The Ants of Africa
"Dorylus (Typhlopone) fulvus" - separation of workers

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Separation of available workers

1 Head distinctly rectangular with most of the sides parallel 2
-- Head with convex sides and quite strongly rounded posterior corners 3
. Head distinctly rectangular .
2 Dorylus fulvus mordaxTL 2.8-6.5 mm (22 workers found); reddish brown; not as pale as punicus [juvenculus?], gaster slightly paler than the alitrunk; mandibles, funiculuus, frontal carinae and anterior clypeus brownish; head with much finer puncturation than the type fulvus; head with more parallel sides (cf saharensis); pygidium more strongly impressed than juvenculus and punicus Ivory Coast - (impressus) mordax
-- {Dorylus fulvus}{Dorylus fulvus type}Major TL 9.0 mm, HW 1.7, HL 2.1, SI 45; castaneous, head palest (anterior margin blackish), alitrunk and petiole slightly darker, scapes and funiculi more so; mandible castaneous with the apex black; shiny; head with minute punctures anteriorly; alitrunk with larger punctures and a reticulate ground sculpture; petiole with minute punctures and faintly reticulate, petiole from above subtruncate anteriorly, posterior angles rounded, ventral process angular .
. {Dorylus fulvus} .
. {Dorylus fulvus petiole} West Africa & Congo Basin - fulvus
¤ Dorylus fulvus stramineusMajor TL 14 mm; straw colour with a darker head; mandibles and legs dark brown Cameroun - stramineus
¤ Dorylus fulvus dentifronsMajor TL 14 mm; red-brown; head with larger puncturations; major mandible dorsum black, with a single basal tooth Zaire - dentifrons
-- {Dorylus oraniensis}TL ca 10 mm; frontal carinae markedly projecting forward; scapes very short SI 30; longitudinal groove on propodeum clearly visible; petiole sub-rectangular, longer than wide; head smooth and shiny
 .
. {Dorylus oraniensis major petiole} North Africa - oraniensis
--

{Dorylus eurous major}< TL 12 mm, SI 45; head distinctly punctate; head mahogany red, alitrunk, scape and legs paler, gaster amber

 .
. {Dorylus eurous major petiole Kenya-Sudan-Ethiopia - eurous
. Head with convex sides and quite strongly rounded posterior corners .
3 Major TL < 10 mm 4
-- Major TL 11-12 mm 5
4 {Dorylus rhodesiae} Major TL max 8 mm; pale coloured (paler than the type fulvus); head noticeably shorter than eurous, occiput more feeblyimpressed that the type or badius; HL ca 1/6 longer than HW, distinctly narrowed posteriorly, with more rounded angles than the type; petiole node as wide as it is long, with posterior angles more rounded than the type
. {Dorylus rhodesiae major petiole} Kenya-southwards to Zimbabwe - rhodesiae
5 Major head relatively short and with weakly concave or bowed sides 6
-- {Dorylus juvenculus}Major head relatively longer with straighter sides .

{Dorylus juvenculus major petiole}TL (punicus) ca 2.0-10 mm; smooth and shiny, the head an elongated rectangle, the gaster short; the alitrunk dorsum flattened and the legs short; North Africa to Israel - juvenculus
6 {Dorylus badius}Major TL 13 mm; HW 2.8 HL 3.2; base colour anterior dark castaneous red, progressively lightening, gaster dark brownish-yellow; almost all very shiny; head sparsely punctured with minute shallow punctures; petiole node sub-quadrate, as long as it is wide, all the angles strongly rounded, with a triangular ventral process South Africa - badius
-- {Dorylus obscurior}TL 5-13 mm; head, alitrunk, petiole and legs rich chestnut brown, gaster brownish yellow, mandibles and antennae near black; smallest morphs more uniformly brownish yellow; alitrunk with no more than fine sculpturation .
. {Dorylus obscurior} Congo Basin - obscurior
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© 2009, 2012, 2014 - Brian Taylor CBiol FSB FRES
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