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|Raised to species: Brown, 1960a: 177.|
Prionopelta antillana: worker: anterior clypeal margin subangular, not evenly rounded; face medial to eye with distinct puncta and smooth shiny interspaces; propodeum possibly with shallower angle between dorsal and posterior faces (angle on P. amabilis seems sharper, more defined somehow); color often lighter orange yellow; dorsal pilosity in profile scruffier. Queen: larger, margins of head with more prominent projecting pilosity, with setae of varying lengths.
Prionopelta amabilis: worker: anterior clypeal margin evenly rounded; puncta on face very small and closely spaced, so that face does not look punctate and also looks somewhat duller than P. antillana; propodeal angle sharper and more defined; color often a bit duskier, amber; dorsal pilosity in profile a more even, shorter pile. Queen: smaller; margins of head with very even, very short pubescence.
I have very little material from beyond Central America. One collection from Rancho Grande, Venezuela, matches most characters of amabilis, but the face is shinier than Central American specimens. The puncta are still tiny, hardly visible. Specimens from the Santa Marta area of Colombia and the island of Guadeloupe are nearly identical and a close match to the types of P. antillana from St. Vincent. They match the characters of antillana workers described above, but the face puncta are more closely spaced relative to Central American specimens.
Alto Paraná, Amambay, Canindeyú (ALWC, BMNH, IFML, INBP, LACM, MHNG).
Found most commonly in these habitats: 8 times found in Rainforest, 8 times found in tropical rainforest, with big trees, probably primary, 8 times found in tropical rainforest, with some big trees, probably a mix of primary and secondary forest, 2 times found in wet forest, 3 times found in Bamboo forest, 1 times found in moist forest, 1 times found in Puesto1,293G. 10m., 1 times found in deciduous forest, 2 times found in wet trop. forest, 1 times found in rainforest stream edge, ...
Found most commonly in these microhabitats: 31 times ex sifted leaf litter, 3 times under stone, 3 times Sifted litter, 1 times Primary wet forest, 2000-2100hrs (dark). Workers under moss/root mat at base of, 1 times in treefern base, 1 times in soil, 1 times All ants from Louisa Stark (OTS 89-1 student) study; litter and ground-nesting a, 1 times 25yr old second growth just above Casa Plastico. Ex sifted leaf litter on ground, 1 times Wet forest. Ex sifted leaf litter., 1 times under rotten log, 1 times soil-litter layer, ...
Collected most commonly using these methods: 14 times Winkler, 12 times miniWinkler, 8 times maxiWinkler, 4 times Berlese, 6 times hand collection, 3 times search, 1 times Berlesate, 1 times Ex rotten log.
Elevations: collected from 19 - 1169 meters, 431 meters average