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Species: Trachymyrmex JTL003

Classification:
Download Data

Distribution:


Neotropical Region: Costa Rica

Distribution Notes:

Costa Rica: throughout country in mid-elevation sites (above 500m).

Biology:

Natural History:

This species is relatively common in mid-elevation sites, in mature forest habitats. I have found it at the 1070m and 1500m sites on the Barva Transect in Braulio Carrillo National Park, at Refugio Eladio in the Penas Blancas Valley east of Monteverde, at Estacion Cacao in the Guanacaste Conservation Area, and in the small cloud forest on the highest ridges of the Osa Peninsula in Corcovado National Park.

The quantitative sampling on the Barva Transect by the ALAS project yielded workers in Winkler samples, flight intercept traps, Malaise traps, and sweep net samples. At Penas Blancas I have found foragers on the trails. At Cacao I excavated an entire nest. It was in a clay bank along the trail, at the edge of the mature forest below the station building. There were two chambers, an upper one relatively near the surface, and a lower one about 20cm deep. The upper chamber contained only small fungus masses; the lower chamber contained the colony queen and a much larger fungus mass. I scooped the contents into a plastic bag, and a few minutes later observed an adult diapriid male in the bag (I gave the specimen to Lubomir Masner that evening).

Specimen Habitat Summary

Found most commonly in these habitats: 54 times found in montane wet forest, 5 times found in mature wet forest, 5 times found in cloud forest, primary, along steep ridge near peak, 4 times found in wet forest, 2 times found in cloud forest, 3 times found in tropical rainforest, 1 times found in Cacao, 1 times found in montane rainforest, 2 times found in cloud forest, primary, near ridgetop, Agricultural Land times found in Disturbed, ...

Found most commonly in these microhabitats: 29 times Hojarasca, 19 times ex sifted leaf litter, 11 times at bait, 3 times Hojarasca, en bosque paralelo al sendero gradiente fuerte y al lado de paredon, 1 times nest in clay soil, 1 times en el suelo, 1 times Cloud forest above Rio Nino, 700m elevation. General collecting on trail and ve, 2 times bajo de M/06, leptogenys trachymyrmex running in front of Labidus spinino times wet forest, #2035-s, 1 times wet forest at night; nest in soil, 2 times Sobre Vegetacion, ...

Collected most commonly using these methods: 35 times Mini Winkler, 12 times search, 11 times Baiting, 10 times miniWinkler, 6 times Winkler, 5 times flight intercept trap, 4 times maxiWinkler, 4 times Malaise, 2 times Sweeping, 2 times Berlese, 1 times Pan Trap, ...

Elevations: collected from 40 - 1730 meters, 1061 meters average

Type specimens:



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