Aenictus levior

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Aenictus levior
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Dorylinae
Genus: Aenictus
Species: A. levior
Binomial name
Aenictus levior
(Karavaiev, 1926)

Aenictus levior casent0249264 p 1 high.jpg

Aenictus levior casent0249264 d 1 high.jpg

Specimen Labels

Heterick & Kitching (2022) collected this species in a pitfall trap within a lowland dipterocarp forest in Brunei.


A member of the pachycerus group.

Keys including this Species


Distribution based on Regional Taxon Lists

Indo-Australian Region: Borneo, Brunei Darussalam, Indonesia (type locality), Malaysia.

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.


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.




Known only from the worker caste.


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

  • levior. Eciton (Aenictus) impressus var. levior Karavaiev, 1926d: 424 (w.) INDONESIA (Buru I.).
    • Type-material: syntype workers (number not stated, “several”).
    • Type-locality: Indonesia: Buru, Tifu, no. 2741 (W. Karawajew).
    • Type-depository: SIZK.
    • As unavailable (infrasubspecific) name: Karavaiev, 1927e: 6; Chapman & Capco, 1951: 11.
    • Subspecies of impressus: Chapman & Capco, 1951: 13.
    • Junior synonym of aratus: Wilson, 1964a: 446; Bolton, 1995b: 60.
    • Status as species: Shattuck, 2008c: 17; Pfeiffer, et al. 2011: 32; Jaitrong & Wiwatwitaya, 2013: 99 (in key).
    • Distribution: Brunei, Indonesia (Buru), Malaysia (Peninsula, Sabah, Sarawak).

Worker syntypes from Buru Island, Indonesia.

The following taxonomic notes are provided by Shattuck (2008):

Aenictus material from Indonesia is uncommon in collections and drawing conclusions on the species involved is difficult. However, it would appear that A. levior is a valid species and not a junior synonym of A. aratus as suggested earlier. Morphologically this species has a head shape similar to A. aitkenii (relatively broad) but the scape is shorter. However, this analysis is based on limited material and should be considered tentative until additional specimens become available. Material referable to this species has been examined from Sumatra, Indonesia, peninsular Malaysia and Sarawak, Malaysia.



References based on Global Ant Biodiversity Informatics

  • Borowiec M. L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1–280.
  • Jaitron W., and D. Wiwatwitaya. 2013. Two new species of the Aenictus pachycerus species group (Hymenoptera: Formicidae: Aenictinae) from southeast Asia. The Raffles Bulletin of Zoology 61(1): 97-102.
  • Karavaiev V. 1926. Ameisen aus dem Indo-Australischen Gebiet. Treubia 8: 413-445.
  • Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58
  • Shattuck, S. O. 2008. Review of the ant genus Aenictus (Hymenoptera: Formicidae) in Australia with notes on A. ceylonicus (Mayr). Zootaxa 1926:1-19.