Key to Monomorium males of the New World

This key is based on: DuBois, M. B. 1986. A revision of the native New World species of the ant genus Monomorium (minimum group) (Hymenoptera: Formicidae). University of Kansas Science Bulletin. 53:65-119.

The following species are not included in this key: Monomorium compressum, Monomorium emarginatum, Monomorium inquilinum, Monomorium marjoriae, Monomorium pergandei, and Monomorium wheelerorum.

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• Monomorium
• Key to Monomorium workers of the New World
• Key to Monomorium queens of the New World

1

• Eighth sternite emargination lacking projecting setae . . . . . 2

• Eighth sternite emargination with projecting setae; common along Atlantic coast from New Jersey to Florida . . . . . Monomorium viridum

2

return to couplet #1

• Aedeagus with toothed margin straight . . . . . 3

• Aedeagus with toothed margin curved . . . . . 4

3

return to couplet #2

• Cuspis of volsella present; known only from type locality (Livingston Co., Michigan) . . . . . Monomorium talbotae

• Cuspis of volsella absent; occurs throughout C aribbean region . . . . . Monomorium ebeninum

4

return to couplet #2

• Cuspis of volsella with 3 setae . . . . . 5

• Cuspis of volsella with 5 setae; occurs throughout central Mexico, Arizona, New Mexico, and parts of Texas . . . . . Monomorium cyaneum

5

return to couplet #4

• Aedeagus quadrate; occurs throughout central U.S. . . . . . Monomorium minimum

• Aedeagus longer than broad . . . . . 6

6

return to couplet #5

• Eighth sternite emargination 1/2 as deep as wide; occurs along California coast . . . . . Monomorium ergatogyna

• Eighth sternite emargination as deep as wide; occurs in northern Florida . . . . . . . . . Monomorium trageri