The Ants of Africa
Genus Crematogaster
Crematogaster (Crematogaster) sjostedti Mayr - analysis

Crematogaster (Crematogaster) sjostedti Mayr - analysis

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{Crematogaster sjostedti varieties}Mayr's (1907b) description is at {original description}. Forel's (1913a) description of bulawayensis is at {original description}. Forel's (1913b) description of oraclum is at {original description}. Forel's (1914d) description of godefreyi is at {original description}. Santschi's (1914b) description of pulla is at {original description}. Forel's (1916) description of kohliella, as strain of sjostedti, is at {original description}. Forel's (1916) description of foraminicipoides is at {original description}. Santschi's (1916b) description of bulawayensis, infaceta and pudica is at {original description} and {original description}. Santschi's (1917b) description of carininotum is at {original description}. Santschi's (1919b) description of rufescens is at {original description}. Santschi's (1920b) description of zulu is at {original description}. Arnold (1920a) gave an illustrated translation of bulawayensis, which he regarded as a full species; this is at {original description}. Arnold (1920a) gave a translation of carininotum, as a race of neuvillei which he regarded as a full species, this is at {original description}. Arnold (1920a) gave an illustrated translation of godefreyi [as godfreyi], this is at {original description}. Arnold (1920a) gave a translation of foraminicipoides, as a variety of godefreyi, this is at {original description}. Arnold (1920a) gave a translation of infaceta, as a race of bulawayenis, and its variety pudica, this is at {original description}. Arnold (1926) gave a translation of bulawayensis varieties rufescens and zulu, this is at {original description}. Santschi's (1928d) description of inquieta, as a variety of sjostedti, is at {original description}. Santschi's (1937a) description of tricoloroides, as "Crematogaster (Acrocelia) gerstaeckeri st. sjostedti var. tricoloroides", is at {original description}.

Note: With most, if not all, the descriptions the workers have a size range from ca 3.0-4.0 mm. The Antweb type images, therefore, probably represent just one size from a set of workers labelled "type".

Crematogaster (Cr.) kohliella.
Type location Zare, (Cremastogaster excisa Mayr r. Andrei For. v. Kohliella n. var. Forel, 1916: 409, worker) from St. Gabriel, by Kohl (in Santschi, 1918d: 185, as C. Sjoestedti Mayr, stirps Kohliella For.) - see http://www.antweb.org/specimenImages.do?name=casent0908562
Similar in form and proportions to sjostedti but much less sculpturation, notably on the head, shiny appearance and brown colour different enough to warrant separate species status.
Crematogaster kohliella
Zare
Crematogaster (Cr.) gerstaeckeri
type location Kenya (Cremastogaster Gerstaeckeri m. vor., Dalla Torre, 1892: 90, original description but name replaced as unavailable Cremastogaster cephalotes n. sp., Gerstaecker, 1871: 356; Menozzi, 1930b: 91, illustrated, all forms) from Mombasa, in Acacia galls; the Menozzi specimens were from Somalia
TL (Gerstaecker) 3.75-4 mm; piceus (i.e. dark brown-near black)
Crematogaster gerstaeckeri non-type
Kenya
Appears to be spread across the sub-Saharan (Sahel) zone - fresh specimen from Cameroun
Crematogaster gerstaeckeri fresh worker

Crematogaster sjostedti - click the images to see full photomontages


sjostedti type (major) - squarer head, slighlty shorter propodeal spines
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.
sjostedti type
Tanzania
sjostedti type (minor) Crematogaster sjostedti minor

junior synonyms of sjostedti (here) - arranged in order of apparently increasing darkness (note colour variation in Antweb imaging)


godefreyi (Cremastogaster foraminiceps Sant. r. Godefreyi n. stirps,  Forel, 1914d: 237, worker;  from South Africa, Cap. Col., R Godefrey
j syn sjostedti - exact match for major
junior synonym carininotum, Santschi, 1917b: 279, worker, from Zimbabwe, synonymy Santschi, 1918d: 184) - no images on Antweb (August 2016)
Crematogaster godefreyi
Southeast Africa
rufescens (Crematogaster sjoestedti Mayr stirps bulawayensis For. var. rufescens n. var., Santschi, 1919b: 236, worker; Wheeler, 1922: 844) from South Africa, Natal, Haviland - see http://www.antweb.org/specimenImages.do?code=casent0912675
jsyn of sjostedti - matches mallest minor from the colony in Mkomzai
Crematogaster rufescens
South Africa
sjostedti var. tricoloroides, Santschi, 1937a: 55, worker) from Kenya - see http://www.antweb.org/specimenImages.do?code=casent0912676
General form and proportions match sjostedti but ca 15% larger; apparent colour difference slight
Crematogaster tricoloroides
Kenya
bulawayensis (Cr. africana, r buchneri var bulawayensis, Forel, 1913a: 125, worker) - see http://www.antweb.org/specimenImages.do?code=casent0908560
jsyn of sjostedti - matches smallest minor from the colony in Mkomzai (below)
Crematogaster bulawayensis
Zimbabwe
inquieta (Crematogaster (Acrocoelia) sjostedti Mayr v. inquieta n. var., Santschi, 1928d: 65, worker) Zimbabwe, Salisbury, 8.vi.1919, G Arnold  - see http://www.antweb.org/specimenImages.do?code=casent0902107.
j syn of sjostedti - exact match
Crematogaster inquieta
Zimbabwe
foraminicipoides (Cremastogaster vulcania Sant. r. Godefreyi For. v. foraminicipoides n. var.,  Forel, 1916: 406, worker; Crematogaster godefreyi var. foraminicipoides Arnold, 1920a: 505; junior synonym of bulawayensis Santschi, 1926b:214)) Zimbabwe, Bulawayo, Arnold; j syn major slightly larger
Crematogaster foraminicipoides
Zimbabwe
pudica (Crematogaster bulawayensis For. stirps infaceta Santschi var. pudica n. var., Santschi, 1916b: 499, worker; Santschi, 1930b: 69) from Zimbabwe - see http://www.antweb.org/specimenImages.do?code=casent0912674
General form and proportions match sjostedti but ca 15% larger; exact match to foraminicipoides and tricoloroides
Crematogaster pudica
Zimbabwe
pulla (Cremastogaster gallicola For. stirps Sjostedti var. pulla nov. Santschi, 1914b: 94, worker; Wheeler, 1922: 844) from Kenya, Mbuyuni, iii.1912, Alluaud & Jeannel - see http://www.antweb.org/specimenImages.do?code=casent0904509
junior syn of sjostedti - exact match
Crematogaster pulla Kenya
infaceta (Crematogaster bulawayensis For. stirps infaceta n. stirps, Santschi, 1916b: 498, worker) Zimbabwe, Victoria Falls, G Arnold - see http://www.antweb.org/specimenImages.do?code=casent0912671
general form, size and proportions match sjostedti type but darker
Crematogaster infaceta
Zimbabwe
zulu (Santschi, 1920b: 15, worker & queen; Wheeler, 1922: 855) from South Africa, Mfongosi, W F Tones, xi.1918 - see http://www.antweb.org/specimenImages.do?code=casent0912677 Crematogaster zulu
South Africa
oraclum (Cremastogaster gallicola For. v. oraclum n. v., Forel, 1913b: 323, worker) from Zare, ?Sankisia by J. Bequaert - see http://www.antweb.org/specimenImages.do?code=casent0912673
Apart from the bizarre colouration, the form, size and proportions match the minor worker of sjostedti
Crematogaster oraclum
Zare

Contents
2007, 2008, 2013, 2015, 2016 - Brian Taylor CBiol FRSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.

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