The Ants of Africa
Genus Crematogaster
Crematogaster (Orthocrema) muralti Forel

Crematogaster (Orthocrema) muralti Forel

return to key {link to the Hymenoptera Name Server} Type location Cameroun (Cremastogaster Muralti, n. sp., Forel, 1910e: 432, worker) L V Muralt
junior synonym (here)
livingstonei (Crematogaster (Orthocrema) Muralti For., stirps Livingstonei, n. sp., Santschi, 1919a: 344, worker) from Zambia, Livingstone, G Arnold - see below
worker only described (see Bolton, 1995) .

NOTE - I have elevated the smaller, dark brown to black form regarded as subspecies ugandensis (Santschi, 1914b: 99, worker) from Uganda, to species status - Crematogaster ugandensis.

{Crematogaster ugandensis livingstonei}Forel's (1910e) description is at {original description}. Santschi's (1919a) description of livingstonei is at {original description}. Arnold (1920a: 536) gave an illustrated translation; this is at {original description}.

Santschi (1935a) also saw workers of muralti from Kasai, Dumbi; Ngombe and Kunungu, Zare; all collected by Dr H Schouteden.

{Crematogaster muralti} The photomontage of the type worker is collated from

{Crematogaster livingstonei} The photomontage of a syntype worker of livingstonei is collated from

{Crematogaster (Orthocrema) muralti}

Crematogaster (Orthocrema) species 1 - Nigeria specimens (Taylor, 1979: 21). WORKER. TL 2.18 mm, HL 0.61, HW 0.59, SL 0.39, PW 0.34
Colour dark orange, very dark on the gaster. Moderately abundant pilosity. Erect hairs clavate, this is especially noticeable on the pedicel. Alitrunk profile a nearly continuous convex curve, with only a slight depression at the metanotal groove. The propodeal spines are short, triangular, upturned denticles. The subpetiolar spine is moderately long and triangular.

The presence of a subpetiolar spine confounds the key of Bolton (unpublished, 1969) to CRIN species; the clavate hairs, however, seem unique.

Nests under bark, in dead branch ends and in mummified pods. In Nigeria, it was not infrequently found on cocoa, on up to 1% of trees, often in association with Oecophylla longinoda, and foraging over a surprisingly wide area of canopy (Taylor, 1977). It constructs discrete tents of vegetable debris over Pseudococcids at the pod-stalk junction, the tents have been found to be sources of cocoa black pod disease. Also found on native shrubs and trees, and on kola.

Possibly the same (unnamed) species was mentioned by Strickland (1951a) from Ghana and Togo. He described it as being rare and of minor importance, but it was found also on several other shrubs and trees.

Oxford University Museum specimens

Crematogaster (Orthocrema) muralti
B Taylor det.
Ivory Coast
Erena Dupont
Ta National Park
5˚45'00" N
7˚07'00" W
Crematogaster (Orthocrema) muralti
B Taylor det.

Central African Republic
P Annoyer
0255’04.8" N
1610’09.7" E
U.V : 21h-6h30
38m du sol dans un Ayous (Triplochiton scleroxylon, Sterculariaceae); 450 m asl


{Crematogaster muralti}The photomontage is of a worker from Ivory Coast, Dzanga-Sangha NP; Camp 6; collector Erena Dupont.

{Crematogaster muralti}The photomontage is of a worker from the Central African Republic, Dzanga-Sangha NP; Camp 6; collector Philippe Annoyer (CAR GN).

2007, 2008, 2009, 2012, 2015, 2016 - Brian Taylor CBiol FRSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.