Genus Crematogaster - Subgenus Oxygyne
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The Ants of Africa Genus Crematogaster - Subgenus Oxygyne |
| Genus Crematogaster Introduction |
Diagnostic Features - Antennae 11-jointed, with 3-segmented club. Frontal carinae short. According to Santschi (1935) the workers are completely lacking in erect hairs on the dorsum of the body, save for some on the anterior of the head and on the femora.
Arnold (1920a: 542) gave a translation and comments, this is at
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Separation of species (based on historical descriptions)
| 1 | Propodeal spines short, reduced to sharp denticles | 2 |
| - | Propodeal spines relatively long and narrow | 3 |
| 2 |  TL
2.9-3.3 mm; black-brown; sculpturation mostly of fine shagreening |
Cameroun &
Congo Basin -
margaritae |
| - |  TL
3.0-3.5 mm; black to dark brown; very finely reticulate, effaced in
small individuals; head longer than wide rounded behind the eyes;
antennal club indistinct 4-segmented; propodeum convex, spines, short
and dentiform |
Zimbabwe - donisthorpei |
| 3 |  TL
3.5-4.0 mm; black, moderately shining; head finely but densely striate,
alitrunk more coarsely longitudinally striate; no pilosity but sparse
fine yellowish pubescence; mandibles narrow but with four teeth; scape
surpassing occiput by one-third its length, club distinctly 3-segmented;
propodeal spines very acute, as long as dorsum of propodeum |
South Africa - oscaris |
| -- | Polished and shiny near black appearance | 4 |
| 4 |  TL
3.0 mm; gaster black, alitrunk and most of head brown-black, appendages
reddish-brown; pronotum rounded; propodeal spines sharp may be a junior
synonym of santschii |
Cameroun - trautweini |
| -- |  TL
< 2.0 mm; black to dark brown; almost unsculptured, very shiny; HL =
HW rounded behind the eyes; antennal club 4-segmented; propodeum convex,
spines relatively long and sharp |
Zaïre & South Africa - santschii |
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MYRMICINAE Introduction | © 2007, 2008 - Brian Taylor CBiol
FIBiol FRES 11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K. |
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