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Species: Nesomyrmex angulatus   (Mayr, 1862) 

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Nesomyrmex angulatus lybica

Taxonomic History (provided by Barry Bolton, 2018)

1 subspecies

Leptothorax angulatus Mayr, 1862 PDF: 739 (w.) EGYPT. Palearctic. AntCat AntWiki HOL

Taxonomic history

Santschi, 1914b: 107 (q.).
Combination in Nesomyrmex (Goniothorax): Emery, 1896g PDF: 58 (footnote); in Nesomyrmex: Bolton, 2003 PDF: 272.
Senior synonym of CANNOT FIND NAME WITH ID 154508 , CANNOT FIND NAME WITH ID 154509 , Nesomyrmex latinodis: Bolton, 1982 PDF: 324.
Current subspecies: nominal plus Nesomyrmex angulatus lybica.


Afrotropical Region: Africa, Botswana, Cabo Delgado, Djibouti, Eastern Africa, Eritrea, Ethiopia, Ghana, Kenya, Kédougou, Laikipia, Limpopo, Lindi, Malawi, Mozambique, Niger, Nigeria, Senegal, Sofala, South Africa, Southern Africa, Sudan, Tanzania, Uganda, Western Africa, Zambézia, Zimbabwe
Indomalaya Region: Asia
Malagasy Region: Anjouan, Antsiranana, Comoros, Madagascar, Mahajanga, Mayotte, Mohéli
Palearctic Region: Algeria, Egypt, Israel, Libya, Northern Africa, Oman, Saudi Arabia, Tunisia, Western Asia, Yemen

Distribution Notes:

Reference for Kenya if not type: Bolton 1982


Caste of types: (w)

Taxonomic Treatment (provided by Plazi)

Treatment Citation: Mbanyana, N. & Robertson, H. G., 2008, Review of the ant genus Nesomyrmex (Hymenoptera: Formicidae: Myrmicinae) in southern Africa., African Natural History 4, pp. 35-55

Nesomyrmex angulatusHNS (Mayr, 1862) Leptothorax angulatus MayrHNS, 1862: 739. For type information and synonyms see Bolton (1982). There is some debate on the web ( nesomyrmex_ angulatusHNS /nesomyrmex_ angulatusHNS.htm - accessed 9 September 2008) over the validity of some of the synonyms but there is no attempt to resolve this here.

Fig. 1a -c

Description of worker

HL 0.672-0.811, HW 0.565-0.692, HW1 0.610-0.736, CI 78-87, SL 0.487-0.613, SI 84-92, PW 0.423-0.541, ML 0.785-1.087, EL 0.169-0.197, EI 28-30 (5 of 81 measured).

Description matches that of Bolton (1982) except for few additional characters. Sculpture on the dorsum of head is not only reticulate-punctulate but also with longitudinal striations, which are well defined near the inner margin of the eyes.


Nesomyrmex angulatusHNS is easily distinguished from other species in the angulatusHNS species-group by the mesosoma, which forms a single, uninterrupted flat surface without any trace of metanotal groove; in the other species, the promesonotum is separated from propodeum by metanotal groove or impression.


Nests in cavities of dead wood on trees in savanna habitats.

Material examined South Africa: KwaZulu-Natal: St Lucia, 05 August 1945, J.C. Faure, SAM-HYM-C004716; Mkuzi [= Mkuze], 16 May 1946, J.C. Faure, SAM-HYM-C004717; Mkuze Game Reserve, Mantuma Rest Camp, 27°36'S 32°13'E, collected from the nest, 26 February 1988, H.G. Robertson, SAM-HYM-C001007; 4.5 km SW of Golela, 27°20'03"S 31°50'09"E, 20 November 1996, Acacia niloticaHNS, F. Grobbelaar & I.M. Millar, SAM-HYM-C010657; Sordwana, 27°33'S 32°40'E, 20 May 1946, A.R.I., SAM-HYM-C011707; Pongola, [27°23'S 31°37'E], 13 July 1967, Dr Karney, SAM-HYM-C015108; Limpopo: Lapellala [= Lapalala], [23°53'S 20°28'E], ex foragers, M. Villet, SAM-HYM-C 000541; Letaba estate, 23° 51'S 30°18'E, Collected ex nest, 09 February 1988, H.G. Robertson, SAM-HYM-C000937; Nylsvley, 24°40'S 28°43'E, ex foragers, 16 April 1987, H.G. Robertson,SAM-HYM-C000481.Zimbabwe: Khami River, 30 November 1913, G. Arnold, SAM-HYM-C004711; Sawmills , 31 October 1919, SAM-HYM-C004712; Victoria Falls, December 1938, Nat. Museum S. Rhodesia [= National Museum of Southern Rhodesia], SAM-HYM-C004715; Melsetter, 03 October 1950, Nat. Museum S. Rhodesia [= National Museum of Southern Rhodesia], SAM-HYM-C 004718; Zambesi valley,7 kmSEofAngwa Bridge, 16°08'S 30°15'E, 18 June -09 September 1988, J. Weyrich, SAM-HYM-C005668; Kenya: Segera Ranch, Laikipia Plateau , 0°15'N 36°50'E, 25 February 1994, collected in Acacia woodland on black cotton soils, J. Pruetz, SAM-HYM-C 017849; Tanzania: Mkomazi Game Reserve, Pangaro, 3°54'37"S 37°47'05"E, 09 December 1995, Foragers on dead wood of Acacia tree. Open woodland, H.G. Robertson, SAM-HYM-C008655.

Specimen Habitat Summary

Found most commonly in these habitats: 6 times found in miombo woodland, 6 times found in dry forest, 4 times found in coastal thicket, 6 times found in coastal scrub, 7 times found in mangrove, coastal scrub, 3 times found in forest on inselberg, 3 times found in coastal dry forest scrub, 1 times found in beach dune veg., 1 times found in Acacia Woodland, 1 times found in mangrove, ...

Found most commonly in these microhabitats: 12 times ex dead twig above ground, 22 times on low vegetation, 2 times ex dead bamboo, 1 times UV Black light, 1 times nest in dead stem, 2 times ground forager(s), 1 times Ex dead limb stub of Acacia etbaica, 1 times ex dead branch above ground, 1 times ex dead twig, 1 times beating low vegetation, 1 times arboreal foragers, ...

Collected most commonly using these methods: 2 times beating low vegetation, 2 times search, 1 times beating Acacia, 1 times Hand, 1 times hand collected, 1 times Pitfall trap.

Elevations: collected from 1 - 1892 meters, 174 meters average

Type specimens: Holotype of Leptothorax latinodis: casent0914925; Lectotype of Leptothorax angulatus: casent0914922; syntype of Leptothorax angulatus concolor: casent0912893; syntype of Leptothorax angulatus ilgii: casent0908991

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