The Ants of Africa
Genus Myrmicaria
Myrmicaria baumi Forel

Myrmicaria baumi Forel

return to key {link to the Hymenoptera Name Server} Type location Angola (Myrmicaria Baumi n. sp., Forel, 1901d: 307, worker) from Cubango-Cuito - see below
worker only described (see Bolton, 1995) .

I have revived the status of Myrmicaria occidentalis Santschi which is smaller and readily separable from baumi.

{Myrmicaria baumi}Forel's (1901d) description is at {original description}. Arnold (1916: 388) gave a translation, this is at {original description}.

{Myrmicaria baumi}Santschi's (1925) description follows (comparative statements mostly relate to natalensis) -
WORKER - TL 7.3-9.5 mm. Dark red brown. Central area of head with about ten longitudinal rugae, these are irregular, anastomosed or reticulate and interrupted. Minors, and even less, majors have a small smooth space on the vertex. The transverse ridge of the vertex is strong or double and sinuous, behind the ridge the longitudinal rugae continue but diverge. Rugae on the cheeks are stronger and regular continuing into the scape area where they anastomose. Sides of head more finely sculpted, without a smooth space towards the lower border. Medial carina of alitrunk well developed, reaching back to the transverse ridge separating the dorsum and declivity of the mesonotum. In majors the arched rugae of the pronotum dorsum are more transverse, and the posterior parts more parallel to the median; in minors the arched rugae become less obviously parallel to the median posteriorly; these often are very irregular and reticulate especially on the shoulders.
Rugae of dorsal mesonotum longitudinal, regular and spaced out from the median carina. Mesonotum declivity irregularly rugulose and striated across in majors and lengthwise in minors. Propodeum dorsum grossly and irregularly striated longitudinally, with rugae more spaced in the minors, sometimes being more reduced towards the posterior. Lateral alitrunk and summit of pedicel nodes with longitudinal or even crossways (on nodes?) rugae. Tibiae, scapes and mandibles striated.
Head as wide or wider than long in majors, a little narrower in minors. Slightly narrowing forward, posterior and lateral borders almost straight; cervical border strongly convex. Eyes larger and more forwards than natalensis. Frontal margin sinuous; frontal area striated but not strongly. Clypeus smooth and carinate. Mandibles with 4 teeth. Funiculus like that of natalensis but less elongated. Pronotum relatively larger and strongly dentate laterally as with natalensis. Promesonotal suture impressed and mesonotal lobes developed. Propodeal dorsum longer and less widened in front; only a quarter to one-third longer than wide, with majors relatively longer than minors. Anterior and posterior faces of petiole node symmetrical as in striata, but with a longer and less elevated summit; wider than long. Postpetiole nearly as high as the petiole, anterior face very oblique (as in striata), but with the summit longer and the posterior face vertical.

{Myrmicaria baumi}The photomontage of the type worker is collated from

Oxford University Museum specimens

Myrmicaria baumi
B Taylor det.
J-F Vayssieres
RVA 3093.4
10°40'05'' N
01°18'14'' E
Acacia sieberiana
234 m asl


{Myrmicaria baumi} The photomontage is of a probable minor worker from Benin, Tanquiéta; collector J-F Vayssieres (RVA 3093.

© 2007, 2008, 2009, 2010, 2013, 2014, 2016 - Brian Taylor CBiol FRSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.