22 Hymenoptera in America North of Mexico 



pectoralis (Leach). Maine to Fla. w. to Ont., Sask., Mich., Ill, Mo., Tex. Host: Ahius, Betula, 

 Corylus, Crataegus, Salix. Birch sawfly. Probably a species complex. 

 Hylotoma pectoralis Leach, 1817. Zool. Misc., v. 3, p. 124. 9. 



Hylotoma dulciaria Say, 1824. In Keating, Narr. Long's 2nd Exped., (App.). p. 314. 9. 

 Arge salicis Rohwer, 1912. U. S. Natl. Mus., Proc. 43: 206. 9,6. 



Biology: Schwarz, 1909. Ent. Soc. Wash., Proc. 11: 106-108. -Wong, 1954. Canad. Ent. 86: 

 154. —Smirnoff, 1971. Ent. Soc. Quebec, Ann. 16: 86-88 (protozoan parasite). 

 scapularis (Klug). Maine to Fla. w. to Ont., Minn., Mo., Tex. Host: Alnus, Betula, Quercus, 

 Ulmus. Probably a species complex. 

 Hylotoma scapularis Klug, 1814. Mag. Gesell. Naturf. Freunde Berlin 6: 299. S. 

 Hylotoma xanthothorax Leach, 1817. Zool. Misc., v. 3, p. 124. 9. 

 Hylotoma calcanea Say, 1836. Boston Jour. Nat. Hist. 1: 211. 



Biology: Jack, 1891. Psyche 6: 11. 

 spiculata (MacGillivray). Ariz.; Mexico. 



Hylotoma spiculata MacGillivray, 1907. Canad. Ent. 39: 308. 9. 



Subfamily ATOMACERINAE 



Genus ATOMACERA Say 



Atomacera Say, 1836. Boston Jour. Nat. Hist. 1: 212. 



Type-species: Atomacera debilis Say. Desig. by Malaise, 1937. 

 Micrarge Ashmead, 1898. Canad. Ent. 30: 213. 



Type-species: Atoinacera nificollis Norton. Orig. desig. 

 Braunsiola Konow, 1899. Ent. Nachr. 25: 312. 



Type-species: Brauyisiola truculenta Konow. Monotypic. 

 Spegazziniella Jorgensen, 1913. Buenos Aires Mus. Nac. de Hist. Nat., An. 25: 260. 



Type-species: Spegazziniella ovata Jorgensen. Monotypic. 

 Argina Forsius, 1925. Arkiv for Zool. 17A: 2. Preocc. 



Type-species: Argina nubilipennis Forsius. Monotypic. 

 Arginella Forsius, 1926. Notulae Ent. 5: 207. N. name for Argina. 



A genus distributed throughout most of the New World but more highly developed in the 

 tropics. Larvae feed on the foHage of the host plant. 



Revision: Malaise, 1942. Ent. Tidskr. 63: 107-110 (Neotropical species). —Smith, 1969. Amer. 

 Ent. Soc, Trans. 95: 440-446 (Nearctic species). 

 debilis Say. Ont., Mass. to Fla. w. to Minn., Kans., Ark. Host: Desmodium canadense, D. 

 gliitinosum, and probably other species; Lespedeza. 

 Atomacera debilis Say, 1836. Boston Jour. Nat. Hist. 1: 212. i. 

 Atomacera nificollis Norton, 1864. Ent. Soc. Phila., Proc. 3: 6. 9. 

 Atoynacera desynodii Dyar, 1900. N. Y. Ent. Soc, Jour. 8: 26. 9, cJ. Larva. 



Taxonomy: Smith, 1972. Amer. Ent. Soc, Trans. 98: 167 (larva). 



Biology: Dyar, 1900. N. Y. Ent. Soc, Jour. 8: 26. —Weiss and Lott, 1923. Ent. News 34: 167. 

 — Lindquist and Trinnell, 1965. Canad. Ent. 97: 181-184. 

 decepta Rohwer. Conn, to Fla. w. to Mo., Tex. Host: Hibiscus militaris, H. moscheutos hybrid. 

 Atomacera decepta Rohwer, 1911. U. S. Natl. Mus., Proc 41: 382. 9. 



Taxonomy: Smith, 1972. Amer. Ent. Soc, Trans. 98: 167 (larva). 



Biology: Dyar, 1900. N. Y. Ent. Soc, Jour. 8: 26 {nificollis, nee Norton). — Tippins, 1965. 

 Jour. Econ. Ent. 58: 161. 

 ebena Smith. S. Ariz. 



Atomacera ebena Smith, 1969. Amer. Ent. Soc, Trans. 95: 445. 9. 



Subfamily STERICTIPHORINAE 



Genus STERICTIPHORA Billberg 



Sterictiphora Billberg, 1820. Enum. Ins. Mus. Billberg, p. 99. 



