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Costa Rica, Mexico. Costa Rica: Monteverde.
This is a local variant of L. praedator. I know it mainly from six different collections in Monteverde, all within an area of a square kilometer or so. It forms massive carpet raids, like L. praedator, and the raids can be day or night. This is a montane cloud forest site, with a sharp transition to moist forest and dry forest as one descends on the Pacific slope. The collections have all been from the ridge crest cloud forest at 1500m down to the strip of moist forest just below the community, around 1350m. Typical L. praedator is common just a few kilometers away in the upper Rio Pe–as Blancas valley, at 1200m and below. Montane sites in other Cordilleras in Costa Rica have typical L. praedator.
On cursory examination of L. praedator in museum collections I have seen considerable variation in the strength of sculpture, but nothing approaching the highly polished condition of this Monteverde form, with the exception of one specimen. The additional specimen is from Encarnaci—n, Campeche, Mexico. It was collected by H. M. Smith in 1936, from the stomach of the frog Hypopachus variolosus. In Costa Rica this population appears to be a highly differentiated form of L. praedator, isolated on one mountain, and micro-parapatric with typical praedator. The occurrence of the Mexican specimen suggests that other populations of the shiny-face form exist. It remains to be seen whether some form of local selection can cause independent and convergent instances of this phenotype, or if it is a species with an ancestry separate from L. praedator.
Found most commonly in these habitats: 1 times found in scrubby vegetation in moist forest habitat, 1 times found in wet forest, 1 times found in 2º lowland rainforest, 1 times found in cloud forest edge, 1 times found in tropical rainforest, 1 times found in moist forest, 1 times found in montane wet forest.
Found most commonly in these microhabitats: 1 times column on road, 1 times column on trail, 1 times blue pan trap, 1 times swarm raid, 1 times pit fall, 1 times moist forest; swarm raid, 1 times Massive carpet swarm; Sendero Bajo el Tigre, below Pension Quetzal. Moist forest, 1 times Huge column crossing road near our house., 1 times foragers, 1 times ex stomach of frog Hypopachus variolosus, U. ill. #31265, 1 times ex sifted leaf litter, ...
Collected most commonly using these methods: 8 times search, 1 times blue pan trap, 1 times pit fall, 1 times MaxiWinkler.
Elevations: collected from 40 - 1500 meters, 994 meters average