Poneracantha cuneiforma

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Poneracantha cuneiforma
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ectatomminae
Tribe: Ectatommini
Genus: Poneracantha
Species: P. cuneiforma
Binomial name
Poneracantha cuneiforma
(Lattke, 1995)

Gnamptogenys cuneiforma casent0179972 d 1 high.jpg

Specimen Labels

Nothing is known about the biology of Poneracantha cuneiforma.

Identification

A member of the rastrata complex (in the rastrata subgroup of the rastrata species group). This species may be confused with two other small rastrata group species: Poneracantha rastrata and Poneracantha mecotyle. It is separable from the former on account of the longer scapes (surpassing the vertexal margin), transverse costulae on the propodeum as opposed to longitudinal, and a well-defined metapleura, separated from the propodeum laterally by an impressed line, lacking in P. rastrata. The costulae of P. mecotyle have a coarse aspect in contrast with the smooth regularity in P. cuneiforma, P. mecotyle also has the striae on the scapes and dorsal mandibuar surface better defined and the masticatory border lacks the concavity of P. cuneiforma. (Lattke 1995)

Keys including this Species

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: 9.8712602° to 8.783333333°.

 
North
Temperate
North
Subtropical
Tropical South
Subtropical
South
Temperate

Distribution based on Regional Taxon Lists

Neotropical Region: Panama (type locality).

Distribution based on AntMaps

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Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.
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Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.
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Biology

Castes

Images from AntWeb

Gnamptogenys cuneiforma casent0179972 h 2 high.jpg
Paratype of Gnamptogenys cuneiformaWorker. Specimen code casent0179972. Photographer Erin Prado, uploaded by California Academy of Sciences. Owned by MIZA, Maracay, Venezuela.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • cuneiforma. Gnamptogenys cuneiforma Lattke, 1995: 164 (w.) PANAMA.
    • Type-material: holotype worker, 3 paratype workers.
    • Type-locality: holotype Panama: Bocas del Toro, 8°47’N, 82°11’W, 500 m., 16-18.vii.1987 (D.M. Olson); paratypes with same data.
    • Type-depositories: MCZC (holotype); MCZC, MIZA (paratypes).
    • Combination in Poneracantha: Camacho, Franco, Branstetter, et al. 2022: 11.
    • Status as species: Lattke, et al. 2007: 263 (in key); Camacho, et al. 2020: 461 (in key); Camacho, Franco, Branstetter, et al. 2022: 11.
    • Distribution: Costa Rica, Panama.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Head subquadrate in frontal view, sides very broadly convex, slightly wider anteriorly than posteriorly, posterior margin broadly concave, longitudinally castulate. Anterior clypeal margin with a small lamella, medianly straight and laterally rounded. A brief longitudinal carinae, thicker than surrounding sculpture, present between frontal lobes. Mandibles triangular and elongate, masticatory border concave, dorsal surface of blade convex and with longitudinal rugulae. Scapes shining and with low rugosities. Scapes without pilosity, only decumbent hairs.

Anterior pronotal face with 4-5 transverse costulae, sometimes quite rough and resembling rugae, longitudinal costulate on the dorsum posterad including the mesonotum. Metanotum and propodeum with transverse costae.

Promesonotal suture well to poorly impressed, metanotal groove well impressed. In lateral view the mesosoma has a very broadly convex dorsal margin, propodeal denticles brief and triangular, declivity concave. Sides of pronotum with regular longitudinal, slightly oblique costae. Anepisternum fulcrum shaped . Katepisternum with a well-developed flange. Mesopleura, propodeum and dorsal two-thirds of metapleura with transverse/oblique costae; metapleura ventrad of spiracle with longitudinal costae.

Petiole in lateral view with a low and broadly convex dorsal margin, ventral process projects anterad. Dorsally with transverse costae, posterior margin rugose. Gastric dorsum with longitudinal costulation; ventrum of postpetiole with transverse rugae along posterior half; irregular rugulae anterad to the process.

Base of foretarsus with a single stout setae opposite the strigil. Forecoxae with transverse costulae on lateral face, as well as dorsal faces of meso- and meta coxae. Legs shining and with abundant shallow punctulae. Very sparse pilosity on femora and tibiae. Color ferruginous to dark brown; mandibles, antennae and legs ferruginous.

Type Material

Holotype worker: Panama, Bocas del Toro, 8°47'N 82°1l'W, 500m; 16/18-VII-87, D. M. Olson, leg. Deposited in Museum of Comparative Zoology. Paratypes: One worker deposited in MCZC and two workers deposited in Instituto de Zoologia Agricola, all with same locality data as the holotype.

Etymology

The name alludes to the shape of the anepisternum.

References

References based on Global Ant Biodiversity Informatics

  • Fernández, F. and S. Sendoya. 2004. Lista de las hormigas neotropicales. Biota Colombiana Volume 5, Number 1.
  • Lattke J. E. 1995. Revision of the ant genus Gnamptogenys in the New World (Hymenoptera: Formicidae). Journal of Hymenoptera Research 4: 137-193
  • Longino J. T. L., and M. G. Branstetter. 2018. The truncated bell: an enigmatic but pervasive elevational diversity pattern in Middle American ants. Ecography 41: 1-12.
  • Longino J. et al. ADMAC project. Accessed on March 24th 2017 at https://sites.google.com/site/admacsite/