FIGURE 2 in A taxonomic revision of South American species of the seed-harvester ant genus Pogonomyrmex (Hymenoptera: Formicidae). Part II

FIGURE 2. Closeup photographs of the mesosoma in dorsal view and in profile that distinguish between brachypterous and fully alate queens of Pogonomyrmex: (A–B) dealate brachypterous queen of P. tinogasta (CASENT0235287), (C–D) brachypterous queen of P. atacama (CASENT0922568), (E–F) dealate queen of fully winged P. mapuche (CASENT0280985), and (G–H) fully winged queen of P. spinolae (CASENT0869792). Red arrows (A, B, E, F) show remaining wing scars after the wings have been lost in a brachypterous (A–B) and fully alate queens (E–F). Blue, green, and yellow arrows show morphological differences between brachypterous and fully alate queens. Blue arrows show the much enlarged pronotum in brachypterous queens (A & C) compared to the pronotum of fully alate queens (E & G). Green arrows show differences in the profile of the pronotum, with brachypterous queens having either a sloping (B) or vertical pronotum (D), whereas fully alate queens always have a vertical pronotum (F & H). Yellow arrows show brachypterous queens with the mesoscutum meeting the pronotum on a horizontal plane (A) or the mesoscutum slopes at 45o from the juncture of the pronotum to the dorsum of the mesoscutum (D), whereas the mesoscutum continues vertically from the pronotum in fully alate queens (F & H). Photographs by Michele Esposito and Robert Johnson from www.AntWeb.org.