Camponotus parabarbatus

Known from type specimens collected by hand in the foothills of Indian Himalaya.

Identification
Black body, antenna and leg reddish brown; trochanters yellow brown; head with dense, short setae on gena and ventral surface. Camponotus parabarbatus resembles to the Camponotus barbatus distributed in Southeast Asia (Bolton et al. 2007) but can be easily distinguished from the latter. The head of the major worker of C. parabarbatus is subtriangular with a shallowly concave posterior margin, the eyes well within the lateral cephalic margins, and the scape barely touches the posterior margin of head, while in C. barbatus majors the head is subrectangular with gently convex posterior margin, eyes almost touching the lateral cephalic margins, scape surpasses the posterior margin of head by about 0.25 of its length. In C. parabarbatus minor workers, the scape surpasses the posterior margin of head by about 0.33 of its length, whilst in C. barbatus the scape does so by half its length. Additionally, C. parabarbatus is uniformly jet-black whereas C. barbatus is red brown in color. (Bharti and Wachkoo 2014)

Distribution
This species seems to be rare in the Shivalik range of Northwest Himalaya.

Distribution based on Regional Taxon Lists
Oriental Region: India.

Habitat
Collected from both forested and non-forested areas. Most workers were collected from vegetation while gynes and some workers were found under a large stone.

Castes
Males have not been collected.

Nomenclature

 *  parabarbatus. Camponotus parabarbatus Bharti & Wachkoo, 2014: 3, figs. 1-2 (w.q.) INDIA.

Worker
measurements: TL: 5.10–6.85, HL: 1.23–1.98, HW: 0.92–1.70, EL: 0.32–0.41, SL: 1.15–1.39, ML: 1.87–2.38, PW: 0.77–1.15, PL: 0.19–0.23, mTbL: 1.00–1.06, hTbL: 1.36–1.44, GL 1.80-2.28 (n = 11).

Head: Head subtriangular, longer than wide in major worker (HW/HL = 0.86, n = 1), with arched margins laterally, posterior margin shallowly concave (Fig. 1a), distinctly elongate in minor worker (HW/HL = 0.75–0.77, n = 10), subrectangular with subparallel lateral margins and convex posterior margin; frontal carinae sinuous; clypeus in full-face view with anterior margin projected beyond anterior margin of gena; anterolateral corner of clypeus forming right angle, carinate in major worker, in minor worker clypeus relatively less carinate, with anterior margin only slightly extending beyond anterior margin of gena, anterolateral corner broadly rounded; scape short (SL/HW = 0.68), fails to reach occipital margin in major worker, distinctly elongate in minor worker (SL/ HW = 1.18–1.44) surpassing posterior margin by about 0.33 of its length; mandible with six teeth in minor and seven in major with seventh tooth reduced. Mesosoma: Mesosomal outline in lateral view smoothly arched; propodeal dorsum forming obtuse angle with declivity; propodeum compressed laterally; propodeal spiracle round; tibia tubular.

Petiole: petiolar scale broad, dorsally convex.

Sculpture: Head microreticulate, reticulation coarser on gena; mesosoma finely reticulate, gastral reticulations even feebler, appearing gently transversally striate. Mandible and scape with scattered punctures. Entire body shiny. Vestiture: Pilosity yellowish; head, mesosoma, and all gaster segments with dense, erect, long setae; gena, entire ventral surface of head and mandible with dense shorter erect and suberect setae; scape with short, subapressed hairs; hindtibia without row of spiny bristles on ventral margin in addition to 3–4 suberect setae at distal end near spurs; body covered with very short, appressed, white pubescence, more distinct on head and gaster.

Color: Body black, regardless of size: antenna and leg reddish brown; trochanters yellow brown.

Queen
Gyne measurements: TL: 9.06–9.25, HL: 1.97–2.00, HW: 1.48–1.55, EL: 0.51–0.56, SL: 1.26–1.27, ML: 2.74–2.94, PL: 0.23–0.28, mTbL: 1.12–1.14, hTbL: 1.53–1.54; GL 4.03-4.12 (n = 3).

As in major worker, with modifications expected for caste and the following differences: head more elongate, sides relatively straight, occipital margin convex; mandible, clypeus and gena brownish. Head narrower than in conspecific major workers; mandible 7 toothed; scape barely reaches the posterior margin of head. Reticulate sculpture more pronounced on head; scutum with scattered wide, shallow punctures. Propodeum dorsum forms right angle with declivity.

Type Material
Holotype: India. Himachal Pradesh, Rewalsar 1360 m, 31.6345°N 76.8343°E. 1worker. Aijaz A. Wachkoo Paratypes: same as holotype: 2 workers, 3 gynes; India. Uttarakhand 640 m, 30.3416°N 77.9903°E. 6 workers. Aijaz A. Wachkoo (Forest Research Institute); India. Uttarakhand, Rajaji Forest Area 660 m, 30.2483°N 77.9878°E. 8 workers. Aijaz A. Wachkoo

Etymology
The species epithet parabarbatus is a compound word meaning “similar to barbatus”.

References based on Global Ant Biodiversity Informatics

 * Bharti H., and A. A. Wachkoo. 2014. A new carpenter ant, Camponotus parabarbatus (Hymenoptera: Formicidae) from India. Biodiversity Data Journal 2: e996