Key to Temnothorax schaumii species group workers

This worker key is based on: Mackay, W. P. 2000. A review of the New World ants of the subgenus Myrafant, (genus Leptothorax) (Hymenoptera: Formicidae). Sociobiology. 36:265-444.

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 * Temnothorax
 * New World Temnothorax species groups
 * Temnothorax hispidus species group synopsis
 * Key to New World Temnothorax species groups

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 * Propodeal armature consisting of tiny spines or angles . . . . . Temnothorax schaumii


 * Propodeal armature well developed with long, acute spines . . . . . 2

2
return to couplet #1
 * Worker unknown; eye of female small, round diameter about equal in length to length from base of mandible to anterior edge of eye; propodeal spines long (length 0.15mm), diameter about equal along entire length; Washington, D. C. . . . . . Temnothorax minutissimus


 * Eye of female large, oblong, diameter greater than length between base of mandible and anterior edge of eye; propodeal spines thick at bases, narrowed towards tip: distributed throughout eastern United States . . . . . 3

3
return to couplet #2
 * Head with rugae or coarse striae, intrarugal spaces punctate . . . . . Temnothorax bradleyi


 * Head with fine striae, surface between striae finely sculptured, and forming reticulations with striae . . . . . 4

4
(return to couplet #3
 * Propodeal spines elongate, length greater that twice distance between bases . . . . . Temnothorax curvispinosus


 * Propodeal spines shorter, length about equal to distance between bases . . . . . Temnothorax ambiguus