Nothing is known about the biology of Gnamptogenys ilimani.
- 1 Identification
- 2 Distribution
- 3 Biology
- 4 Castes
- 5 Nomenclature
- 6 References
- 7 References based on Global Ant Biodiversity Informatics
A member of the strigata complex (in the strigata subgroup of the striatula species group). This species is nearest to Gnamptogenys strigata and Gnamptogenys pittieri but they are separable on several on several accounts: the posterior petiolar node face is not sharply set off and has raised costulae; in dorsal view their node is anteriorly convex, not straight; standing hairs on the body and especially the scapes are abundant, scape pilosity is longer. In G. pittieri the anterior transverse costulae of the pronotum curve around gently at the sides. (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 ilimani. 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 Online Catalogue of the Ants of the World.
- ilimani. Gnamptogenys ilimani Lattke, 1995: 171 (w.q.) BOLIVIA.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Holotypes (Paratypes) measurements: HL 0.90 (0.84-0.90); HW 0.78 (0.72-0.78); ML 0.30 (0.26-0.32); ED 0.14 (0.14-0.18); SL 0.70 (0.70-0.72); WL 1.20 (1.12-1.20) mm; CI 0.87 (0.84-0.88); SI 0.90 (0.92-0.97); OI 0.19 (0.18-0.27) n=5.
Coarsely costulate strigata group species. With head in frontal view vertexal margin convex; anterior pronotal face with 3-4 costulae that sharply bend back laterally to become longitudinal; declivitous propodeal face with longitudinal costulae; node anteroposteriorly compressed, its posterior face sharply marginate laterally with a flat to slightly concave surface and effaced sculpture; anterior postpetiolar face with 2-3 transverse costulae, rest longitudinal; postpetiolar sternum with longitudinal costulae; lateral mesocoxal face with oblique, rough costulae and that of metacoxae with rough rugulae; metacoxal tooth low and triangular. Body black with yellow-brown legs and scapes; abundant appressed pilosity on legs and scapes, but no standing hairs.
Measurements: HL 0.88 (0.88); HW 0.72 (0.74); ED 0.20 (0.18); SL 0.72 (0.72); WL 1.28 (1.20) n = 2. Differences from workers are the usual; caste differences, though the node is more disciform.
Holotype worker. Bolivia, 22 km N Caranavi, Vivero Ilimani, 1700 m, 22-VI-81, C. Kugler, leg. Primary forest clearing with Cinchona, nest in rotten wood. Deposited in the Instituto de Zoologia Agricola. Paratypes: paranidotypic workers from the same nest as the holotype. Deposited in each of the following: The Natural History Museum, Los Angeles County Museum of Natural History, MUSP, Museum of Comparative Zoology, MIZA.
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 171, worker, queen 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.
References based on Global Ant Biodiversity Informatics
- Lattke J. E. 1995. Revision of the ant genus Gnamptogenys in the New World (Hymenoptera: Formicidae). Journal of Hymenoptera Research 4: 137-193