Key to Rogeria of Guyana

This worker key is based on: [[Media:Sosa Calvo & LaPolla 2006.pdf|LaPolla, J. S. and J. Sosa-Calvo. 2006. Review of the ant genus Rogeria (Hymenoptera: Formicidae) in Guyana. Zootaxa. 1330:59-68. PDF]]

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 * Rogeria
 * Guyana

1

 * Hairs on mesosomal dorsum entirely appressed, or consisting of a mixture of mostly appressed and a few decumbent hairs . . . . . 2


 * Mesosomal dorsum bearing some erect hairs; appressed to suberect hairs may also be present . . . . . 4

2
return to couplet #1
 * Body of clypeus not greatly projecting over clypeal apron; color brown to shiny dark brown . . . . . 3


 * In lateral view, body of clypeus greatly projecting over clypeal apron; color dull brown . . . . . Rogeria prominula

3
return to couplet #2
 * Smaller species (TL: 1.9 mm–2.9 mm); light brown to brown and dull . . . . . Rogeria foreli


 * Larger species (TL: 3.75 mm–3.88 mm); dark brown and shiny . . . . . Rogeria tsumani

4
return to couplet #1
 * In lateral view, petiolar node low and curving gradually into anterior peduncle . . . . . 5


 * In lateral view, petiolar node tall and more sharply differentiated from anterior peduncle, node rounded, subquadrate, or squamiform . . . . . 6

5
return to couplet #4
 * Dorsum of head rugoreticulate; area behind eyes rugoreticulate; reddish-brown . . . . . Rogeria blanda


 * Dorsum of head with distinct longitudinal carinulae; area behind eyes smooth and shiny; dark brown . . . . . Rogeria procera

6
return to couplet #4
 * Head surface uniformly rugoreticulate and/or areolate, no intervening shiny areas; hairs appressed to erect on head . . . . . 7


 * Head surface relatively smooth, only vaguely rugoreticulate or areolate, with intervening shiny areas; hairs appressed on head . . . . . Rogeria curvipubens

7
return to couplet #6
 * Posterior portion of head rugoreticulate . . . . . 8


 * Posterior portion of head distinctly areolate . . . . . Rogeria innotabilis

8
return to couplet #7
 * Dorsal surfaces of head, mesosoma, and metasoma with sparse appressed and/or erect hairs . . . . . 9


 * Dorsal surfaces of head, mesosoma, and metasoma with a dense covering of erect hairs . . . . . Rogeria lirata

9
return to couplet #8
 * Lateral surface of mesosoma with distinct rugae; reddish-yellow . . . . . 10


 * Lateral surface of mesosoma without rugae, surface areolate; dull yellow . . . . . Rogeria micromma

10
return to couplet #9
 * Head largely with decumbent to appressed hairs; propodeal spines at roughly right angles relative to longitudinal axis of the mesosoma . . . . . Rogeria alzatei


 * Head largely with short erect hairs; propodeal spines nearly parallel to longitudinal axis of the mesosoma . . . . . Rogeria scobinata