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Subspecies: Camponotus (Myrmobrachys) brasiliensis costaricanus   Özdikmen, 2010 

Classification:

See Also:

Camponotus brasiliensis

Taxonomic History (provided by Barry Bolton, 2021)

Camponotus brasiliensis costaricanus Özdikmen, 2010a PDF: 521. AntCat AntWiki

Taxonomic history

Replacement name for Camponotus brasiliensis antennatus Santschi, 1925. [Junior primary homonym of Camponotus canescens antennatus Santschi, 1920.]
// Distribution

Distribution:

  Geographic regions (According to curated Geolocale/Taxon lists):
    Americas: Brazil, Costa Rica, Ecuador, French Guiana, Panama, Peru
  Biogeographic regions (According to curated Bioregion/Taxon lists):
    Neotropical

Distribution Notes:

Costa Rica: Lowland to montane habitats throughout country.

Biology:

This species is common in lowland wet or dry habitats, and can be found at mid to upper elevations (e.g. 1200m elevation around Las Alturas, to 900m on road to Monteverde). In lowland sites it can occur in both mature and second growth forest, but at higher elevations is increasingly restricted to open or disturbed habitats. The workers are commmon diurnal foragers on vegetation, often visiting extrafloral nectaries, and the species is common in canopy fogging samples from La Selva Biological Station. I have observed nests five times, and all have been in dead wood. One was in a standing fencepost, one was in branches of a 5m tall Cecropia angustifolia tree, and the others have been in dead branches of various trees.

One of the nests was in Corcovado National Park. A small dead tree had fallen across the trail, and highly agitated workers on the surface revealed the presence of a nest inside. The trunk varied from 3 to 4.5cm diameter, of white fairly hard wood. The core was a corky pith about 1.5 cm diameter. The workers had tunneled out the pith and there were pockets of small brood in the center. There were flat chambers just under the bark which had many pupae. The workers were weak biters. I found a single queen in the center of the nest.

One colony was in a recent branchfall in the lab clearing at La Selva. The branch was covered with epiphytes, and the branch itself was riddled with cavities. Workers were scattered in cavities throughout the branch, in dead stems and among epiphyte roots. Some of the nest chambers were packed with adult males, but no colony queen and no alate queens were found.

When I found the species in the Cecropia angustifolia tree, there were several widely separated nests. These were probably parts of one polydomous colony.

Four times I have found lone founding queens in dead sticks in vegetation.

These observations all suggest that the species is monogynous and polydomous, maintaining a central nest with the single colony queen and transporting brood to satellite nests.

Comments:

= Longino morphospecies JTL056.

Specimen Habitat Summary

Found most commonly in these habitats: 4 times found in SSO 350m, 5 times found in rainforest, 6 times found in rainforest edge, 3 times found in roadside vegetation, 1 times found in pasture/cloud forest edge, 1 times found in CCL 840M, 1 times found in wet forest, 1 times found in dry forest, 1 times found in dry scrubby veg., 2 times found in mature wet forest, ...

Found most commonly in these microhabitats: 9 times on low vegetation, 1 times Virola canopy, in dead stick, 3 times Malaise trap, 1 times dead branchfall, in stems and epiphytes, 1 times beating veg., 1 times workers abundant on and entering holes of a dead post., 1 times nest in dead wood, 1 times ex Sacoglottis trichogyna (Humiriaceae), 1 times Virola canopy, foragers, 1 times strays, 1 times on vegetation, ...

Collected most commonly using these methods: 15 times Fogging, 6 times search, 4 times Malaise, 2 times beating vegetation (3 hours), 1 times beating, 1 times mostly beating vegetation, some hand collections from treefall, 1 times beating vegetation, 1 times beating vegetation (2.5 hours), 00-12 times beating vegetation, 10.

Elevations: collected from 10 - 1280 meters, 349 meters average

Collect Date Range: collected between 1937-02-08 and 2020-01-20

Type specimens: Lectotype of Camponotus brasiliensis antennatus: casent0911721; paralectotype of Camponotus brasiliensis antennatus: casent0911722



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