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Monomorium esharre
| Monomorium esharre | |
|---|---|
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Formicidae |
| Subfamily: | Myrmicinae |
| Tribe: | Solenopsidini |
| Genus: | Monomorium |
| Species: | M. esharre |
| Binomial name | |
| Monomorium esharre Bolton, 1987
| |
Besides the Namibia type collection, the only other specimens are from South Africa. These are noted as being collected from a garden. No other biological information is known about this species.
Identification
Bolton (1987) - A member of the M. mediocre complex in the M. salomonis species group. All six small species in the complex show relatively feeble or very reduced cephalic sculpture and almost non-existent dorsal pilosity. Of the six nirvanum retains a single pair of backward directed hairs on the petiole, which is absent in the remainder. Monomorium rabirium, Monomorium osiridis and Monomorium zulu have eyes which are situated distinctly in front of the midlength of the sides of the head. The two remaining, mediocre and esharre, are separated by the characters noted in the key and under Monomorium mediocre.
Keys including this Species
Distribution
Latitudinal Distribution Pattern
Latitudinal Range: -21.15° to -23.06666667°.
| North Temperate |
North Subtropical |
Tropical | South Subtropical |
South Temperate |
- Source: AntMaps
Distribution based on Regional Taxon Lists
Afrotropical Region: Namibia (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
Nomenclature
The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.
- esharre. Monomorium esharre Bolton, 1987: 343 (w.) NAMIBIA.
- Type-material: holotype worker, 2 paratype workers.
- Type-locality: holotype Namibia: Namib Desert, 23°04’S, 15°36’E, sample P 17,1984, pitfall (A.C. Marsh); paratypes with same data.
- Type-depositories: BMNH (holotype); BMNH, MCZC (paratypes).
- Status as species: Bolton, 1995b: 261.
- Distribution: Namibia.
Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.
Description
Worker
Holotype. TL 1.9, HL 0.52, HW 0.40, CI 77, SL 0.38, SI 95, PW 0.27, AL 0.56. Paratypes. TL 1.9-2.0, HL 0.52-0.54, HW 0.40-0.42, CI 77-78, SL 0.38, SI 90-95, PW 0.26-0.27, AL 0.56 (2 measured). Maximum diameter of eye 0.24-0.25 x HW and with 7 ommatidia in the longest row. Otherwise as holotype.
Median portion of clypeus with anterior margin shallowly convex. Eyes situated slightly in front of midlength of sides; maximum diameter of eye 0.25 x HW and with 7 ommatidia in the longest row. In full-face view the sides of the head weakly convergent behind the eyes and the occipital margin shallowly concave. Promesonotal dorsum evenly feebly convex in profile, the metanotal groove not impressed but the propodeal dorsum on a lower level than that of the mesonotum. Dorsum of head without standing hairs behind the level of the frontal lobes. Dorsal alitrunk without standing hairs. Petiole node without hairs but postpetiole with a single backward directed pair. First gastral tergite with an apical transverse row of hairs but without standing hairs on the tergite in front of this. Cephalic dorsum sculptured with faint superficial reticular patterning only. Pronotal dorsum finely reticulate to reticulate-shagreenate, the mesonotal dorsum similar; propodeal dorsum finely reticulate-punctulate to reticulate-granular. First gastral tergite with superficial reticular patterning only. Head and gaster blackish brown, the alitrunk somewhat lighter brown. Non-paratypic material. As holotype but lighter in colour, medium brown with the gaster darker. The head and alitrunk are approximately the same shade.
Type Material
Holotype worker, Namibia: Namib Desert, 15° 36' E, 23° 04' S, pitfall, sample P 17, 1984 (A. C. Marsh) (The Natural History Museum). Paratypes. 2 workers with same data as holotype (BMNH; Museum of Comparative Zoology).
References
- Bolton, B. 1987. A review of the Solenopsis genus-group and revision of Afrotropical Monomorium Mayr (Hymenoptera: Formicidae). Bulletin of the British Museum (Natural History). Entomology. 54: 263-452.. (page 343, worker described)*Gomez, K., Hawkes, P.G., Fisher, B.L. 2023. Ant endemicity in the highlands and escarpments of Angola and Namibia (Hymenoptera, Formicidae). Monograph on Endemism in the Highlands and Escarpments of Angola and Namibia. Namibian Journal of Environment 8, 197-203.
References based on Global Ant Biodiversity Informatics
- IZIKO South Africa Museum Collection
- Robertson H. G. 2000. Formicidae (Hymenoptera: Vespoidea). Cimbebasia Memoir 9: 371-382.