Camponotus yambaru

AntWiki: The Ants --- Online
Camponotus yambaru
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Formicinae
Tribe: Camponotini
Genus: Camponotus
Species: C. yambaru
Binomial name
Camponotus yambaru
Terayama, 1999


Common Name
Usuki-oo-ari
Language: Japanese

This is an arboreal species which nests in dead twigs on trees and bamboos (Japanese Ant Image Database).

Identification

Terayama (1999) - Total length around 3.5 mm in minor workers, and 5 mm in major workers. Body color yellowish brown. In major workers: head somewhat darker than mesosoma and gaster. Propodeal declivity abruptly declivitous; dorsum of pro- and mesonotum each with 2-4 erect hairs; propodeum with about 10 erect hairs; petiolar scale thin, with hairs dorsally.

Keys including this Species

Distribution

Okinawa Island

Distribution based on Regional Taxon Lists

Palaearctic Region: Japan (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

Nomenclature

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

  • yambaru. Camponotus (Myrmamblys) yambaru Terayama, 1999b: 43, figs. 35-41 (s.w.) JAPAN.
    • Status as species: Imai, et al. 2003: 38.

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

Description

Worker

Holotype major: HL 1.43 mm; HW 1.35 mm; 8L 0.90 mm; CI 95; 81 67; WL 1.65 mm; PW 0.93 mm; P8L 0.18 mm; PH 0.68 mm; DPW 0.58 mm; TL 5.5 mm. Head slightly longer than wide, with subparallel sides and weakly convex posterior margin in full face view. Mandible strong, with 6 teeth; basalmost tooth small. Anterior margin of clypeus almost straight, without a median notch. Antennal scape short, just reaching the posterior margin of head. Eye 0.30 mm in maximum diameter. Mesosoma relatively short; pro- and mesonotal dorsum almost straight in profile; dorsum of pronotum flat, 0.57 times as long as wide in dorsal view; propodeal declivity abruptly declivitous. Petiolar scale thin and high, with convex anterodorsal margin and straight posterior margin in profile; scale in dorsal view 0.3 times as long as wide, with weakly convex anterior margin. Dorsum of pro- and mesonotum each with 2-4 erect hairs; propodeum with about 10 erect hairs; petiolar scale with several erect hairs dorsally; gaster with relatively short erect hairs. Body yellowish brown; head somewhat darker than mesosoma and gaster; antenna and legs yellowish brown. Minor worker. HL 0.90 mm; HW 0.90 mm; 8L 0.85 mm; CI 100; 81 94; WL 1.15 mm; PW 0.65 mm; P8L 0.15 mm; PH 0.40 mm; DPW 0.35 mm; TL 3.8 mm (A para type from the same nest as holotype measured). Head round, with convex dorsal margin in full face view; posterodorsal corner rounded, not forming an angle. Mandible with 5 teeth. Anterior margin of clypeus convex. Antennal scape exceeding posterior margin of head by 1/3 its length; Eye 0.20 mm in maximum diameter. Mesosoma short, pro- and mesonotal dorsum flat in profile; propodeal declivity abruptly declivitous. Petiolar scale relatively thin and high. Pronotal dorsum without erect hairs; mesonotal dorsum with a pair of erect hairs; propodeum about 10 erect hairs; petiolar scale with erect hairs dorsally; gastral tergites each with short erect hairs. Body including head yellowish brown; antenna and legs yellowish brown.

Type Material

Holotype. Major worker, Yonaha-dake, Okinawa-jima, Okinawa Pref., 25. VIII. 1991, M. Terayama leg.Museum of Nature and Human Activities. Paratypes. 24 major workers, 40 minor workers, same data as holotype.

References

References based on Global Ant Biodiversity Informatics

  • Terayama M., S. Kubota, and K. Eguchi. 2014. Encyclopedia of Japanese ants. Asakura Shoten: Tokyo, 278 pp.
  • Terayama, M. 1999. The ant genus Camponotus Mayr (Hymenoptera: Formicidae) in Japan. Memoirs of the Myrmecological Society of Japan 1:25-48.
  • Yamane S., S. Ikudome, and M. Terayama. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp. pp, 138-317.
  • Yamane S.; Ikudome, S.; Terayama, M. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp. pp138-317.