| Genus List | Species List | Genus Overview |
10a. Head capsule brown, mesosoma lighter dusky yellow brown to yellow, gaster, legs, and antennal scapes yellow; scapes surpassing margin of vertex; common pest ant in human dwellings and highly disturbed habitats: melanocephalum
10b. Without the above color combination, uniformly brown to yellow, or with variably lighter appendages, mesosoma, and head; scape length variable: 20
20a. Pronotum with pair of erect setae: JTL-001
20b. Pronotum lacking erect setae: 30
30a. Scapes just reaching margin of vertex or shorter; color usually yellow to light brown: litorale
30b. Scapes usually surpass margin of vertex; color usually darker brown (but the broad definition of ramulorum includes some all-yellow specimens): 40
40a. Scapes very long, about third of length extending beyond margin of vertex; in full-face view, margin of vertex evenly rounded, not medially emarginate; nests in small carton nests beneath leaves: ramulorum inrectum
40b. Scapes of variable length, extending beyond margin of vertex but never a third their length; in full face view, margin of vertex medially emarginate; nests in live or dead plant cavities: ramulorum
Page author:
John T. Longino, The Evergreen State College, Olympia WA 98505 USA.longinoj@evergreen.edu
Go back to top