dcsimg

Biology

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Longino notes:

This species occurs in mid-elevation wet forest habitats. So far it is known only from the Volcan Barva transect in Braulio Carrillo National Park, from 500-1100m elevation. I collected a nest in a treefall gap, in the 1.25cm diameter live stem of a melastome vine. It contained 32 workers, 1 dealate queen, and abundant brood of various sizes. One specimen was collected in a Project ALAS sweep sample, and another in a canopy fogging sample. Workers have been collected as foragers on low vegetation.

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AntWeb. Version 8.45.1. California Academy of Science, online at https://www.antweb.org. Accessed 15 December 2022.
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Distribution Notes

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Costa Rica: mid-elevation Atlantic slope.

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AntWeb. Version 8.45.1. California Academy of Science, online at https://www.antweb.org. Accessed 15 December 2022.
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Identification

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Worker: Antenna 11-segmented; eye with about 11 ommatidia across greatest diameter; mandible smooth and shiny to weakly striate; all surfaces of body shiny; generally smooth and polished except for about 5 longitudinal rugae between eye and antennal insertion, about 6 longitudinal rugae on promesonotum, a few longitudinal rugulae on dorsal face of propodeum, about 3 longitudinal rugae on ventral half of side of pronotum, irregular rugulae on katepisternum and side of propodeum, about 4 longitudinal rugae on side and dorsum of petiole; side and dorsum of pronotum flat, meeting at carinate right angle; propodeal spiracles large, horizontal, opening dorsally; inferior propodeal lobes large, produced as an acute but rounded angle; anteroventral margin of petiole with acute, ventrally-directed tooth; scapes with abundant erect setae, these shorter than maximum width of scape, and with abundant underlying suberect pubescence; face with abundant short erect setae, these about as long as setae on scapes; in full face view abundant short suberect setae projecting from sides of head and margin of vertex; mesosomal and petiolar dorsa with abundant flexuous setae, these longer than those on face, longest about as long as propodeal spines; postpetiole, gastral dorsum, femora, and tibiae with abundant erect setae, these about as long as those on scapes and face; color red brown.

Measurements (holotype): HL 0.764, HW 0.722, SL 0.603, MeL 0.938.

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cc-by-nc-sa-4.0
copyright
California Academy of Sciences
bibliographic citation
AntWeb. Version 8.45.1. California Academy of Science, online at https://www.antweb.org. Accessed 15 December 2022.
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Taxonomic History

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Nesomyrmex vargasi Longino, 2006b PDF: 136, figs. 11, 12 (w.q.) COSTA RICA. Neotropic. AntCat AntWiki HOL
license
cc-by-nc-sa-4.0
copyright
California Academy of Sciences
bibliographic citation
AntWeb. Version 8.45.1. California Academy of Science, online at https://www.antweb.org. Accessed 15 December 2022.
original
visit source
partner site
Antweb