Superfamily SPHECOIDEA 1597 



The North American nigra (Pack.) nests in decaying timber and preys upon adult Agallia leaf- 

 hoppers. Several species in the Old World have similar nesting habits and one species nests in 

 clay banks. The Old World species prey upon both Cicadellidae and Delphacidae. 



canadensis (Malloch). Ont., N. Y., Mich., N. Dak., Colo., Alaska. 



Psen (Mimumesa) canadensis Malloch, 1933. U. S. Natl. Mus., Proc. 82 (26): 22. 9 , 6 . 



clypeata (Fox). Colo., Utah, Nev., Idaho, Cahf., Wash., Alaska, N. W. T. 



Psen clypeatus Fox, 1898. Amer. Ent. Soc, Trans. 25: 15. 9, S. 

 coloradoensis (Cameron). Colo. (Berkeley Co.). 



Psen (Mimesa) coloradoensis Cameron, 1908. Amer. Ent. Soc, Trans. 34: 232. 9 . 

 cylindrica (Fox). Ariz. 



Psen cylindricus Fox, 1898. Amer. Ent. Soc, Trans. 25: 5. 9, S. 



fuscipes (Packard). Mass. 



Psenfuscipes Packard, 1867. Ent. Soc. Phila., Proc. 6: 402. 9. 



interstitialis (Cameron). N. Mex. 



Psen (Mimesa) interstitialis Cameron, 1908. Amer. Ent. Soc, Trans. 34: 233. d . 



johnsoni Viereck. N. Y. to Va., W. Va. 



Mimesa johnsoni Viereck, 1901. Amer. Ent. Soc, Trans. 27: 340. 9,6. 



leucopus (Say). N. H., Md., D. C, Va., Ind., 111., Alta. 



Psen leucopus Say, 1837. Boston Jour. Nat. Hist. 1: 370. 9,6. 



Psen elongatus Packard, 1867. Ent. Soc, Phila., Proc. 6: 400. "9" = 6. 

 longicornis (Fox). R. I., N. Y. to Fla., La., Iowa; Cuba, Cent. Amer. 



Psen longicornis Fox, 1898. Amer. Ent. Soc, Trans. 25: 8. 6. 



Mimesa striatus Viereck, 1901. Amer. Ent. Soc, Trans. 27: 339. 9 . 



Psen (Mimesa) floridana Rohwer, 1910. Ent. Soc. Wash., Proc. 12: 102. 9. 



mandibularis Smith. Nebr. 



Mimesa mandibularis Smith, 1908. Nebr. Univ., Studies 8: 392. 9 . 



mellipes (Say). N. Y., Md., D. C, Ohio, Ind., 111., Iowa, Nebr. 



Psen mellipes Say, 1837. Boston Jour. Nat. Hist. 1: 369. 9. 



Psen chalcifrons Packard, 1867. Ent. Soc. Phila., Proc. 6: 401. 9. 

 mixta (Fox). Transcont. in Transit. Zone. Predator: Philanthus pulcher D. T. 



Psen mixtus Fox, 1898. Amer. Ent. Soc, Trans. 25: 7. 9, <J. 



Mimesa alticola Viereck, 1903. Amer. Ent. Soc, Trans. 29: 65. 9 . 



Psen (Mimesa) similis Rohwer, 1910. Ent. Soc. Wash., Proc. 12: 101. 6. 

 nigra (Packard). Transcont. in Transit. Zone. Ecology: Nests in decaying wood. Prey: Agallia 

 sp. adults. 



Psen niger Packard, 1867. Ent. Soc. Phila., Proc. 6: 399. 9 (6 misdet.). 



Taxonomy: Evans, 1959. Amer. Ent. Soc, Trans. 85: 143-144, figs. 21-22 (larva). 

 Biology: Gurney, 1951. Ent. Soc. Wash., Proc. 53: 280 (nest, prey). 

 propinqua Kincaid. Alaska. 



Mimesa vropinqua Kincaid, 1900. Wash. Acad. Sci., Proc. 2: 508. 6. 

 psychrus (Pate). Canada (Hudson Bay). 



Mimesa borealis Smith, 1856. Cat. Hym. Brit. Mus., v. 4, p. 431. 6. Preocc. 

 Psen (Mimesa) psychnis Pate, 1944. Canad. Ent. 76: 133. N. name. 



regularis (Fox). N. J., Pa. 



Psen regularis Fox, 1898. Amer. Ent. Soc, Trans. 25: 6. 9. 



Taxonomy: Viereck, 1901. Amer. Ent. Soc, Trans. 27: 339. 9. 



Genus PSENEO Malloch 



Psen subg. Pseneo Malloch, 1933. U. S. Natl. Mus., Proc. 82 (26): 7. 

 Type-species: Psen kohlii Fox. Orig. desig. 



Meager records indicate that these wasps nest either in the soil or in decaying wood, and prey 

 upon leafhoppers, both nymphs and adults. 



