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Costa Rica to Honduras
This species occurs in rain forest and cloud forest habitats, from 550–1420 m elevation. All specimens are from Winkler samples of sifted leaf litter. At three cloud forest sites in Nicaragua it occurred in 5-10% of 100 miniWinkler samples. In Costa Rica, it is known from one collection near Turrialba, a site on the Atlantic slope of the Cordillera Volcánica Central, yet is unknown from the intensively sampled Barva Transect a short distance away.
Diagnosis. Labrum broader than long, anterior margin bilobed on each side of medial notch, ectal lobule rounded and the same length as or shorter than mesal lobule; first gastral tergite with abundant, short, strongly spatulate squamiform setae uniformly covering surface.
Description. Worker. HW 0.66–0.80 (n=6); mandible with two or three teeth on masticatory margin (can vary within individuals, with two teeth on one mandible and three teeth on the other), second tooth from base largest; subapical tooth with distinct reclinate denticle at base; subapical tooth about twice as long as apical tooth; intercalary teeth prominent, one closest to apical tooth about half as long as apical tooth; labrum trapezoidal, wider than long, anterior margin bilobed on each side of medial notch, ectal lobule rounded and the same length as or shorter than mesal lobule; arcuate promesonotal groove and metanotal groove strongly impressed; propodeal tooth large, triangular, right-angled to acute, infradental lamella broad beneath tooth, narrowing ventrally; first gastral tergite with abundant, short, strongly spatulate squamiform setae uniformly covering surface. The queen and male are unknown.
Found most commonly in these habitats: 10 times found in cloud forest, 9 times found in ridgetop cloud forest, 2 times found in mixed hardwood forest, 1 times found in Liquidambar-hardwood forest, 3 times found in montane wet forest, 1 times found in tropical rainforest, with some big trees, probably a mix of primary and secondary forest, near a small stream, 1 times found in wet forest, 1 times found in tropical rainforest, with big trees, probably primary.
Found most commonly in these microhabitats: 28 times ex sifted leaf litter.
Collected most commonly using these methods: 22 times miniWinkler, 5 times MaxiWinkler, 1 times Winkler.
Elevations: collected from 200 - 1610 meters, 1161 meters average
Type specimens: holotype Rhopalothrix therion: casent0616292; paratype Rhopalothrix therion: casent0616286, casent0629584, casent0629585
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