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Aenictus orientalis
| Aenictus orientalis | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Dorylinae |
| Genus: | Aenictus |
| Species: | A. orientalis |
| Binomial name | |
| Aenictus orientalis (Karavaiev, 1926)
| |
Identification
A member of the ceylonicus group.
Key to Aenictus species groups
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -6° to -7.199999809°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia (type locality), New Guinea.
Distribution based on AntMaps
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
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| Syntype of Eciton ceylonicus orientalis. Worker. Specimen code casent0916856. Photographer Kate Martynova, uploaded by California Academy of Sciences. | Owned by SIZK, Kiev, Ukraine. |
Known only from the worker caste.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- orientalis. Eciton (Aenictus) ceylonicus subsp. orientalis Karavaiev, 1926d: 423, fig. 2 (w.) INDONESIA (Aru Is).
- Type-material: syntype workers (number not stated, “numerous”).
- [Notes (i): Kostyuk, 1976: 93, cites 64w syntypes SIZK; (ii) Radchenko, Fisher, et al. 2023: 17, cite 43w syntypes SIZK.]
- Type-locality: Indonesia: Aru Is, Wammar I., 19.iii.1913 (W. Karawajew).
- Type-depositories: ANIC, SIZK.
- Subspecies of ceylonicus: Chapman & Capco, 1951: 11.
- Junior synonym of ceylonicus: Wilson, 1964a: 452; Bolton, 1995b: 60; Zhou, 2001b: 59.
- Status as species: Shattuck, 2008c: 18.
- Senior synonym of papuanus: Shattuck, 2008c: 18.
- Senior synonym of similis: Shattuck, 2008c: 18.
- Distribution: Indonesia (Aru, Irian Jaya), Papua New Guinea.
- papuanus. Aenictus papuanus Donisthorpe, 1941c: 129 (w.) NEW GUINEA (Papua New Guinea).
- Type-material: syntype workers (number not stated, “a number of workers”).
- Type-locality: Papua New Guinea: Mafulu, Wharton Range, 4000 ft, xii.1933, no. 556 (L.E. Cheesman).
- Type-depositories: BMNH, MCZC.
- Status as species: Chapman & Capco, 1951: 11; Chapman, 1963: 253.
- Junior synonym of ceylonicus: Wilson, 1964a: 452; Bolton, 1995b: 60; Zhou, 2001b: 59.
- Junior synonym of orientalis: Shattuck, 2008c: 18.
- similis. Aenictus similis Donisthorpe, 1948g: 131 (w.) NEW GUINEA (Indonesia).
- Type-material: 14 syntype workers.
- Type-locality: Indonesia: Irian Jaya (“Dutch New Guinea”), Maffin Bay, 8.viii.1944 (E.S. Ross).
- Type-depositories: CASC, MCZC.
- Status as species: Chapman & Capco, 1951: 12.
- Junior synonym of ceylonicus: Wilson, 1964a: 452; Bolton, 1995b: 60; Zhou, 2001b: 59.
- Junior synonym of orientalis: Shattuck, 2008c: 18.
- Eciton (Aenictus) ceylonicus subsp. orientalis: Three worker syntypes from Wammar, Aru Island, Indonesia (Australian National Insect Collection).
- Aenictus papuanus: Two worker syntypes from Malufu, Wharton Range, Papua New Guinea (Museum of Comparative Zoology).
- Aenictus similis: Fourteen worker syntypes from Maffin Bay, Irian Jaya, Indonesia (2 in Museum of Comparative Zoology).
The following taxonomic notes are offered by Shattuck (2008):
In this species the pronotal humeral angles are well developed, causing the anterodorsal surface of the pronotum to be nearly vertical, in dorsal view the area between the humeral angles is weakly convex to weakly concave. This is in contrast to the otherwise similar A. prolixus and A. turneri where the humeral angles are weakly developed and the anterodorsal section of the pronotum is gradually sloping, the area between the humeral angles being moderately convex. In addition, A. orientalis can be separated from A. prolixus by the shorter scapes (SI 65–82 vs. 89–96) and from A. turneri by the yellow head and legs which contrast with the yellow-red mesosoma (the body is essentially uniform in colour in A. turneri).
Type Material
- Eciton (Aenictus) ceylonicus orientalis Karavaiev, 1926: Syntype, 3 workers, Wammar, Aru, Indonesia, Karawajew, ANIC32-017906, Australian National Insect Collection.
- Eciton (Aenictus) ceylonicus orientalis Karavaiev, 1926: Syntype, 2 workers (one damaged, one missing), Wammar, Aru, Indonesia, Museum of Comparative Zoology.
Description
References
- Radchenko, A.G., Fisher, B.L., Esteves, F.A., Martynova, E.V., Bazhenova, T.N., Lasarenko, S.N. 2023. Ant type specimens (Hymenoptera, Formicidae) in the collection of Volodymyr Opanasovych Karawajew. Communication 1. Dorylinae, Poneromorpha and Pseudomyrmecinae. Zootaxa, 5244(1), 1–32 (doi:10.11646/zootaxa.5244.1.1).
- Shattuck, S.O. (2008) Review of the ant genus Aenictus (Hymenoptera: Formicidae) in Australia with notes on A. ceylonicus (Mayr). Zootaxa 1926, 1–19.
References based on Global Ant Biodiversity Informatics
- Borowiec M. L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1–280.
- CSIRO Collection
- Esteves F. A., C. R. F. Brandao, and L. P. Prado. 2011. The type specimens of Dorylomorph ants (Hymenoptera, Formicidae: Aenictinae, Ecitoninae, Cerapachyinae, Leptanilloidinae) deposited in the Museu de Zoologia da Universidade de Sao Paulo, Brazil. Papeis Avulsos de Zoologia 51(22): 341-397.
- Janda M., G. D. Alpert, M. L. Borowiec, E. P. Economo, P. Klimes, E. Sarnat, and S. O. Shattuck. 2011. Cheklist of ants described and recorded from New Guinea and associated islands. Available on http://www.newguineants.org/. Accessed on 24th Feb. 2011.
- Karavaiev V. 1926. Ameisen aus dem Indo-Australischen Gebiet. Treubia 8: 413-445.
- Shattuck, S. O. 2008. Review of the ant genus Aenictus (Hymenoptera: Formicidae) in Australia with notes on A. ceylonicus (Mayr). Zootaxa 1926:1-19.