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Nesomyrmex striatus
| Nesomyrmex striatus | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Crematogastrini |
| Genus: | Nesomyrmex |
| Species group: | sikorae |
| Species: | N. striatus |
| Binomial name | |
| Nesomyrmex striatus Csösz & Fisher, 2016
| |
This species is known to occur in montane rainforests between elevations of 900 m and 1125 m (mean: 1054 m) of the southeastern part of Madagascar.
Identification
A member of the sikorai species-group.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -23.83517° to -24.76389°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Malagasy Region: Madagascar (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
Worker
Images from AntWeb
   
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| Holotype of Nesomyrmex striatus. Worker. Specimen code casent0393121. Photographer Michele Esposito, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
   
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| Worker. Specimen code casent0447218. Photographer Erin Prado, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- striatus. Nesomyrmex striatus Csösz & Fisher, 2016b: 25, figs. 3, 15A-C (w.m.) MADAGASCAR.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Body color: black. Body color pattern: concolorous. Absolute cephalic size: 842 μm [775, 889]. Cephalic length vs. Maximum width of head capsule (CL/CWb): 1.155 [1.117, 1.192]. Postocular distance vs. cephalic length (PoOc/CL): 0.460 [0.441, 0.472]. Postocular sides of cranium contour, anterior view orientation: converging posteriorly. Postocular sides of cranium contour, anterior view shape: convex. Vertex contour line in anterior view shape: straight to feebly convex. Vertex sculpture: main sculpture parallel costate, ground sculpture smooth. Gena contour line in anterior view shape: convex. Gena contour from anterior view orientation: strongly converging. Gena sculpture: rugoso-reticulate with feeble areolate ground sculpture. Concentric carinae laterally surrounding antennal foramen: present. Eye length vs. absolute cephalic size (EL/CS): 0.219 [0.209, 0.232]. Frontal carina distance vs. absolute cephalic size (FRS/CS): 0.288 [0.282, 0.294]. Longitudinal carinae on median region of frons: present. Smooth median region on frons: present. Antennomere count: 12. Scape length vs. absolute cephalic size (SL/CS): 0.794 [0.779, 0.813]. Median clypeal notch count: present. Median carina of clypeus: absent. Spine length vs. absolute cephalic size (SPST/CS): 0.241 [0.219, 0.26]. Minimum spine distance vs. absolute cephalic size (SPBA/CS): 0.242 [0.204, 0.26]. Apical spine distance vs. absolute cephalic size (SPTI/CS): 0.244 [0.191, 0.266]. Propodeal spine shape: curving upward. Apical distance of pronotal spines vs. absolute cephalic size (PSTI/CS): 0.666 [0.649, 0.686]. Metanotal depression: present. Dorsal region of mesosoma sculpture: costate with smooth ground sculpture. Lateral region of pronotum sculpture: areolate ground sculpture, main sculpture areolate. Mesopleuron sculpture: smooth ground sculpture, superimposed by dispersed rugulae. Metapleuron sculpture: fine areolate ground sculpture, superimposed by coarse rugae. Petiole width vs. absolute cephalic size (PEW/CS): 0.243 [0.229, 0.253]. Dorsal region of petiole sculpture: ground sculpture smooth, main sculpture absent. Postpetiole width vs. absolute cephalic size (PPW/CS): 0.362 [0.351, 0.373]. Dorsal region of postpetiole sculpture: ground sculpture smooth, main sculpture absent.
Type Material
Holotype worker: Madagascar: Prov. Toliara, Anosy Region, Anosyenne Mts., 31.2 km NW Manantenina, 1125 m, -24.13894 N, 47.06804 E, 26. ii.2015, collection code: BLF36533; CASENT0393121, Fisher et al. (California Academy of Sciences, CASENT0393121); Paratypes: 5 workers and a male with the same label data (CAS).
Etymology
The name refers to the coarse, striate/costate surface sculpturing on the head and mesosoma.