The Ants of Africa
Genus Dorylus - Subgenus Rhogmus

Dorylus (Rhogmus) fuscipennis (Emery)

Dorylus (Rhogmus) fuscipennis Emery

return to key Male return to key {link to the Hymenoptera Name Server} Type location Ghana (Rhogmus fuscipennis, n. sp., Emery, 1892d: 570, male only; D. fuscipennis in Emery, 1895j: 737; Forel, 1909d: 224, footnote, worker; Forel, 1913h: 349, full worker description), collected by Ch. Alluaud, at Assinie, now in Ivory Coast but the area borders on Ghana - no images on Antweb (July 2014). Worker described in full by Forel (1913h: 349), with collection details the same as for the male lugubris, i.e. Aburi, Ghana, by Fisch - see below.
junior synonym
lugubris (Dorylus (Rhogmus) fimbriatus Em. var. lugubris n. var., Santschi, 1919b: 232, male; synonymy here) from Ghana, collected at Aburi, by Fisch - see below
subspecies
marginiventris (Dorylus (Rhogmus) fimbriatus Em. var. marginiventris n. var., Santschi, 1919b: 233, male) from Ivory Coast, collected at Dimbroko, by Le Moult; both the latter corrected by Santschi, 1919h: 91, to place these under fuscipennis and not fimbriatus) - see http://www.antweb.org/specimenImages.do?code=casent0911352
male and worker known (see Bolton, 1995) .


Dorylus fuscipennis maleEmery's (1892d) description of the male is at {original description}. Emery's (1895j) has a description with illustrations of the male, which is at {original description}. Forel's (1913h) description of the worker is at {original description}. Santschi (1919b) notes the male of marginiventris as with a brighter red alitrunk, the gaster with all segments with a darker brown posterior border, and the head blackish, see {original description}.

Forel (1913h) reported the worker "not previously described" -
TL 3.8-6.9 mm; mandibles elbowed basally, then quite strongly curved and armed with 3 teeth as some distance, with the apical tooth pointed, long and curved, and the other two large and triangular ; mandibles strongly and densely puncturate, smooth between the punctures. Head rectangular, a little longer than wide (up to one-fifth longer); with straight sides and the occiput deeply scalloped in an arc; posterior angles somewhat flared, abruptly and feebly rounded; but the occiput is distinctly flattened. A quite deep occipital notch, continues forward centrally into the post-clypeal notch. Frontal carinae short and distinctly separated. Anterior border of clypeus feebly protruding medially, being a little merged with the frontal carinae. Antennae 10-segmented in largest morph and in the smallest. Scape not reaching the mid-line of the head. Eyeless. Thorax narrower than the head, with a single very distinct, quite deep, suture set a little forward of the mid-point; dorsal profile almost flat; dorsum of propodeum about as wide as long, subbordered and three times as long as the declivity. Petiole node one and a quarter times wider than long, slightly narrower at the anterior. Postpetiole wider than long, not much larger than petiole. Gaster slightly waisted behind the postpetiole.
Head densely, grossly and deeply puncturate; the puncturation being slightly less profound on the thorax; and much finer and more spaced out on the pedicel and gaster. Thorax and pedicel sub-opaque, with similar sculpture but more reticulate; gaster somewhat shiny and feebly reticulate; the posterior two-thirds of the head is smooth between the punctures.
Almost no erect hairs; pubescence semi-decumbent, short, yellowish and distinct on the appendages; sparse on the body.
Head and mandibles rust or brownish; thorax reddish; petiole, gaster and appendages yellow or slightly rust.
Specimens from Aburi, Ghana, collected by Fisch with the males marching in the column. "I have had the worker for a long time but had neglected to describe it before".

The status of the specimens is confusing if, as Wheeler had it, the original description of the male was by Emery (1895, illustrated) from "West Africa, Haitifi?" but Emery (1901c) separated the major worker from fimbriatus on the grounds of fuscipennis having antennae with ten segments (11 in fimbriatus; Forel (1913h) described the worker from Aburi collected by Fisch and yet Santschi (1919b) purported to describe the lugubris male from the same location and by the same collector?.

Also known from Congo (Wheeler, 1922).


Dorylus fuscipennis maleThe photomontage is of a male, from the collection label this is lugubris, from Ghana, Aburi, collector Fisch; collated from http://www.antweb.org/specimen.do?name=casent0903764. See also http://www.antweb.org/specimenImages.do?code=casent0911350.


Dorylus fuscipennis maleThe photomontage is of a worker from Ghana, Aburi, collector Fisch; collated from http://www.antweb.org/specimen.do?name=casent0903764. Note the defaced label has lugubris, but the details are as given by Forel (1913h).


Oxford University Museum specimens

Dorylus (Anomma) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
1998

16.vi.1998
Dzanga-Sangha


Bayanga-Lidjombo; U.V. 19h-05h; LAYON PK 21 5.0 RCA 2
{album}
Dorylus (Rhogmus) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
Di-14
20.i.2005
Dzanga-Sangha
0355’13.2" N
1636’46.1" E
U.V : 2h-6h, aprs Sefka (entre Bambio et croisement Nola/Berberati), dans layon forestier;
from on a reduviid bug; collected in forest, 1st hour of the morning; 536m asl
1
{album}
Dorylus (Rhogmus) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
JW
19.x.2008
Dzanga-Sangha
0301'49.5" N
1608'31.7" E
567 m; Camp 2; 18h-2h; A la base du kungu, 50 m du camp
1
{album}
Dorylus (Rhogmus) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
HI
13.x.2008
Dzanga-Sangha
0422'19.4" N
1835'49.7" E
360 m; Camp 1; 17h30-3h;
A la base de l'Ayous (Triplochiton scleroxylon, Sterculiaceae) 50 m du Camp
1

Dorylus (Rhogmus) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
KT
23.x.2008
Dzanga-Sangha
0301'49.5" N
1608'31.7" E
567 m; Camp 2; 18h-6h; Sur plate-forme 40 m du sol dans un kungu, 50 m du camp
1

Dorylus (Rhogmus) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
JL
17.x.2008
Dzanga-Sangha
0303'58.3" N
1608'59.6" E
528 m; Camp 1; 17h30-2h;
A la base de l'Ayous (Triplochiton scleroxylon, Sterculiaceae) 50 m du Camp
1

Dorylus (Rhogmus) fuscipennis
B Taylor det.
Male
Central African Republic
P Annoyer
KF
21.x.2008
Dzanga-Sangha
0301'49.5" N
1608'31.7" E
567 m; Camp 2; 17h30-3h30; A la base du kungu, 50 m du camp
1


{Dorylus fuscipennis male}The photomontage is of a male from the Central African Republic, Dzanga-Sangha NP; collector Philippe Annoyer (Di on reduviid).


{Dorylus fuscipennis male}The photomontage is of a male from the Central African Republic, Dzanga-Sangha NP; collector Philippe Annoyer (CAR 1998-10).

Contents
2007, 2008, 2009, 2010, 2011, 2013 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.

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