Nesomyrmex striatus
Nesomyrmex striatus | |
---|---|
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. |
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. |
Biology
Castes
Worker
Images from AntWeb
Holotype of Nesomyrmex striatus. Worker. Specimen code casent0393121. Photographer Michele Esposito, uploaded by California Academy of Sciences. | Owned by CAS, San Francisco, CA, USA. |
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.