Key to Pogonomyrmex of Hispaniola

These keys are based on: Johnson, R. A. and S. P. Cover. 2015. A taxonomic revision of the seed-harvester ant genus Pogonomyrmex (Hymenoptera: Formicidae) on Hispaniola. 2015. 3972:19. doi:10.11646/zootaxa.3972.2.5

You may also be interested in
 * Pogonomyrmex
 * Hispaniola species list
 * The Ants of Hispaniola

1

 * Dorsum and sides of mesosoma and posterior surface of petiolar node with coarse, regular to weakly irregular, subparallel, longitudinal rugae . . . . . Pogonomyrmex saucius


 * Dorsum and sides of mesosoma rugoreticulate to vermiculate; posterior surface of petiolar node mostly smooth, granulate-punctate to rugoreticulate, but lacking subparallel longitudinal rugae . . . . . 2

2
return to couplet #1
 * Small (HW = 0.90–1.17 mm); posterior surface of petiolar node viewed from behind and above broadly fan-shaped and about as wide as long; in dorsal view, petiolar node about as wide as postpetiolar node (PW/PPW = 0.87–1.03); anterior surface of petiolar node mostly smooth and shining, forming a noticeably obtuse angle with peduncle of petiole; dorsum of postpetiole and first gastral tergum smooth and shining to partly or completely punctate, weakly shining . . . . . Pogonomyrmex schmitti


 * Larger (HW = 1.11–1.35); posterior surface of petiolar node viewed from behind and above elongate, clearly longer than wide; in dorsal view, petiolar node notably narrower than postpetiolar node (PW/PPW = 0.78–0.90); anterior surface of petiolar node partly to completely sculptured, dull to weakly shining, forming a right to weakly obtuse angle with peduncle of petiole; dorsum of postpetiolar and first gastral tergum strongly punctate, dull . . . . . Pogonomyrmex aterrimus

Q1

 * Dorsum of mesocutum, mesoscutellum, and posterior surface of petiolar node with coarse, regular to weakly irregular, subparallel, longitudinal rugae . . . . . Pogonomyrmex saucius


 * Dorsum of mesoscutum and mesoscutellum with irregular longitudinal rugae to rugoreticulate/vermiculate; posterior surface of petiolar node mostly smooth, granulate-punctate to rugoreticulate, but lacking subparallel longitudinal rugae . . . . . Q2

Q2
return to couplet #Q1
 * Larger (HW = 1.32 mm), notably larger than conspecific workers; in dorsal view, petiolar node elongate (width/length < 0.85), relatively narrow compared to postpetiole (PW/PPW < 0.75); anterior surface of petiolar node moderately sculptured; dorsum of postpetiole and most of first gastral tergum strongly granulate-punctate, dull . . . . . Pogonomyrmex aterrimus


 * Smaller (HW = 0.87–1.19 mm), about the same size as conspecific workers; in dorsal view, petiolar node fan-shaped, relatively broad (width/length > 0.90), relatively broad compared to postpetiole (PW/PPW > 0.80); anterior surface of petiolar node largely smooth and shining; dorsum of postpetiole and first gastral tergum smooth and shining to completely punctate, weakly shining . . . . . Pogonomyrmex schmitti