Anterior view of head, adult worker. Antennal scapes exceed posterior margin of head by less than one fifth their length.
Lateral view of gaster, adult worker. The first gastral tergite is covered with dense pubescence, giving it a dull appearance. Used in Antkey to separate Brachymyrmex minutus and Brachymyrmex obscurior from Brachymyrmex heeri and Brachymyrmex patagonicus. Also used to separate Nylanderia bourbonica, Nylanderia fulva and Nylanderia vaga from all other Nylanderia species.
Anterior view of antennal scape, adult worker. Antennal scapes exceed posterior margin of head by at least one fifth their length.
Close-up view of eye / ocellus, adult worker. Eye length approximately equal to or slightly greater than malar distance.
Anterior view of head, adult worker. The eye length (measured as the greatest diameter in full face view) is approximately equal to the malar distance (distance between anterior border of eye and anterolateral margin of clypeus). Used to separate Brachymyrmex heeri and Brachymyrmex patagonicus from Brachymyrmex obscurior.
Lateral view of gaster, adult worker. The first gastral tergite is marked by only sparse pubescence, giving it a shiny appearance. Used in Antkey to separate Brachymyrmex heeri and Brachymyrmex patagonicus from Brachymyrmex minutus and Brachymyrmex obscurior. Also used to separate all other Nylanderia from Nylanderia bourbonica, Nylanderia fulva and Nylanderia vaga.
Adult. One of the most widely-distributed Camponotus species in the American tropics. These ubiquitous nocturnal ants vary in color from almost entirely black to the light reddish-yellow seen here. Photo by ©Alexander L. Wild, alexanderwild.com
Adults. Most Camponotus species have workers of multiple sizes in the colony. Here, a pair of Camponotus atriceps workers demonstrate a typical size range for colonies of their species. Photo by ©Alexander L. Wild, alexanderwild.com
Lateral view of body, surface characters, adult worker. The erect hairs are long, fine and flexuous. They tend to bend anteriorly on the mesosoma and head, and posteriorly on the gaster. Used in Antkey to separate Camponotus atriceps from Camponotus planatus
Close-up view of antennal scape, adult worker. The antennal scape has many hairs that are longer than the width of the scape. Used in Antkey to separate Camponotus atriceps from Camponotus planatus.
Close-up view of body, surface characters, adult worker. Erect hairs fine and flexuous. Photo by Andrea Walker, Antweb.org, modified.
Dorsal view of gaster, adult worker. The gaster is concolorous, uniform or nearly uniform in color, lacking both (1) dark transverse bands running near posterior margins of tergites that contrast with the rest of gaster and body, and (2) yellowish white spots on lateral portions of second tergite. Used in Antkey to separate Camponotus atriceps, Camponotus planatus and Camponotus rectangularis from Camponotus sexguttatus and Camponotus variegatus.
Adult foraging worker showing the distinctive posture with the gaster tucked under the body. Photo by ©Alexander L. Wild, alexanderwild.com
Adult foraging worker showing the distinctive posture with the gaster tucked under the body. Photo by ©Alexander L. Wild, alexanderwild.com
Authors: Sarnat and Suarez
Migrated to idtools.org August 2025
Antkey archived on Scratchpad
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