The Ants of Africa
Genus Odontomachus
Odontomachus assiniensis Emery

Odontomachus assiniensis Emery

return to key {link to the Hymenoptera Name Server} Type location Ivory Coast (Odontomachus assiniensis n. sp., Emery, 1892d: 558, worker; Santschi, 1910c: 350, queen; Forel, 1913e: 666, queen & male; Santschi, 1914b: 57, male) collected at Assinie by Ch. Alluaud, vii-viii.1886
junior synonyms (Brown, 1976a: 102, Bolton 1995)
aterrimus (Odontomachus assiniensis variety aterrimus n. variety, Wheeler, 1922: 102, worker) from Zaïre, Niapu - see
fauconneti (Odontomachus assiniensis Em. subsp. Fauconneti n. subsp., Forel, 1910a: 27, worker) from Zaïre, Bakai - see
furvior (Odontomachus assiniensis variety furvior n. variety, Wheeler, 1922: 101, worker & queen) from Zaïre, Faradje - see
fuscus (Odontomachus assiniensis Em. v. fuscus n. v., Stitz, 1916: 372, worker & queen) from Zaïre, Duma, Ubangi - no images on Antweb (June 2014)
caffrorum (Odontomachus assiniensis Em. stirps caffrorum n. st., Santschi, 1914e: 14, worker) from South Africa, Zululand, Dukudu, ix.1905 - no images on Antweb (June 2014)
flavescens (Bernard, 1952: 215, worker & queen) from Guinea, Mt. Nimba - see
intermedius (Odontomachus intermedius n. sp., Stitz, 1911b: 378, worker) from Tanzania, N W Bukoba - no images on Antweb (June 2014)
tropicalis (Odontomachus assiniensis var. tropicalis n. v., Menozzi, 1922a: 353, all forms) from Principé Is - no images on Antweb (June 2014)
plus the unavailable and unnecessary name oblita (for fuscus Baroni Urbani, 1971b: 360)
all forms known .

{short description of image}Emery's (1892d) description is at {original description}. Santschi's (1910c) descriptions of the queen is at {original description}. Forel's (1913e) descriptions of the male and queen are at {original description}. Forel's (1910a) description of fauconneti is at {original description}. Stitz's (1911b) description of intermedius is at {original description}. Santschi's (1914e) description of the male is at {original description}. Santschi's (1914e) description of caffrorum is at {original description}. Stitz's (1916) description of fuscus is at {original description}. Menozzi's (1922a) description of tropicalis is at {original description}. Wheeler's (1922: 101, 102) commentary, with descriptions of furvior and aterrimus, is at {original description}. Arnold (1926: 218) provided an illustrated translation of caffrorum, plus a commentary on the differences from troglodytes; this is at {original description}. Brown's revision (1976a: 128) is at {original description}.

{Odontomachus assiniens flavescens} Emery (1899e: 476) noted that his original description of a single specimen from Assinie, Ivory Coast (1892d), was of a medium size worker with a reddish head. On receipt of several specimens from Cameroun, collected by L Conradt, Emery found a TL range from 11.0-14.0 mm; head size range HL 3.0 HW 2.1 to HL 3.6 HW 2.8 mm.

WORKER - no size given by Brown (1976a) but "averages larger in size" (than troglodytes) [Emery (1899e) gave TL 11.0-14.0 mm], with a higher, more compressed petiolar node. Also differentiated by 4-segmented labial palps. Colour variable from all over brown, most commonly with yellow legs; Ghana forest zone individuals often with a red head and yellow legs.

Widespread in warmer parts of sub-Saharan Africa. Wheeler (1922) listed findings from Ghana (Aburi, F. Silvestri), Togo (Bismarckburg, Conradt, Büttner; Misahöhe, Baumann), Cameroun (Bartsch at ?; Molundu by Schultze; Mundame, L. Conradt; Soppo, von Rothkirch), and several other sub-Saharan records.

Bernard (1952) described it as less common and more localised than "haematodus" (troglodytes), more often found in the forests of Congo westwards than in eastern Africa (where it was conspicuous in the mountains of Kenya and Mozambique). The Guinea form, which was very abundant in Lamotte's collections, was notable for its yellow head (other forms being red-brown), entirely yellow tarsi (others with brown femurs), and, the propodeum partly black and shiny (others brown-red and dull). Otherwise the Nimba forms differed little from the Ivory Coast type, although the thorax was more shiny and the petiole spine straighter and sharper. The combination led to his designation of the subspecies flavescens (illustrated scan of photocopy of photo). This seems to be a form of higher levels, with the yellow colour being constant across the massif. Findings were from Kéoulenta, type worker and 2 other, plus 1 queen. Numerous cotype workers were collected from Yalanzou; Nion; Camp IV, 1000 m; Zouépo, grassland at 1050 m; Nion crest, 1300 m, scrub; Mount Tô, 1600 m.

Ledoux (1952) reported preliminary research on the species, including determining that the major food was termites, although other kinds of small insects found during its surface foraging were taken. The larger prey were stung but smaller insects were killed by a simple mandibular strike.

Reported from Ghana cocoa leaf litter and nesting in dead wood on the ground, also from low scrub, at the Mampong Cemetery farm (Room, 1971). A single collection of eight workers from secondary forest at CRIG (23.xii.1991), was made by Belshaw & Bolton (1994b).

{Odontomachus assiniensis}The photomontage of the type worker is collated from

Oxford University Museum specimens

{Odontomachus assiniensisThe photomontage is of a worker from Congo, Réserve de Lésio-Louna; collector Eric Zassi (04-t-2-1).

{Odontomachus assiniensis}The photomontage is of a worker from the Central African Republic, Dzanga-Sangha NP; Camp 3; 02°50’01.8" N 16°08’13.7" E 375m; 07.ii.2005, U.V : 18h-5h, dans petite saline à proximité du camp; collector Philippe Annoyer.

{Odontomachus assiniensis queen}The photomontage is of a queen from the Central African Republic, Dzanga-Sangha NP; Bayanga-Lidjombo;; 10.30-12.30 h, collector Philippe Annoyer.

{Odontomachus assiniensis furvior} The photomontage is of a cotype of Odontomachus assiniensis furvior from Zaïre. The original photographs, together with enlarged images, are from the MCZ, Harvard University, website at - MCZ link.

{Odontomachus assiniensis} The photomontage is collated from Collection details - South Africa: Natal: north of Richards Bay; 28°40'00"S 032°14'00"E Collection Information Collection codes: SAM-HYM-C002699 Date: 26 Jan-2 Feb 1991 Collected by: Kock, J.D.Majer : Natal: north of Richards Bay; 28°40'00"S 032°14'00"E Collection Information Collection codes: SAM-HYM-C002699 Date: 26 Jan-2 Feb 1991 Collected by: Kock, J.D.Majer .

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