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Crematogaster sikkimensis
| Crematogaster sikkimensis | |
|---|---|
| |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Crematogastrini |
| Genus: | Crematogaster |
| Species group: | ranavalonae |
| Species: | C. sikkimensis |
| Binomial name | |
| Crematogaster sikkimensis Forel, 1904
| |
This species is only known from the type locality in India.
Identification
A member of the Crematogaster ranavalonae-group.
Hosoishi (2015) - This species is similar to Crematogaster daisyi and Crematogaster dalyi, but differs from C. daisyi in having the spiracles on the petiole located on the middle position in lateral view, and from C. dalyi in having long propodeal spines.
Keys including this Species
Distribution
Distribution based on Regional Taxon Lists
Oriental Region: India (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. |
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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
- The following images are provided by AntWeb
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- sikkimensis. Crematogaster (Oxygyne) dalyi var. sikkimensis Forel, 1904c: 24 (w.) INDIA (Sikkim).
- Type-material: lectotype worker (by designation of Hosoishi, 2015: 86), 3 paralectotype workers.
- Type-locality: lectotype India: Sikkim (F. Möller); paralectotypes with same data.
- Type-depository: MHNG.
- Subspecies of dalyi: Emery, 1922e: 157; Menozzi, 1939a: 300 (in key); Bolton, 1995b: 162.
- Status as species: Hosoishi, 2015: 86 (redescription); Bharti, Guénard, et al. 2016: 37.
- Distribution: India.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Hosoishi (2015) - (type workers, n = 4). HW 0.82-0.91; HL 0.80-0.88; CI 102-103; SL 0.72-0.78; SI 83-89; EL 0.17-0.19; PW 0.50-0.56; WL 0.92-1.07; PSL 0.14-0.17; PtL 0.25-0.26; PtW 0.27-0.30; PtH 0.14-0.17; PpL 0.14-0.17; PpW 0.33-0.36; PtHI 60-65; PtWI 108-116; PpWI 212-236; WI 120-130.
Head appearing subquadratic in front view. Mandible weakly striate, with four teeth, apical and subapincal teeth large, basal two teeth smaller. Scape exceeding posterior corner of head, with appressed setae, each of which is as long as width of scape in length. Compound eye large and slightly projecting beyond lateral margin of head in full face view.
Ventrolateral katepisternal ridge appearing indistinct posteriorly. Propodeal spine long and slender; length longer than spiracle, directed upward; dorsum higher than anterior propodeum. Propodeal spiracle large, situated close to propodeal declivity in lateral view, directed laterally.
In dorsal view, shape of petiole scoop with convex side, as long as broad. Petiolar spiracle big, as wide as half of propodeal spiracle in diameter. In dorsal view, postpetiole broader than long, strongly bilobed laterally, but without longitudinal median sulcus. Postpetiole wider than petiole in dorsal view.
Integument essentially smooth and shiny. Clypeus smooth and shiny without rugulae. Malar region with feable rugulae. Dorsal surface of promesonotum smooth and shiny. Lateral surface of pronotum smooth and shiny. Mesopleuron and lateral propodeum generally shiny, but with longitudinal rugulae. Dorsal surface of propodeum smooth and shiny.
Erect pilosity almost absent. Dorsum of head, clypeus and mesosoma with short and appressed sparse setae. Clypeus with one pair of longer setae on anteriormost portion, directed medially. Anterior clypeal margin with two pairs of longer setae, mixed with some shorter setae on side. No erect setae on pronotal shoulder. Posterolateral tubercle with some decumbent to appressed shorter setae. Ventral surface of petiole with appressed setae. Postpetiole with some shorter setae posteriorly. Fourth abdominal tergite with appressed setae.
Body color brown.
Type Material
- Lectotype (designated by Hosoishi, 2015: 86), worker, Sikkim, India, Möller, Musee d'Histoire Naturelle Genève.
- Paralectotype (designated by Hosoishi, 2015: 86), 3 workers, Sikkim, India, Möller, Musee d'Histoire Naturelle Genève.
References
- Akbar, S.A., Bharti, H., Wachkoo, A.A. 2023. Crematogaster bonnieae (Hymenoptera, Formicidae), a new acrobat-ant species from the Western Ghats, India. Annales Zoologici Fennici 60, 9-17 (doi:10.5735/086.060.0103).
- Forel, A. 1904d. Miscellanea myrmécologiques. Rev. Suisse Zool. 12: 1-52 (page 24, worker described)
- Hosoishi, S. 2015. Revision of the Crematogaster ranavalonae-group in Asia, with description of two new species (Hymenoptera, Formicidae). Journal of Hymenoptera Research 42, 63-92.