus coloradensis Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 52. 9, S. 



Species Group Erythrogaster 



carpini (Marlatt). Conn., N. Y., N. J., Fla. Host: Carpinus. 



Pteronus carpini Marlatt, 1898. Canad. Ent. 30: 303. 9. 

 corylus Cresson. Mass. to Md. w. to Mich., 111. Host: Corylus. 



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



Pteronus coryli Konow, 1905. In Wytsman, Gen. Ins., v. 29, p. 55. Emend. 

 erythrogaster Norton. Que. to Fla. w. to Minn., 111. Host: Ahius. 



Nematus erythrogaster Norton, 1865. Ent. Soc. Phila., Proc 4: 8. 9. 



Pteronus dyari Marlatt, 1896. U. S. Dept. Agr., Div. Ent. Tech. Ser. 3: 58. 9, 6. 



Pteronidea pulchella Rohwer, 1913. U. S. Natl. Mus., Proc. 45: 279. 9. 



Pteronidea alnivora Rohwer, 1920. U. S. Natl. Mus., Proc. 57: 213. 9, d. 



Taxonomy: Middleton, 1922. U. S. Natl. Mus., Proc. 61: 22 (larva). 

 latifasciatus Cresson. N. B. to Pa. w. to Ont., Mich. Host: Betula. 



Nematus latifasciatus Cresson, 1880. Amer. Ent. Soc, Trans. 8: 7. 9. 

 Nematus rufocinctus Harrington, 1893. Canad. Ent. 25: 58. 9. N. syn. 



