1412 Hymenoptera in America North of Mexico 



Atta (Trachymyrmex) septentnonalis var. vertebrata Wheeler, 1911. N. Y. Ent. Soc, Jour. 



19:246, 250. 5 , 9 . 

 Atta (Trachymyrmex) septentrionalis obscurior var. sem.inole Wheeler, 1911. N. Y. Ent. 



Soc, Jour. 19:247, 250. $, 9, cJ. 

 Atta (Trachymyrmex) septentrionalis obscurior var. crystallina Wheeler, 1911. N. Y. Ent. 



Soc, Jour. 19:247,250. 5, 9. 

 Atta (Trachymyrmex) septentrionalis obscurior var. irrorata Wheeler, 1911. N. Y. Ent. 



Soc, Jour. 19:247,250. 5. 



Taxonomy: Forel, 1884. Soc. Vaud. des Sci. Nat., Bui. 20:91. —Smith, 1924. Ent. News 35:52. 

 —Cole, 1940. Amer. Midland Nat. 24:59. —Wheeler, 1948. Amer. Midland Nat. 40:673 

 (larva). —Weber, 1958. Ent. News 69:52-53. 



Biology: Wheeler, 1905. Amer. Mus. Nat. Hist., Bui. 21:374, 386-387. —Wheeler, 1907. Amer. 

 Mus. Nat. Hist., Bui. 23:680-681, 746-753. —Wheeler, 1911. Psyche 18:95-97. —Wheeler, 

 1911. N. Y. Ent. Soc, Jour. 19:250-255. —Dennis, 1938. Ent. Soc. Amer., Ann. 31:273, 292, 

 305. —Cole, 1939. Lloydia 2:153-160. —Cole, 1951 (1950). Ent. Soc. Amer., Ann. 43:499-500. 

 —Weber, 1956. Ecology 37:150-161. —Weber, 1966. Ent. News 77:241. — Moser, 1964. 

 Science 143:1048-1049 (inquiline roach responds to trail-making substance). — Weber, 1972. 

 Amer. Phil. Soc, Mem. 92, pp. 3, 13-15, 25-28, 32-33, 35-36, 40-44, 46, 51, 54-55, 62, 70, 99, 

 103-104, 106-107, 112, 117. 

 smithi neomexicanus Cole. N. Mex., Ariz. Ecology: Nests found in sand. T. smithi sm,ithi 

 Buren occurs in Mexico. 

 Trachymyrmex smithi neomexicamis Cole, 1952. Tenn. Acad. Sci., Jour. 27:159-162. 5. 



Taxonomy: Cole, 1953. Tenn. Acad. Sci., Jour. 28:300-301 (female, male). 

 turrifex caroli (Wheeler). Tex. (Huntsville). 



Atta (Trachymyrmex) turrifex caroli Wheeler, 1911. N. Y. Ent. Soc, Jour. 19:248. 5. 

 turrifex turrifex (Wheeler). La., Tex.; Mexico. Ecology: Nests in soil. 



Atta (Trachymyrmex) turrifex Wheeler, 1903. Psyche 10:100. 5,9. 



Taxonomy: Wheeler, 1907. Amer. Mus. Nat., Hist., Bui. 23:709-710. —Wheeler, 1911. N. Y. 

 Ent. Soc, Jour. 19:249. 



Biology: Wheeler, 1907. Amer. Mus. Nat. Hist., Bui. 23:753-759. —Wheeler, 1911. Psyche 

 18:95-97. 



Genus ACROMYRMEX Mayr 



Atta subg. Acromyrmex Mayr, 1865. Reise d. Novara, Zool. v. 1, Hym., p. 83. 



Type-species: Formica hystrix Latreille. Monotypic 

 Atta subg. Moellerius Forel, 1893. Soc. Ent. de Belg., Ann. 37:589. 



Type-species: Atta (Acromyrmex) landolti Forel. Desig. by Wheeler, 1911. 

 Pseudoatta Gallardo, 1916. Buenos Aires Mus. Nac de Hist. Nat., An. 28:320. Syn. 

 uncertain. 



Type-species: Pseudoatta argentina Gallardo. Monotypic. 



A Neotropical genus with a slight extension into southwestern United States. These are 

 mostly grassland and semidesert fungus-growing ants which usually collect grass. They are com- 

 parable to Atta in biology and economic importance but colonies are apparently not so large and 

 the leaf -cutting habits not so extensive. The species listed below have previously been placed in 

 the subgenus Moellerius. 



Revision: Wheeler, 1907. Amer. Mus. Nat. Hist., Bui. 23:669-700, 703-706, 743-746. — Santschi, 

 1925. Rev. Suisse de Zool. 31:386-398. 



Taxonomy: Weber, 1945. Rev. de Ent. 16:61-62. —Wheeler, 1948. Amer. Midland Nat. 

 40:674-676 (larvae). — Brown, 1973. In Meggers, et al.. Tropical Forest Ecosystems in Afr. 

 and S. Amer., pp. 178-185 (generic syn.). 



Biology: Weber, 1967. Ent. Soc. Amer., Ann. 78:107-109 (growth of young colonies in first 

 year). 



