Odontoponera

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Odontoponera
Odontoponera transversa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Ponerini
Alliance: Odontomachus genus group
Genus: Odontoponera
Mayr, 1862
Type species
Ponera denticulata, now Odontoponera denticulata
Diversity
4 species
(Species Checklist)

Odontoponera-L1.25x.jpg

Odontoponera transversa

Odontoponera-D1.6x.jpg

Odontoponera is a small genus with two species and 3 subspecies restricted to Southeast Asia, where it is one of the most commonly observed ants.

Identification

Schmidt and Shattuck (2014) - Workers of Odontoponera are easily differentiated from other ponerines by their denticulate anterior clypeal margin, toothed pronotal margins, denticulate-emarginate petiolar scale and a small, ventrally-directed tooth at the apex of the hypopygium, all of which are autapomorphic within Ponerinae. The strong striate sculpturing of Odontoponera is also characteristic, though Diacamma, Ectomomyrmex and Paltothyreus also have striate sculpturing (these genera lack the other diagnostic characters of Odontoponera).

Keys including this Genus

Distribution

Odontoponera is restricted to Southeast Asia, where its range stretches from India to the Philippines and from southern China to the Lesser Sunda Islands of southern Indonesia (Creighton, 1929).

World distribution based on political regions. View/Edit Data
Odontoponera Distribution.png Worlddistribution legend.jpg

Species richness

Species richness by country based on regional taxon lists (countries with darker colours are more species-rich). View Data

Odontoponera Species Richness.png

Biology

Odontoponera Shattuck 54675 Danum Valley Sabah-web.jpg

Schmidt and Shattuck (2014) - Virtually nothing is known about the social behavior of Odontoponera, but the genus has received some attention from ecologists due to its abundance. For example, Wheeler & Chapman (1925) noted the abundance of Odontoponera at a site in the Philippines, and it was common in a Bornean rainforest (Berghoff et al., 2003), was one of the dominant ants in a study in Vietnam (Eguchi et al., 2004), was the dominant ground-nesting ant in a study in Thailand (Sitthicharoenchai & Chantarasawat, 2006), was one of the most abundant ants in a forest in southern China (Zhou et al., 2007), and one of us (CAS) frequently observed it in a rainforest in peninsular Malaysia. Levy (1996) reported a density of 3,000 nest entrances per hectare in a Bornean rainforest. Colonies have over 100 workers, and the polydomous subterranean nests are linked by interconnecting tunnels (Berghoff et al., 2003).

Odontoponera workers are predominantly epigeic foragers and are generalist predators and scavengers (Levy, 1996; Hashimoto et al, 1997; Berghoff et al., 2003; Pfeiffer et al., 2006; Zhou et al., 2007). Wheeler & Chapman (1925) noted that, in the Philippines, Odontoponera "is especially fond of termites and is often seen raiding their colonies." Remarkably, Berghoff et al. (2003) observed that Odontoponera workers are effective at guarding their nest entrances from marauding Dorylus army ants and that the Odontoponera workers actually prey on the Dorylus. Ants and termites made up nearly half of the food items collected by Odontoponera transversa workers in the study by Levy (1996). Workers only forage within about a meter from the nest entrances (Eguchi et al., 2004).

Morgan et al. (1999, 2003) studied the mandibular gland and abdominal gland secretions of Odontoponera, and Leluk et al. (1989) examined the protein composition of Odontoponera venom.

Castes

Morphology

Worker Morphology

 • Antennal segment count 12 • Antennal club absent-gradual • Palp formula 4,4 • Total dental count 5-6 • Spur formula 2 (1 simple, 1 pectinate), 2 (1 simple, 1 pectinate) • Sting present

Male Morphology

 • Antennal segment count 13 • Antennal club 0 • Palp formula 6,4 • Total dental count 0 • Spur formula 2 (1 simple-barbulate, 1 barbulate-pectinate), 2 (1 simple-barbulate, 1 pectinate)

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • ODONTOPONERA [Ponerinae: Ponerini]
    • Odontoponera Mayr, 1862: 717. Type-species: Ponera denticulata (junior synonym of Ponera transversa), by monotypy.

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

Description

Schmidt and Shattuck (2014):

Worker

Medium-sized (TL 9–12 mm; Bingham, 1903) ants with the standard characters of Ponerini. Mandibles short, triangular and massive, with a basal groove. Clypeus with a denticulate anterior margin. Eyes fairly small, placed anterior of head midline, with a subtle preocular carina (often difficult to distinguish from the striate sculpturing of the head). Pronotum with a short spine at each anterodorsal corner. Metanotal groove very shallowly impressed or reduced to a simple suture. Propodeum narrowed dorsally, the posterior margins with shallow denticulate ridges. Propodeal spiracle ovoid. Metatibial spur formula (1s, 1p). Petiole squamiform, with a sharp denticulate and emarginate dorsal margin. Gaster with only a weak girdling constriction between pre- and postsclerites of A4. Stridulitrum present on pretergite of A4. Head and mesosoma deeply striate, the gaster only lightly punctate. Head and body with scattered pilosity and only light pubescence. Color ferrugineous to black.

Queen

Similar to worker but larger (TL 11–13 mm; Bingham, 1903) and winged.

Male

See description in Smith (1858).

Larva

Described by Wheeler & Wheeler (1952).

References

  • Ashmead, W. H. 1905c. A skeleton of a new arrangement of the families, subfamilies, tribes and genera of the ants, or the superfamily Formicoidea. Can. Entomol. 37: 381-384 (page 382, Odontoponera in Pachycondylinae, Pachycondylini)
  • Bolton, B. 2003. Synopsis and Classification of Formicidae. Mem. Am. Entomol. Inst. 71: 370pp (page 165, Odontoponera in Ponerinae, Ponerini)
  • Dalla Torre, K. W. von. 1893. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus. Vol. 7. Formicidae (Heterogyna). Leipzig: W. Engelmann, 289 pp. (page 30, Odontoponera in Ponerinae)
  • Emery, C. 1895l. Die Gattung Dorylus Fab. und die systematische Eintheilung der Formiciden. Zool. Jahrb. Abt. Syst. Geogr. Biol. Tiere 8: 685-778 (page 767, Odontoponera in Ponerinae, Ponerini)
  • Emery, C. 1911e. Hymenoptera. Fam. Formicidae. Subfam. Ponerinae. Genera Insectorum 118: 1-125 (page 60, Odontoponera in Ponerinae, Ponerini [subtribe Pachycondylini])
  • Forel, A. 1900f. Les Formicides de l'Empire des Indes et de Ceylan. Part VII. J. Bombay Nat. Hist. Soc. 13: 303-332 (page 314, Odontoponera in Ponerinae, Ponerini)
  • Forel, A. 1917. Cadre synoptique actuel de la faune universelle des fourmis. Bull. Soc. Vaudoise Sci. Nat. 51: 229-253 (page 237, Odontoponera in Ponerinae, Ponerini)
  • Mayr, G. 1862. Myrmecologische Studien. Verh. K-K. Zool.-Bot. Ges. Wien 12: 649-776 (page 717, Odontoponera as genus; page 713, Odontoponera in Ponerinae [Poneridae] (diagnosis in key))
  • Mayr, G. 1865. Formicidae. In: Reise der Österreichischen Fregatte "Novara" um die Erde in den Jahren 1857, 1858, 1859. Zoologischer Theil. Bd. II. Abt. 1. Wien: K. Gerold's Sohn, 119 pp. (page 12, Odontoponera in Ponerinae (Poneridae))
  • Schmidt, C.A. & Shattuck, S.O. 2014. The higher classification of the ant subfamily Ponerinae (Hymenoptera: Formicidae), with a review of ponerine ecology and behavior. Zootaxa. 3817, 1–242 (doi:10.11646/zootaxa.3817.1.1)
  • Wheeler, W. M. 1910b. Ants: their structure, development and behavior. New York: Columbia University Press, xxv + 663 pp. (page 135, Odontoponera in Ponerinae, Ponerini)
  • Wheeler, W. M. 1922i. Ants of the American Museum Congo expedition. A contribution to the myrmecology of Africa. VII. Keys to the genera and subgenera of ants. Bull. Am. Mus. Nat. Hist. 45: 631-710 (page 646, Odontoponera in Ponerinae, Ponerini)