Camponotus yambaru

This is an arboreal species which nests in dead twigs on trees and bamboos.

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.

Distribution
Okinawa Island

Distribution based on Regional Taxon Lists
Palaearctic Region: Japan.

Nomenclature

 *  yambaru. Camponotus (Myrmamblys) yambaru Terayama, 1999b: 43, figs. 35-41 (s.w.) JAPAN.

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.. Paratypes. 24 major workers, 40 minor workers, same data as holotype.

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.