The Ants of Africa
Genus Crematogaster
Crematogaster (Crematogaster) senegalensis Roger

Crematogaster (Crematogaster) senegalensis Roger

return to key {link to the Hymenoptera Name Server} Type location Senegal (Cremastogaster senegalensis nov. spec. Roger, 1863a: 206, worker & queen) collector Sichel - no type images on Antweb (August 2016)
junior synonyms (here)
robusta (Cremastogaster robusta n. sp., Emery, 1877b: 379, queen & male; Emery, 1915g: 10, worker) from Eritrea, Keren, Beccari - see below (queen)
devincta (Cremastogaster aegyptiaca Mayr stirps senegalensis Rog. v. devincta n. var., Santschi, 1914d: 343, worker) from Guinea, Conakry by F. Silvestri - see below
targuia (Crematogaster (Acrocoelia) aegyptiaca Mayr stirps senegalensis Rog. v. targuia n.v., Santschi, 1929e: 148, worker) from Algeria, Sahara, Lagouhat, 8.viii.1919, Dumont - see below.
worker and queen only described (see Bolton, 1995) .

Roger's (1863a) description is at {original description}. Emery's (1877b) description of robusta is at {original description}. Santschi's (1914d) description of devincta is at {original description}. Emery's (1915g) further note on robusta is at {original description}. Forel's (1922) description of goliathula is at {original description}. Santschi's (1929e) description of targuia is at {original description}. Quite why Santschi (1914d) chose to reduce senegalensis to a subspecies of Crematogaster aegyptiaca from the original recognition by Roger is not clear.

The Antweb images of the robusta queen (see below) appear to support the likelihood of robusta being a synonym of senegalensis.

Note: there is quite considerable variation, particularly in colour, between the workers shown below and a detailed study might lead to separation into two or more species.

Crematogaster (Cr.) goliathula (Crematogaster senegalensis Rog. r. goliathula n. stirps, Forel, 1922: 93, worker) from Angola appears to be a distinct species, with a fresh specimen from Cameroun, of the forest zone (?), with a near flat pronotum, longer more upwardly angled propodeal spines, a distinct anterior ventral tooth on the petiole, etc.

Forel (1891c: 193) gave a description in his report of ants from Madagascar. Forel does not seem to have examined any specimens from there, as he gave no Madagascar locations, simply noting that "M. André had received the species from Madagascar (brownish examples)" - see {original description}. I cannot find any mention among André's publications. There are examples of specimens from the Forel collection shown on Antweb, e.g. from Gambia - see

{Crematogaster senegalensis}Bernard (1950b) gave an illustration of the typical form and an all-brown variety from Aïr (central Niger); later (1952), he noted that it had been known for some 20 years from the sudanese and niger regions, also from Sahara. Monard had since found it in Angola, and the Mt. Nimba, Guinea, specimens, being brownish rather than red, represented a transition between those countries. Mainly found at Zouépo, 1215 m, sites F33 & B8-10; several workers came from Mount Tô (T 225); it reached 1500 m at Aïr (central Niger). He felt that this was one of the rare forms from Nimba which derived from the Sudan massif and not more southern regions.

{Crematogaster senegalensis} Collingwood (1985), reporting it from Saudi Arabia, noted this is a brightly coloured species, head and alitrunk red, gaster brilliant with fine sparse pubescence; with the head wider than long, comparatively long funiculus segments and broad, strong, sharp, propodeal spines. Workers were taken among tree roots in the immediate vicinity of a clump of trees.

{Crematogaster senegalensis targuia}The photomontage of the targuia type from Algeria is collated from

{Crematogaster senegalensis type}The photomontage of the devincta type from Guinea is collated from

Oxford University Museum specimens

{Crematogaster senegalensis}The photomontage is of a worker from Senegal, Ferlo, collector B Ndiaye. This appears to match the Roger type description.

{Crematogaster senegalensis type form morphs}The photomontage is of a range of workers from Niger, Tondibiah from an Acacia bush, collected by David M King (King 50).

For the individual workers see the type form morphs page.

Crematogaster senegalensisThe photomontage is of a worker from Sudan, collected by J Mathews, by pyrethrum fogging of Acacia senegal;  Kordofan, El Ain, near El Obeid, ca. 2°56' N 30°35' E, JM 059, 22.x.2000, 1 worker. Same location 6 other trees (JM 077, JM 084, JM 085, JM 086, JM 087 (ca 30 workers) and JM 088 (33 workers)

Crematogaster senegalensis workerThe photomontage is of a worker from Benin; from Batcham; 3.ix.2008 ; coll. A Fotso Kuate (fk unmounted 23).

This matches the Santschi determined specimen above.

{Crematogaster robusta queen}Queen The photomontage of the robusta queen is collated from

{Crematogaster senegalensis type}The photomontage of an all brown form worker (major?) (comparing to the Bernard brown form in colour and general shape) is collated from

{Crematogaster senegalensis type}The photomontage of an all brown form specimen (comparing to the Bernard brown form in colour and general shape) is collated from

© 2007, 2008, 2010, 2011, 2013, 2014, 2016, 2017 - Brian Taylor CBiol FRSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.