Dorylus (Typhlopone) fulvus (Westwood)
Type location North Africa (as Typhlopone fulva,
Westwood, 1839: 219, illustrated, worker); subspecies badius
from Mozambique (Gerstacker, 1859: 261, worker) (with
its synonym rhodesiae from Zimbabwe, Forel, 1913a:
111, worker), crosi from Algeria (Santschi, 1926e:
230, worker & male), dentifrons from Zaïre
(Wasmann, 1904b: 673, worker) (with its synonym stramineus
from Cameroun (Stitz, 1910: 128, workers), eurous
from Ethiopia (Emery, 1915g: 5, illustrated, workers),
glabratus from Gambia (Shuckard, 1840c: 317,
male), juvenculus from Morocco (Shuckard, 1840c: 318,
male; junior synonym oraniensis, Lucas, 1849: 302,
illustrated, worker, synonymy by Emery, 1888b: 350), mordax
(synonym replaced impressus) from Ivory Coast
(Santschi, 1931d: 407), obscurior from Guinea (Wheeler,
1925b: 1; workers; but use of variety obscurior Santschi,
1914d: 333 - collected by F. Silvestri), punicus from Tunisia
(Santschi, 1926e: 231, illustrated, worker & male; Santschi,
1931d: 401, illustrated, queen), ruficeps from Lebanon
(Santschi, 1926e: 232, male) and saharensis from "Sahara"
(Santschi, 1926e: 231, illustrated, male); junior synonyms clausii
from North Africa (Joseph, 1882: 47, worker),
dahlbomii (Westwood, 1840b: 88, illustrated, worker),
kirbii (Shuckard, 1840b: 265, worker), spinolae (Shuckard,
1840c: 327, worker) and thwaitsii (Shuckard, 1840c: 326,
worker)(location not known), shuckardi from Guinea
(Westwood, 1840b: 88, illustrated, worker; Ritsema, 1874: 182,
male, is a paper on New Guinea!); all forms known (see Bolton,
1995) .
Gerstaecker's (1859) description of badius is -
"Dorylus badius, n.sp.; pedunculo abdominis
quadrato, mandibulis elongatis, acutis, dilute rufo-brunneus,
cano-tomentosus, abdomine sericeo-micante, segmento ultimo laevi,
apice rufo-piloso; capite negro, vertice alto elevato, alarum
venis nigro-fuscis. Long. lin. 14-15½. Mas."
Santschi (1928d) provided a fresh description of the type
specimen, made by W.C. Crawley, of the Oxford (University) Museum;
that together with Santschi's description of impressus is
at .
Shuckard's (1840c) description of glabratus is at
.
Shuckard's (1840c) description of juvenculus is at
.
Lucas's (1849) description of oraniensis is at
.
Wasmann's (1904b) description of dentifrons is at
.
Stitz's (1910) description of stramineus is at
.
Santschi's (1914b) description of badius is at
.
Santschi's (1914d) description of obscurior is at
.
Emery (1915g) described eurous and provided illustrated
comparative notes - these are at
.
The images (above right) appear to suggest the West African/Congo
Basin form, dentifrons, may be significantly different,
with rhodesiae and badius being a smaller East
African form.
Egypt records - Finzi (1936) noted workers (as D
(T.) fulvus var punicus) collected at Asyut,
4.ii.1933, Marsa Matrouh, 19.iii.1933, Cairo (Sakkarah),
19.ii.1933, and Soloum, 23.iii.1933. Cairo, Luxor, Mariut,
El-Dekheila, Marsa Matrouh, Siwa oasis, Alexandria (Sharaf list).
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Dorylus fulvus punicus
The
queen was described and illustrated by Santschi (1931d). His paper
is at .
He noted the workers as - much smaller (than the queen) and with
much variation in size, from the smallest at TL 2 mm to the
soldiers at 1 cm. They are smooth and shiny, the colour of the
queen (yellowish red, gaster lighter; funiculi and smallest tarsi
reddish brown); the head an elongated rectangle, the gaster short,
the dorsum flattened and the legs short. |
The
polymorphism photomontage is of specimens from Israel, Jaffa,
2.ii.1952, collector J Wahrmann (?), sent to BT by Armin Ionescu,
Tel Aviv University. Photomontages of the different morphs are on
the linked page - Dorylus
fulvus morphs. This population seems a close match to
the type description and the head shape of the major is similar to
that shown by Emery (1915g) for the North East African form eurous. |
The photomontage of a male is a specimen from Israel, Had Hagaren,
Tel Aviv, 23.x.1972, collector J Kugler, sent to BT by Armin
Ionescu, Tel Aviv University. |
Dorylus fulvus oraniensis
The specimen shown right (above) is a major, from Southern Tunisia,
Tozeur, collector T. Lackner, 16-17.iii.2003; and appears to match
the form shown above (Emery 1915g) for D. (D.) fulvus
variety oraniensis, from Tunisia. The lower photograph is
of three morphs from the Tunisia collection. The longitudinal
groove on the propodeum, mentioned by Lucas as a differentiating
feature, is clearly visible. Compared with the type redescription
(W C Crawley for Santschi, 1928d) the metanotal groove is
noticeably impressed rather than being "slightly indicated";
also the head does not narrow significantly at the occiput.
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Dorylus fulvus badius
Arnold
(1915) gave the following notes and descriptions -
"The type species appears to be confined to the northern
portion, of Africa, and is replaced in equatorial and S.E.
tropical Africa by the following race, which has not been recorded
to my knowledge from temperate South Africa.
The sub-genus includes only this species and D. labiatus
of the Indian region.
Description - race badius Gerstaecker. (Plate IV., figs,
31, 31a, 32, 32a, 32b.)
Mandibles piceous brown, scape of antenna, head and thorax dark
castaneous red, but getting gradually lighter from the head to the
petiole; abdomen dark brownish yellow, or ochreous with a slight
reddish tinge; legs ferruginous; funiculus dark brown above,
lighter underneath. Head, thorax and abdomen very shining, except
the anterior third of the head, the vertical anterior face of the
pronotum, the mesopleura, the petiole and the propodeum, which are
duller, owing to a rugulosity of the surface which is almost
microscopic on the head, but somewhat stronger on the other parts.
Head sparsely punctured, with small, discrete and shallow
punctures; scape of antenna more coarsely punctured. Pro- and
mesonotum sparsely, but much more coarsely punctured than the
head. Propodeum and petiole very shallowly and more closely
punctured, the punctures being smaller than on the pronotum.
Gaster finely and sparsely punctured. A short, yellow pubescent
hair is inserted in each puncture, those on the head being very
fine.
Head very slightly narrowed posteriorly, the sides are almost
parallel, posterior margin shallowly arcuate. Mandibles
sub-nitidulous, striato-punctate, the apex sub-acute, the
pre-apical tooth small and blunt, the sub-apical very obtuse or
represented only by a swelling on the margin. The frontal carinae
are considerably raised, divergent and vertical, in front, and
project distinctly over the very short clypeus; they are angularly
bent just above the antennal sockets, so that their posterior half
is horizontal. Between them posteriorly is a very smooth and
shining oval area, which is continued into a, moderately deep
groove with rounded margins which becomes very faint on the
vertex, and again deepens towards the occipital margin. The
frontal carinae are not spinously produced backwards as in helvolus
and affinis. Antennae 11-jointed; the scape is strongly
incrassate towards the apex, and not longer than the first 7
joints of the funiculus. The 1st joint of the funiculus very short
and about as long as wide, all the other joints except the apical
much wider than long; all the joints closely punctured and densely
pubescent beneath.
Pronotum narrowed and depressed anteriorly to form a short neck;
it is widest behind this part and. narrows towards the mesonotum,
from which it is separated by a distinct and angular suture. The
mesonotum widens posteriorly, where it is two-thirds wider than
long. The propodeum is widest at its base (on each side of which
lies a prominent spiracle), and narrows but slightly towards the
short and vertical declivity; the brow of the latter is
considerably rounded above and at the corners. The dorsum of the
propodeum has a longitudinal median impression. Seen from the
side, the dorsum of the whole thorax is flat and rather distinctly
delimited from the sides, which are vertical or nearly so.
The node of the petiole is almost sub-quadrate, or a little wider
behind than in front, as long as, or only very little longer than
wide, all the angles strongly rounded; the ventral lamella is
produced into a triangular projection.
The gaster widens gradually towards the apical margin of the 3rd
segment, all the segments wider than long. The pygidial area of
the 5th segment is dull and only shallowly impressed, forming a
more or less oval fovea, not semi-circular or bounded by a sharp
raised margin, as in the subgenus Dorylus. By this
character, and also by the longer petiole and the frontal carinae
without spines, all the workers of this species can be
distinguished at a glance from those of the subgenus Dorylus.
Worker minor - TL 8-3 mm. In these the colour is much lighter, or
more or less reddish yellow. Antennae 11-jointed, as in the
maxima. Proportionately the head is wider in front than in the
maxima. The puncturation is finer and the pubescence is more
apparent. In the smaller forms, the frontal carinae project
further forwards and are more convergent posteriorly, or even meet
to form a single lamina. The median impression on the head is much
shallower and shorter, or almost obsolete. The mandibles are more
shining, with three teeth more acute and distinctly defined.
Worker minima. It is probable that there are some of this class,
and measuring less than the smallest of the minor class. I do not,
however possess any smaller than 3 mm, nor do I know of any
workers of of a smaller size of this race having been described by
any author.
The males of this species are exceedingly common at light during
the rainy season in Zimbabwe (South Rhodesia); the workers
however, do not appear to be so frequently met with as helvolus.
Females unknown.
(G.A., R.M., S.A.M. coils.)" |
WORKERS
- TL (variety obscurior) 5 to 13 mm; head, thorax, petiole
and legs rich chestnut brown, gaster brownish yellow, mandibles
and antennae near black; smallest morphs more uniformly brownish
yellow (Wheeler, 1922).
Wheeler (1922) included drawings of the soldier, in dorsal view
of the full insect (top right), and details of the male, of the
subspecies badius. The specimens were collected from the
floor of a hut, where they came up out of a hole in the floor.
Wheeler (1922) lists findings of the nominal species and the
various subspecies, which include Senegal at Thiès
(F. Silvestri), Guinea at Conakry (F. Silvestri), Gambia
(ssp. glabratus, no location), Cameroun (at
Mundame, by Conradt), Ghana (Accra, by Unger); numerous
other countries. |
The male of the South African form fulvus badius was
drawn by Arnold (1915) and the photomontage is of a specimen
collected by M. Snizek from South Africa, North Cape, Kuruman env,
14.i.2001
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