Crematogaster (Crematogaster) sjostedti Mayr

TL 3.1-3.6 mm; the main diagnostic characteristics seem to be - short funiculus segments and a fairly short scape; a median carina on the dorsal mesonotum; short propodeal spines.

It seems quite clear that the synonymy, some of which derives from Santschi (1930b: 69), is far from satisfactory. The illustrations provided by Arnold show major variations in, for instance, length of propodeal spines. Thus, I have separated what appear from the literature to be two distinct species - gerstaeckeri and sjostedti. The synonymy as given in Bolton's Catalogue (1995: 153) can be found under Crematogaster gerstaeckeri.

Type location Tanzania (Cremastogaster Sjöstedti nov. spec., Mayr, 1907b: 17, worker; listed as a stirps of gerstaeckeri by Santschi, 1930b: 69 BUT without any explanation) Usambara near Tanda - see below. .

I have attempted an analysis of the forms listed as gerstaeckeri "subspecies" by Bolton (1995: 153) see  - Crematogaster sjoestedti analysis.

Mayr's (1907b) description is at . 

The photomontage of a syntype (major) worker is collated from http://www.antweb.org/specimen.do?name=casent0902105

The photomontage of a syntype (minor) worker is collated from http://www.antweb.org/specimen.do?name=casent0919667
slightly smaller, with a narrower head and perhaps slightly longer propodeal spines.

Oxford University Museum specimens

Crematogaster (Crematogaster) sjostedti B Taylor det.	Tanzania G McGavin tree 3-68	8.iv.1995 Mkomazi 3°54.75' S 37°48.58' E	pkd collection from Terminalia brownii	4
Crematogaster (Crematogaster) sjostedti B Taylor det.	Tanzania G McGavin tree 2-25	9.iv.1995 Mkomazi 3°54.75' S 37°48.50' E	pkd collection from Combretum molle	3
Crematogaster (Crematogaster) sjostedti B Taylor det.	Tanzania G McGavin tree 2-31	9.iv.1995 Mkomazi 3°54.75' S 37°48.50' E	pkd collection from Combretum molle	3

The photomontage is of a major worker from Tanzania, Mkomazi Game Reserve; collector G McGavin (Tree 2/31).

As the type location is in the W Usambara Mts, at ca. 3°15.3' S 37°31.05' E, these Mkomazi specimens clearly match the type form.; Mayr (1907b) placed them in his earlier (1895: 137) key couplet embracing, e.g. C. acaciae and gallicola, with segments 3-5 wider than long

The photomontage is of a minor worker from Tanzania, Mkomazi Game Reserve; collector G McGavin (Tree 2/31).

The photomontage is of a worker from Tanzania, Mkomazi Game Reserve; collector G McGavin (Tree 2/25).