1358 Hymenoptera in America North of Mexico 



Type-species: Theryella myops Santschi. Monotypic. 



This is a holarctic genus which also extends into the Neotropical Region. Nests are usually in 

 wooded areas where the small colonies are found in logs, stumps, branches, in soil beneath rocks, 

 moss, debris, or humus. Workers are apparently predatory, feeding mostly on other arthropods. 

 Snelling (1973) set up five species groups for the 12 western species of this genus; other North 

 American species may belong to one of these groups or form new groups. 



Revision: Emery, 1895. Zool. Jahrb., Abt. f. System. 8:297-301. — Forel, 1901. Soc. Ent. de 

 Belg., Ann. 45:347-348. —Wheeler, 1903. Psyche 10:164-168. —Smith, 1957. Amer. Midland 

 Nat. 57:133-174 (N. Amer.). —Snelling, 1973. Los Angeles Co. Mas., Contrib. ScL 245:1-38 

 (western N. Amer.). 



Taxonomy: Wheeler and Wheeler, 1953. Ent. Soc. Wash., Proc. 55:50-52. (larvae). 



Biology: Francoeur, 1966. Ent. Soc. Quebec, Ann. 11:115-119 (4 species in Que.). 

 brevicome (Mayr). N. S., Que. s. to Va., w. to Ont., Minn., Nebr., Colo. (?). Ecology: Prefers to 

 nest in wooded areas, though sometimes found in meadows, in soil under stones, in 

 debris, rotting wood, etc. 

 Aphaenogaster brevicomis Mayr, 1886. Zool.-Bot. Gesell. Wien, Verb. 36:443, 447-448. 5 , 



9. 

 Stenamma neoarcticum (!) Mayr, 1886. Zool.-Bot. Gesell. Wien, Verb. 36:454. 5 (temnle, 

 male misdet.). 



Biology: Wheeler, 1905. Amer. Mus. Nat. Hist., Bui. 21:373, 382. —Wheeler, 1917. Conn. State 

 Geol. and Nat. Hist. Survey Bui. 22:585. — Kannowski, 1958. Ent. News 69:231-233 

 (swarming of males). —Gregg, 1963. Ants of Colo., pp. 346-348. —Francoeur, 1966. Ent. 

 Soc. Quebec, Ann. 11:115-119. 

 califomicum Snelling. Calif. Ecology: Found in fern humus and oak leaf litter. 



Stenamma califomicum, Snelling, 1973. Los Angeles Co. Mus., Contrib. Sci. 245:16-18. 9, 

 9. 

 carolinense Smith. N. C. (Hoffman, Richmond Co.). Ecology: Collected in sparsely vegetated 

 sandy soil. 

 Stenam.mxi carolinense Smith, 1951. Ent. Soc. Wash., Proc. 53:156-158. 5. 

 chiricahua Snelling. S. Ariz. Ecology: Found in moimtains in shaded creek bed. 



Stenamma chiricahiui Snelling, 1973. Los Angeles Co. Mus., Contrib. Sci. 245:7-10. 5,9, 

 S. 

 diecki Emery. Que., Maine s. to N. C, w. to B. C, Wash., Oreg., Calif.; Mexico. Ecology: A 

 widespread species adapted to various habitats but apparently absent in the southern 

 states from S. C. to Fla., w. to Tex. Nests are usually in wooded areas in rotting wood 

 or under objects. 

 Stenamma westwoodi diecki Emery, 1895. ZooL Jahrb., Abt. f. System. 8:300. 9,9. 

 Stenamma westwoodi diecki var. im,pressum, Emery, 1895. ZooL Jahrb., Abt. f. System. 

 8:301. 9. 



Taxonomy: Wheeler and Wheeler, 1953. Ent. Soc. Wash., Proc. 55:50 Garva). —Snelling, 1973. 

 Los Angeles Co. Mus., Contrib. Sci. 245:18-21. 



Biology: Wheeler and Wheeler, 1944. N. Dak Hist. Quart. 11:244. —Dennis, 1938. Ent. Soc. 

 Amer., Ann. 31:284, 304. —Cole, 1950. Tenn. Acad. Sci., Jour. 25:297. —Wheeler and 

 Wheeler, 1963. Ants of N. Dak, pp. 121-122. —Gregg, 1963. Ants of Colo., pp. 350-351, 353. 

 —Francoeur, 1966. Ent. Soc. Quebec, Ann. 11:115-119. — Lettendre and Pilon, 1972. Nat. 

 Canad. 99:73-82 (in Que.). 

 dyscheres Snelling. CaUf. Ecology: Found at low to moderate elevations in the Sierra Nevada 

 foothills. Specimens have been found in pine duff. 

 Stenamma dyscheres Snelling, 1973. Los Angeles Co. Mus., Contrib. Sci. 245:21-25. 5,9, 

 S. 

 exasperatum Snelling. Calif. (Calaveras Co. and Yosemite Nat. Pk). Ecology: Found under 

 stones in Sequoia and pine forests. 

 Stenamma exasperatum Snelling, 1973. Los Angeles Co. Mus., Contrib. Sci. 245:28-30. 9 . 



