1 10 Hymenoptera in America North of Mexico 



atroviolaceum (Norton). Que. to Va. w. to Wis., Ill, Kans. Host: Saynbiicus. 



Tenthredo (Allantus) atroviolacea Harris, 1835. In Hitchcock, Rpt. Geol. Mineral. Bot. 



Zool. Mass., p. 583. Nom. nud. 

 Allantus atroviolaceus Norton, 1860. Boston Jour. Nat. Hist. 7: 255. 9,6. 

 Tenthredo atroviolacea var. peratra Dyar, 1897. N. Y. Ent. Soc, Jour. 5: 192. 6, larva. 

 Lagium angulabre Rohwer, 1912. U. S. Natl. Mus., Proc. 43: 215. 6. 

 Lagium planifrons Rohwer, 1912. U. S. Natl. Mus., Proc. 43: 216. 9, c?. 

 tardum (Norton). Mass. to Ga. w. to Wis., Ill, Kans. 



Tenthredo (Allantus) tarda Harris, 1835. In Hitchcock, Rpt. Geol. Mineral. Bot. Zool. 



Mass., p. 583. Nom. nud. 

 Allantus tardus Norton, 1860. Boston Jour. Nat. Hist. 7: 246. 9,6. 

 Lagium erythrogastrum Rohwer, 1912. U. S. Natl. Mus., Proc. 43: 214. 9. 



Genus RHOGOGASTER Konow 



Rhogogaster Konow, 1884. Deut. Ent. Ztschr. 28: 257. 



Type-species: Teyithredo viridis Linnaeus. Desig. by Rohwer, 1911. 

 Rhogogastera Konow, 1885. Wien. Ent. Ztg. 4: 123. Emend. 



Primarily a Palaearctic genus with only four species in North America. Three of the six spe- 

 cies groups separated by Benson (1965) are represented on this continent. 



Revision: Ross, 1943. Pan-Pacific Ent. 19: 129-136. 



Taxonomy: Benson, 1965. Roy. Ent. Soc. London, Proc, Ser. B: Taxonomy 34: 105-112 (world 

 species and species groups). 



Species Group Lateraria 



addenda (Cresson). Mont, and Colo. w. to B. C, Wash., Oreg., Calif. 



Tenthredo addenda Cresson, 1880. Amer. Ent. Soc, Trans. 8: 23. 9. 



Tenthredo vittatipes Cresson, 1880. Amer. Ent. Soc, Trans. 8: 24. 6. 



Rhogogaster tnincatus Rohwer, 1912. U. S. Natl. Mus., Proc. 43: 211. 9. 



Rhogogaster pitohatus Rohwer, 1912. U. S. Natl. Mus., Proc. 43: 211. 9. 

 lateraria (Cresson). Alta., Mont., Nev. w. to B. C, Wash., Oreg., Calif. 



Tenthredo lateraria Cresson, 1880. Amer. Ent. Soc, Trans. 8: 23. 2. 



Tenthredo retosta MacGillivray, 1923. N. Y. Ent. Soc, Jour. 31: 109. 6. 



Species Group Californica 



californica (Norton). Que. to Yukon s. to N. Y., Man., N. Mex., Utah, Calif.; Norway. Host: 

 Populus balsamifera, P. tremuloides. 

 Tenthredo califomicus Norton, 1862. Ent. Soc. Phila., Proc. 1: 198. 9. 

 Tenthredopsis Evansii Harrington, 1889. Canad. Ent. 21: 98. 9. 

 Tenthredo ripula MacGillivray, 1923. N. Y. Ent. Soc, Jour. 31: 109. 6. 

 Rhogogaster polaris Lindqvist, 1964. Notulae Ent. 44: 121. 6. 



Taxonomy: Benson, 1965. Roy. Ent. Soc London, Proc. Ser. B: Taxonomy 34: 108. 



Species Group Viridis 



viridis (Linnaeus). Yukon and Alaska s. to Man., Mont, Calif.; Eurasia, Japan. Host: Salix, 



Populus, Alnus, Ranunculus, Filipendula, Stellaria, Circaea. These hosts recorded in 

 Europe. 



Tenthredo viridis Linnaeus, 1758. Syst. Nat., Ed. 10, v. 1, p. 557. 9. 



Rhogogastera ruga MacGillivray, 1923. Canad. Ent. 55: 160. 9. 



Rhogogastera respectus MacGillivray, 1923. N. Y. Ent. Soc, Jour. 31: 165. 9. 



Rhogogaster similis Lindqvist, 1958. Notulae Ent. 38: 68. 



Taxonomy: Benson, 1963. Notulae Ent. 43: 137-138 (wear and damage of saws). 



Morphology: Zacwilichowska, 1953. Polski Pismo Ent. 23: 114-128 (innervation and sense 

 organs in wings). 



