Superfamily FORMICOIDEA 1411 



Taxonomy: Creighton, 1950. Harvard Univ., Mus. Comp. Zool., Bui. 104:317-318. — Kempf, 

 1964. Studia Ent. 7:1. 



hartmanni (Wheeler). La., Tex. Ecology: Forms small colonies in soil; food consists of a fungus 

 grown upon a substratum composed of flower anthers. 

 Atta (Mycetosoritis) hartmanni Wheeler, 1907. Amer. Mus. Nat. Hist., Bui. 23:714. 5, ?, 



6. 



Taxonomy: Wheeler and Wheeler, 1974. Ent. Soc. Wash., Proc. 76:77-79 (larva). 



Biology: Wheeler, 1907. Amer. Mus. Nat. Hist., Bui. 23:761-765. —Wheeler, 1910. Ants, pp. 

 334-335. 



Genus TRACHYMYRMEX Forel 



Atta subg. Trachymyrmex Forel, 1893. Soc. Ent. de Belg., Ann. 37:600. 



Tyi)e-species: Atta septentrionalis McCook. Desig. by Wheeler, 1911. 



A Neartcic and Neotropical genus found from New York south to Argentina, and the largest 

 genus of attine ants. In the United States, most forms are recorded from the more humid areas, 

 though a few occur in arid sections. Nests are in the soU. The fungi on which the ants feed is 

 grown on a substratum of plant particles and insect excrement. 



Revision: Wheeler, 1907. Amer. Mus. Nat. Hist, Bui. 23:706-714, 746-760. —Wheeler, 1911. N. 

 Y. Ent. Soc., Jour. 19:245-255. 



Taxonomy: Weber, 1945. Rev. de Ent. 16:44. —Wheeler, 1948. Amer. Midland Nat. 40:673-674 

 (larvae). 



Biology: Weber, 1955. Science 121:109. —Weber, 1960. Ent. News 71:1-6 (comparison of 

 worker and female behavior). 



arizonensis (Wheeler). Ariz. (Huachuca Mtns.). Ecology: Found in arid, stony canyons, 5000 to 

 6000 ft. 

 Atta (Trachymyrmex) arizonensis Wheeler, 1907. Amer. Mus. Nat. Hist., BuL 23:710. 9,6. 



Taxonomy: Wheeler, 1911. N. Y. Ent. Soc., Jour. 19:250 (worker). 



Biology: Wheeler, 1911. Psyche 18:93-98. — Essig, 1926. Ins. of West. No. Amer., p. 862. 

 —Weber, 1972. Amer. PhiL Soc., Mem. 92, p. 93. 

 desertorum (Wheeler). Ariz. (nr. Tucson). Ecology: Nests were found in hard, pebbly, desert 

 soil. 

 Atta (Trachymyrmex) desertorum Wheeler, 1911. Psyche 18:98-100. 5. 



Taxonomy: Wheeler, 1911. N. Y. Ent. Soc., Jour. 19:249. 



Biology: Wheeler, 1911. Psyche 18:100-101. —Essig, 1926. Ins. of West. No. Amer., p. 862. 

 jamaicensis (Andre). Fla. (Dania); W. Indies. Possibly introduced. 



Atta (Acromyrmex) jamaicensis Andre, 1893. Rev. Ent. Caen 12:149. 2. 



Trachymyrmex sharpi Forel, 1893. Ent. Soc. London, Trans., p. 372. 5 . 



Atta (Trachymyrmex) maritima Wheeler, 1905. Amer. Mus. Nat. Hist., Bui. 21:107. 5. 



Taxonomy: Smith, 1936. Puerto Rico Univ., Jour. Agr. 20:860. —Weber, 1967. Ent. News 

 78:107-109. 



Biology: Weber, 1972. Amer. Phil. See., Mem. 92, pp. 102, 104 (fungi). 

 nogalensis Byars. Ariz. (Nogales). 



Trachymyrmex nogalensis Byars, 1951. Ent. Soc. Wash., Proc. 53:109-111. 5, 9. 

 septentrionalis (McCook). N. Y. (L. I., Staten Is.) s. to Fla., w. to 111., La, Tex. Ecology: Nests 

 are in soil, usually with a small semicircular crater. Of some economic importance 

 because of the habit of cutting leaves from domesticated plants. The New York records 

 are the northernmost for an attine ant. 

 Oecodoma virginiana Buckley, 1867. Ent. Soc. Phila., Proc. 6:346. 5 . Placement of this 



species is questionable. 

 Atta septentrionalis McCook, 1880. Acad. Nat. Sci. Phila., Proc. 32:359. 3 . 

 Atta (Trachymyrmex) septentrionalis var. obscurior Wheeler, 1907. Amer. Mus. Nat. Hist., 

 Bui. 23:706. 9, 9, cJ. 



