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Mexico, Guatemala (type locality), Costa Rica. Costa Rica: widespread in lowland wet forest, including the Osa Peninsula, Hitoy Cerere, La Selva Biological Station and surrounding Atlantic slope sites to 1000m, Penas Blancas Valley, and the Pitilla area of Guanacaste Conservation Area. Appears less common on Pacific side (one record from the Osa Peninsula, Ranch Quemado) than on the Atlantic side (many records).
Workers and queens occur in samples of sifted leaf litter from the forest floor. Mike Kaspari collected a specimen at a barley bait in the La Selva successional plots.
|Lachnomyrmex scrobiculatus||Feitosa, R. M. & Brandão, C. R. F., 2008, A taxonomic revision of the Neotropical myrmicine ant genus Lachnomyrmex Wheeler (Hymenoptera: Formicidae), Zootaxa 1890, pp. 1-49: 40-41, (download)||40-41||21837|
|Lachnomyrmex scrobiculatus||Brown, W. L., 1950, Morphological, taxonomic and other notes on ants., Wasmann Journal of Biology 8, pp. 241-250: 249, (download)||249||2360|
Found most commonly in these habitats: 300 times found in mature wet forest, 132 times found in tropical rainforest, 63 times found in montane wet forest, 54 times found in 2º lowland tropical rainforest, 43 times found in tropical moist forest, 29 times found in tropical wet forest, 24 times found in lowland rainforest, 21 times found in 2º lowland rainforest, 20 times found in wet forest, 20 times found in 2º tropical rainforest, ...
Found most commonly in these microhabitats: 718 times ex sifted leaf litter, 51 times Hojarasca, 1 times Hojarasca., 1 times 25yr old second growth just above Casa Plastico. Ex sifted leaf litter on ground, 2 times Wet forest. Ex sifted leaf litter., 3 times sifted litter, 3 times Muestra tomada alrrededor de M/20, 1 times leaf litter, 1 times Bosque Primario, Suelo, 2 times at bait, 1 times Wet forest; ex sifted leaf litter. Old second growth veg., ...
Collected most commonly using these methods: 592 times MiniWinkler, 57 times Winkler, 91 times MaxiWinkler, 55 times Mini Winkler, 13 times Berlese, 2 times baiting, 1 times flight intercept trap, 1 times Malaise, 1 times search, 1 times Sweeping, 1 times Berlese/Winkler, ...
Elevations: collected from 20 - 2150 meters, 279 meters average
Type specimens: type: jtl0002358