The Ants of Africa
Genus Crematogaster
Crematogaster (Nematocrema) stadelmanni Mayr

Crematogaster (Nematocrema) stadelmanni Mayr

return to key {link to the Hymenoptera Name Server} Type location Liberia (Cremastogaster Stadelmanni nov. spec., Mayr, 1895: 140, worker & queen) - see cotype (from Cameroun) below
subspecies
anguliceps (Cremastogaster (Oxygyne) stadelmanni Mayr v. anguliceps n. v., Stitz, 1916: 384, illustrated, worker) from Cameroun, at Ossidinge, no collector given - no images on Antweb (January 2015)
angustata (Cremastogaster Stadelmanni var. angustata nov. var., Mayr, 1895: 142, worker) from Cameroun, collector H. Brauns - no images on Antweb (January 2015)
gracilenta (Cremastogaster (Oxygyne) stadelmanni Mayr var. gracilenta n. v., Viehmeyer, 1922: 210, worker & queen) from Cameroun, Rio del Rey, K Krausse - see http://www.antweb.org/specimenImages.do?name=casent0908650
intermedia (Cremastogaster Stadelmanni Mayr var. intermedia nov. var., Mayr, 1896: 242, worker & queen) from Cameroun, collector Sjöstedt - see below
dolichocephala (Cremastogaster (Oxygyne) Stadelmanni Mayr v. doliocephala Em., Santschi, 1911g: 208, all forms) from Congo, at Brazzaville, by A. Weiss - see http://www.antweb.org/specimenImages.do?code=casent0912738
ovinodis (Cremastogaster (Oxygyne) stadelmanni Mayr v. ovinodis n. v., Stitz, 1916: 383, illustrated, worker) from Zaïre, at Duma, by Schubotz - no images on Antweb (January 2015)
spissata (Crematogaster (Nematocrema) stadelmanni Mayr v. spissata n. v., Santschi, 1937g: 81, illustrated) from Zaïre, Sankuru, E Luja - see http://www.antweb.org/specimenImages.do?code=casent0912739
schereri (Cremastogaster Stadelmanni Mayr var. Schereri n. var., Forel, 1911e: 273, worker) from Liberia, at Bendov, by Scherer - http://www.antweb.org/specimenImages.do?name=casent0908651
all forms known (see Bolton, 1995) .


{Crematogaster stadelmanni varieties} Mayr's (1895) description, with angustata, is at {original description} and {original description}. Mayr's (1896) description of intermedia is at {original description}. Forel's (1911e) description of schereri is at {original description}. Santschi's (1911g) description of dolichocephala is at {original description}. Stitz's (1916) descriptions of ovinodis and anguliceps are at {original description}. Viehmeyer's (1922) description of gracilenta is at {original description}. Santschi's (1937g) illustrated description of spissata is at {original description}.

From the variations in colour and from shown by the type images and the fresh specimens I have, this is a collection of related species and not "subspevies" etc.


Crematogaster stadelmanni queenDrawing of head of dolichocephala queen from Emery (1922f, Plate 3, Fig 11) - link to sexuals photomontages


{Crematogaster (N.) stadelmanni}Wheeler (1922) had other records including Guinea (Conakry, by F. Silvestri), Cameroun (Conradt; Victoria by R. Buchholz, ), Nigeria (dolichocephala at Ibadan, by F. Silvestri). He also gave details and photographs (left and "click") of nests of dolichocephala, as being cone-shaped hard carton structures some 60 cm long, hanging on a tree, often between two or more creepers. Forel (1915c, 1916) had similar reports from Zaïre, St. Gabriel, collected by Kohl, of both the type and doliocephala with carton nests in trees, the latter nest being 35 cm tall by 20 cm wide against a branch.

Santschi (1935) noted 2 specimens of anguliceps from Dingila, Zaïre, collected by H.-J. Brédo, 30.vi.1923. Note - the minor specimen shown below from Gabon (Gabon 188) has the squarer head on anguliceps.


Listed from Ghana by Strickland (1948, 1951a) as the commonest of the minor subgenus species on cocoa, and found on several forest trees. Bolton (1970-71) described it as the only member of the subgenus in Ghana and listed it as one of the six most common carton-nesting Crematogaster species on cocoa (simply at CRIG or in Ghana is not clear), adding, however, that it was found in open woodland but uncommon (presumably in terms of general abundance). Found in a cocoa canopy sample by Room (1971).

Reported by Bernard (1952) from Guinea, Mt. Nimba; several workers from scrub at Nion crest, 1300 m, and 2 alate queens from montane grassland, Mount Tô, 1600 m.

See nests as per - Phillippe Annoyer: Before going inside the forest (2010 expedition in CAR) we have spent 3 days in the Molongo village near Sangha river at 65 kms south of Bayanga.
A tree was climbing to take 2 ants nests and one was cut (like a cheese part) to the see reconstruction when we return from the forest (At return, 19 days later all of the part we take has been reconstructed, we collect this nest too).
A tomographical image and a reconstruction 3D of this piece of nest was made in the CHU of Grenoble.


{Crematogaster stadelmanni}The photomontage of the schereri type worker, from Liberia, so perhaps the true type form, is collated from http://www.antweb.org/specimen.do?name=casent0908649.


{Crematogaster stadelmanni}The photomontage of a "cotype" worker , from Cameroun not the type location of Liberia, is collated from http://www.antweb.org/specimen.do?name=casent0908649.


{Crematogaster stadelmanni intermedia}The photomontage of a syntype worker of intermedia is collated from http://www.antweb.org/specimen.do?name=casent0902068.


Oxford University Museum specimens

Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Liberia
E Poirier
Yekepa Camp 4
SLAM 2
6.iv.2013
Nimba County
07°33’04" N
08°33’17" E
SLAM trap
Floodplain & marsh
501 m asl
Queen
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Ivory Coast
Erena Dupont
iv.2014
Taï National Park
5˚45'00" N
7˚07'00" W
13
type form
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Cameroun
A Fotso Kuate
Crematogaster sp2
9.v.2007
Awae II
03°54'30" N
11°25'58" E
Quadrat in forest
1

Crematogaster (Nematocrema) stadelmanni
B Taylor det.

Cameroun
A Fotso Kuate
Crematogaster sp2

19.vii.2007
Awae II
03°54'30" N
11°25'58" E
Pitfall in fallow
(variant?)
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Cameroun
A Fotso Kuate
Crematogaster spA

22.i.2008
Sombo
03°54'30" N
11°25'58" E
Quadrat in fallow 2
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Gabon
Y Braet
Gabon 81a

9.vi-25.vi.2006
Pongara
00°34' N
09°19' E
Leaf litter, winkler funnel - WRONG
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Gabon
Y Braet
Gabon 188

17-22.v.2006
Pongara
00°34' N
09°19' E
Pointe Wingombe; under trees, malaise trap - striatula
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
Congo
E Zassi
19-t-3
23-24.xi.2007
Lésio-Louna
03°27'80.4" S
015°46'54.5" E
Wooded Savannah; 24h pitfall trap - ? C. (Atopogyne) buchneri
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
queen
Central African Republic
P Annoyer
FD
08.ii.2005
Dzanga-Sangha
02°50'03.0" N
6°08'11.2" E
375 m; Camp 3; 19h-23h
Sur plate-forme à 35 m du sol dans un Terminalia (Terminalia superba, Combretaceae)
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
queen
Central African Republic
P Annoyer
DN-05
25.i.2005
Dzanga-Sangha
02°48’20.5" N
16°06’14.0" E
Camp 1; U.V : 18h30-8h sur bute en forêt; 350 m asl
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
queen
Central African Republic
P Annoyer
OZ

28.xi.2010
Dzanga-Sangha
2°28'49.5"N
16°12'55.9"E
392 m; nuit, UV : 17h30 - 3h, Azobé, sol, camp de base lac 1
1
{album}
Crematogaster (Nematocrema) stadelmanni
B Taylor det.
male
Central African Republic
P Annoyer
KT
23.x.2008
Dzanga-Sangha
03°01'49.5" N
16°08'31.7" E
377 m; Camp 2; 18h-6h; Sur plate-forme à 40 m du sol dans un kungu, à 50 m du camp
1
{album}

Crematogaster stadelmanniWorkers from Cameroun; Sombo; collector A Fotso Kuate (fk crematogaster sp A).

With this and the one below the specimens have longer propodeal spines and a squarish head appearing to match the intermedia syntype shown above).


Crematogaster stadelmanniWorkers from Cameroun; Awae II; collector A Fotso Kuate (fk crematogaster sp 02)


Crematogaster stadelmanniWorkers from Senegal; Katane; collector B Ndiaye (fk crematogaster sp 02)


Probably not stadelmanni.


{Crematogaster stadelmanni}The photomontage is of a major worker from Congo, Réserve de Lésio-Louna; collector Eric Zassi (nsp 71; pitfall trap 19, t 3) - perhaps matching the anguliceps, square-headed form of Stitz (1916).



{Crematogaster stadelmanni}The photomontage is of a minor worker from Gabon, Pongara National Park; collector Yves Braet (Gabon 188). ?? Crematogaster striatula.

Contents
© 2007, 2008, 2009, 2011, 2013, 2015 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.

href="crematogaster_stadelmanni.htm"