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Mexico south to Costa Rica, many Caribbean islands. Uncertain whether native in Costa Rica.
In Costa Rica this is a moderately common species in disturbed areas in the seasonally dry northwest portion of the country. I have collected it in Santa Rosa National Park, where I observed workers recruiting to a dead grasshopper on an asphalt road. I also have records from Curu on the Nicoya Peninsula and La Pita on the road from the PanAmerican highway to Monteverde. I have never found a nest of the species.
This species is similar to M. compressumHNS and, to a lesser extent, to M. cyaneumHNS. A characteristic that appears to separate it from similar species is the petiolar profile, which in frontal view is flat to weakly concave.
Found most commonly in these habitats: 2 times found in littoral scrub, 1 times found in scrubby 2nd growth, 3 times found in mature wet forest, 2 times found in 2º wet forest, 2 times found in abandoned garden, 1 times found in agricultural area near forest, 1 times found in tropical dry scrub, 0 times found in Tropical hardwood forest, 2 times found in Port of entry, 1 times found in scrub forest, ...
Collected most commonly using these methods or in the following microhabitats: 7 times search, 4 times Winkler, 4 times hand collection, 3 times bait, 4 times MiniWinkler, 3 times hand collecting, 0 times On tree trunk, 0 times At bait, 2 times MaxiWinkler, 1 times baiting, 1 times Berlese, ...
Elevations: collected from 2 - 1560 meters, 293 meters average