Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
|
|
|
Identification
Minor worker: head length 0.51mm, head width 0.46mm, scape length 0.48mm, Webers length 0.63mm (n=1). Head flattened to somewhat cordate behind; promesonotum evenly arched, mesonotal suture absent; propodeal spines very short, upturned; scapes feebly rugose; face and most of mesosoma minutely and uniformly foveolate, overlain with a silky luster; side of pronotum and medial katepisternum smooth and shining; gaster smooth and shining; dorsal pilosity moderately abundant, moderately long, flexuous; color red brown to light brown, head and mesosoma sometimes darker than gaster.
Major worker: head length 1.31mm, head width 1.17mm, scape length 0.60mm (n=1). Face finely striatofoveolate beneath sweep of scapes and in medial area between frontal carinae, rest of face posterior to scapes smooth and shining; medial clypeus smooth, shining, concave except for weak median process; hypostomal margin straight with no teeth except recessed teeth flanking mandible bases; dorsal pilosity abundant; head with abundant, short, subdecument setae projecting from sides of head in face view.
Range
Costa Rica: mid-elevation Atlantic slope.
Natural History
This species occurs in mature wet forest, nests in the soil or under stones, and forages in or on forest floor leaf litter.
Selected Records
Winkler samples from Braulio Carrillo National Park (800m), Penas Blancas Valley.
Penas Blancas Valley: mature wet forest; small nest in soil at edge of large Megalomyrmex modestus colony.
Penas Blancas Valley: mature wet forest; nest under stone.
Page authors:
John T. Longino, The Evergreen State College, Olympia WA 98505 USA. longinoj@evergreen.edu
Stefan Cover, Museum of Comparative Zoology, Harvard University, Cambridge MA 02138 USA. scover@oeb.harvard.edu
Go back to top