Formicidae, Hymenoptera, Insecta, Arthropoda, Animalia
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Identification
Minor worker: head length 0.73mm, head width 0.64mm, scape length 0.82mm, Webers length 0.90mm (n=1). In full face view, posterior margin of vertex broadly rounded to slightly flattened or emarginate; no vertex collar; promesonotal and metanotal grooves well impressed; propodeal spines short; face smooth and shiny; pronotum largely smooth and shiny, with band of puncta anteriorly and ventrolaterally; mesonotum smooth and shiny dorsally, foveolate on sides, puncta fading on upper half of anepisternum; propodeum foveolate dorsally and on sides; gaster smooth and shiny; dorsal pilosity moderately abundant, long, flexuous; color dark brown.
Major worker: head length 1.27mm, head width 1.18mm, scape length 0.80mm (n=1). Face shiny throughout; anterior half of face, lateral to frontal carinae, reticulate rugose, remainder of face smooth; hypostomal margin with pair of widely-spaced teeth, teeth long and sharp, located near small recessed teeth flanking mandible; dorsal setae abundant, flexuous; abundant suberect setae projecting from sides of head in face view.
Range
Costa Rica: Santa Rosa, La Pacifica.
Natural History
This species is known from a tuna bait near the Santa Rosa administration area, and a Winkler sample from La Pacifica.
Comments
Species that have similar morphometric profiles include dentata, madrensis, cordiceps, nitidula, pampana, and quiaccana. All of these have the side of the pronotum smooth and shining (according to illustrations of Wilson). JTL-005 has the side of the pronotum partially foveate. Pheidole dentata has an enlarged postpetiole (minor PPI 166 vs. 129). Pheidole cordiceps is described as being medium yellow.
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
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