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Camponotus andrianjaka
| Camponotus andrianjaka | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Formicinae |
| Tribe: | Camponotini |
| Genus: | Camponotus |
| Subgenus: | Mayria |
| Species group: | ellioti |
| Species: | C. andrianjaka |
| Binomial name | |
| Camponotus andrianjaka Rasoamanana & Fisher, 2022
| |
Camponotus andrianjaka is a very distinctive species that appears endemic to Bismarckia woodland, shrubland, Uapaca woodland, and savannah woodland in the southern part of Madagascar. It can be found also on eucalyptus plantations and grassland. Altitude: 1300–1987 m.
Identification
Rasoamanana and Fisher (2022) - A member of the Camponotus ellioti species group. Camponotus andrianjaka can be easily distinguished from other species of the ellioti group by the following character set: body bicolored, head and mesosoma reddish brown, gaster dark brown to black; anterior clypeal margin rounded, not produced; propodeum dorsum slightly concave at the level of metanotal suture; petiole nodiform and surmounted with standing, whitish hairs on its posterior margin.
At first sight, Camponotus andrianjaka may be confused with another new species, Camponotus MG132, subgenus Myrmonesites, but can be separated easily with mesonotum that is gradually rounded in dorsal view; petiole higher than long, its dorsolateral margin surmounted with white hairs; presence of ground pubescence; and gaster all black. In addition, C. MG132 has been collected from rainforest and montane rainforest and absent from woodland.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -20.5° to -22.6°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: Rasoamanana & Fisher, 2022
Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar (type locality).
Distribution based on AntMaps
Distribution based on AntWeb specimens
Check data from AntWeb
Biology
Castes
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- andrianjaka. Camponotus andrianjaka Rasoamanana & Fisher, 2022: 204, figs. 8D, 39B, 61A-C, 62 (s.w.) MADAGASCAR.
- Type-material: holotype worker, 1 paratype worker.
- Type-locality: holotype Madagascar: Fianarantsoa, Isalo III Nat. Parc, 12.02 km. SW Ranohira, -22.6158, 45.31084, 870 m., 15-24.ii.2010, ARA0306 (no collector’s name); paratype with same data.
- Type-depository: CASC.
- Combination in C. (Mayria): Rasoamanana & Fisher, 2022: 204.
- Distribution: Madagascar.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Morphological measurements: see Appendix 1 and Ratios of morphometric data for majors and minors
Minor
Medium-sized species. Absolute cephalic size (CS: 0.84±0.07; 0.81–0.88). In full-face view, head subovate, usually somewhat longer than broad, posterior cephalic margin roundly convex; lateral margin of head straight and tapering to front (CWb/CL: 0.31±0.01, 0.30–0.32). Eyes subelliptical, protruding, its border smoothly aligned to lateral margins of head (PoOC/CL: 0.08±0.01, 0.08–0.09). Mandibles triangular with six teeth. Clypeus carinate, anterior clypeal margin with rounded triangular projection (ClyL/GPD: 0.24±0.01, 0.23–0.25). Antennal scape long, surpassing the occiput by the length of two basal funiculi (SL/CS: 0.36±0.04, 0.35–0.38). In lateral view, mesosoma without anterolateral margination, promesonotum convex, mesopropodeal suture shallowly impressed, propodeum rather angulate with slightly concave basal and declivitous surface (MW/ML: 0.19±0.02, 0.18–0.21, MPH/ML: 0.15±0.01, 0.14–0.15). In lateral view, petiole nodiform, higher than long, its short anterior face rounding gradually to the convex posterior faces. Head, especially anterior portion, finely reticulate-areolate, gaster and mesosoma finely imbricate. Mandibles finely reticulate-punctate. Hairs whitish, one pair present on vertex, middle of mesonotum, and propodeum dorsum; three to four pairs on each side of lateral corner of propodeum; four pairs transversely arranged on petiolar posteromargin; ground pubescence delicate. Head and mesosoma reddish, legs light brown, basal face of first gastral segment light brown and the remainder of the segment dark brown to black.
Major
Characteristics of minor workers, except: head as long as broad, with rather straight posterior and lateral borders (CS: 1.15±0.05, 1.12–1.20, CWb/CL: 0.84±0.01, 0.84–0.85). Eyes circular, placed dorsally next to lateral borders (PoOC/CL: 0.26±0.03, 0.23–0.27). Anterior clypeal margin forms a rounded rectangular lobe (ClyL/GPD: 0.89±0.05, 0.83–0.92). Antennal scape short, just reaching the occipital border (SL/CS: 0.70±0.02, 0.69–0.72). Mesosoma the same as minor worker.
Type Material
Holotype worker. Madagascar, Province Fianarantsoa, Isalo III National Parc, 12.02 km SW Ranohira, –22.6158, 45.31084, 870 m, Bismarckia woodland, ex soil, 15–24 February 2010 (ARA), collection code: ARA0306, specimen code: CASENT0243690 (CASC). Paratype. one worker with same data as holotype but specimen coded as CASENT0243954 (CASC).
Etymology
This new species is named after the collector Andrianjaka Ravelomanana.