Nothing is known about the biology of Gnamptogenys siapensis.
A member of the lucaris complex (in the ericae subgroup of the sulcata species group). This species is quite near to Gnamptogenys lucaris and the differences between the two species may be infraspecific: in lucaris the petiolar node dorsum is evenly convex, the metacoxal tooth is broadly triangular and the subpetiolar process has acutely pointed angles. (Lattke 1995)
Keys including this Species
Distribution based on Regional Taxon Lists
Distribution based on AntMaps
Distribution based on AntWeb specimens
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Not much is known about the the biology of Gnamptogenys siapensis. We can speculate that the biology of this species is similar to other species of the genus. Gnamptogenys are predatory ponerine ants that inhabit tropical and subtropical mesic forests. Nesting is typically at ground level in rotten wood or leaf litter. Some exceptions include species that are arboreal, a dry forest species and species that nests in sandy savannahs. Colony size tends to be, at most, in the hundreds. Queens are the reproductives in most species. Worker reproduction is known from a few species in Southeastern Asia. Generalist predation is the primary foraging/dietary strategy. Specialization on specific groups (millipedes, beetles, other ants) has developed in a few species.
The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.
- siapensis. Gnamptogenys siapensis Lattke, 1995: 183, figs. 62, 63 (w.) VENEZUELA.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
HL 1.13; ML 0.44; HW 1.00; ED 0.25; SL 0.97; WL 1.60 mm; CI 0.89; SI 0.97; OI 0.25.
Cephalic dorsum with fine longitudinal costulae; eyes placed behind mid length; clypeal lamella anteriorly straight and laterally bluntly angulose; mandibles smooth and shining, subtriangular with apical and basal margins joined through broad convexity; scapes smooth and shining, surpassing vertexal margin, antennal bullae partially visible beneath frontal lobes; costulae longitudinal throughout mesosomal dorsum, propodeal declivity and petiolar node; promesonotal and mesometanotal sutures weakly impressed; mesometapleural suture well impressed; petiolar node more or less as long as wide, in lateral view subquadrate; subpetiolar process subquadrate, with angulate ventral corners; postpetiolar sternum medially smooth and shining and with lateral longitudinal costulae; tibiae and femora smooth and shining; metacoxae with basal triangular lobe, dorsally transversely costulate and laterally mostly smooth and shining; abundant long suberect and subdecumbent hairs on body. Color ferruginous.
Holotype worker. Venezuela, Amazonas: Alto Rio Siapa, l°40'N 64°35'W, 600 m, 4-II-89, J. Lattke, leg. Sifted leaf litter sample. The specimen was caught in an area occasionally flooded during the rainy season. Deposited in Instituto de Zoologia Agricola.
The species name alludes to the type locality.
- Lattke, J. E. 1995. Revision of the ant genus Gnamptogenys in the New World (Hymenoptera: Formicidae). J. Hym. Res. 4: 137-193. PDF (page 183, figs. 62, 63 worker described)
- Lattke, J.E., Fernández, F. & Palacio, E.E. 2007. Identification of the species of Gnamptogenys Roger in the Americas (pp. 254-270). In Snelling, R.R., Fisher, B.L. & Ward, P.S. (eds). Advances in ant systematics: homage to E.O. Wilson – 50 years of contributions. Memoirs of the American Entomological Institute 80: 690 pp. PDF