Aenictus chapmani
Aenictus chapmani | |
---|---|
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Formicidae |
Subfamily: | Dorylinae |
Genus: | Aenictus |
Species: | A. chapmani |
Binomial name | |
Aenictus chapmani Wilson, 1964 |
The type series was obtained from "several scattered files of workers were found crossing a native trail in second-growth forest during the early part of the night."
Identification
A member of the pachycerus group.
Distribution
Known from the Huon Peninsula, NE New Guinea and Duamagete, Philippines.
Latitudinal Distribution Pattern
Latitudinal Range: 4.95° to 4.95°.
North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo, Indonesia, Malaysia, New Guinea (type locality).
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. |
Biology
Castes
Known only from the worker caste.
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- chapmani. Aenictus chapmani Wilson, 1964a: 456, figs. 45, 46 (w.) NEW GUINEA (Papua New Guinea).
- Type-material: holotype worker, paratype workers (number not stated, but >7).
- Type-locality: holotype Papua New Guinea: Huon Peninsula, Mongi Watershed, Zingzingu, 1955 (E.O. Wilson); paratypes with same data.
- Type-depository: MCZC.
- Status as species: Bolton, 1995b: 59; Pfeiffer, et al. 2011: 32.
- Distribution: Papua New Guinea.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Holotype : HW 0.72 mm, HL 0.76 mm, SL 0.70 mm. Antenna 10-segmented. Mandible somewhat narrower with reference to the head than in the "typical" form (e. g., in laeviceps and pachycerus), its maximum width 0.16 mm; indistinctly 3-toothed. In closure the mandibles leave a gap between their posterior margins and the clypeus of about 0.02 mm. Anterior clypeal border very feebly concave, unarmed. Parafrontal ridge 0.10 mm long, in side view prosalient as a narrow, irregular lobe. Occiput almost perfectly straight, lacking a collar. Posterior surface of petiolar node drawn into a low, obtuse angle. Main portion of subpetiolar process large, lobose, anteriorly directed; surmounted by a thin, acute flange which is posteriorly directed. Pilosity abundant; pronotal hairs up to 0.20 mm in length.
Head shining. Mesosoma almost entirely microreticulate (reticular diameter 0.01 mm) and opaque. Microreticulum on mesonotum weakly developed, the surface only subopaque. In addition the meso-, metathorax, and propodeum bear about 25 longitudinal rugae. Pedicel wholly microreticulate and opaque. Head, alitrunk, and pedicel rich medium reddish brown; gaster and appendages a contrasting light reddish brown.
Paratypes: 7 workers from same nest series show little deviation from holotype. HW 0.70-0.77 mm. One paratype chosen at random: HW 0.73 mm, HL 0.76 mm, SL 0.71 mm. Mandibles range from distinctly 3-toothed to distinctly 4-toothed, with intermediate development of the 4th tooth as 1 or 2 denticles between the preapical basal teeth.
Type Material
Zingzingu, 1200 m, Mongi Watershed, Huon Peninsula, NE New Guinea.
Etymology
This species is named for the late Dr J. W. Chapman, in recognition of his pioneering taxonomic and ecological studies of Philippine army ants.
References
- Wilson, E. O. 1964a. The true army ants of the Indo-Australian area (Hymenoptera: Formicidae: Dorylinae). Pac. Insects 6: 427-483 (page 456, figs. 45, 46 worker described)
References based on Global Ant Biodiversity Informatics
- Borowiec M. L. 2016. Generic revision of the ant subfamily Dorylinae (Hymenoptera, Formicidae). ZooKeys 608: 1–280.
- 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.
- Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040729
- Pfeiffer M., and D. Mezger. 2012. Biodiversity Assessment in Incomplete Inventories: Leaf Litter Ant Communities in Several Types of Bornean Rain Forest. PLoS ONE 7(7): e40729. doi:10.1371/journal.pone.0040844
- 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
- Wilson E. O. 1964. The true army ants of the Indo-Australian area (Hymenoptera: Formicidae: Dorylinae). Pacific Insects 6: 427-483.