The Ants of Africa
Genus Crematogaster
Crematogaster (Sphaerocrema) wellmani Forel

Crematogaster (Sphaerocrema) wellmani Forel

return to key {link to the Hymenoptera Name Server} Type location Angola (Cremastogaster Wellmani n.sp., Forel, 1909b: 64, worker), Benguela, Creighton Wellman - see below
subspecies
luciae (Forel, 1913b: 325, queen, from Cameroun, see below; note Wheeler, 1922, had the type loc. as Sierra Leone) Gomba, Weiss - see http://www.antweb.org/specimenImages.do?code=casent0908610
weissi (Cremastogaster Wellmani For. var. Weissi, nov., Santschi, 1910c: 376, worker; Santschi, 1916b: 500, queen) from Congo, collected at Gomba, by A. Weiss - see http://www.antweb.org/specimenImages.do?code=casent0912821
junior synonyms (Bolton, 1995: 165)
boxi (Crematogaster (Sphaerocrema) boxi sp. n., Donisthorpe, 1945a: 10, worker) from Ghana, collector H.E. Box - see below
dewasi (Sphaerocrema dewasi, Miré, 1966: 240, illustrated, worker; unavailable on HNS) from Cameroun - no images on Antweb (January 2015)
retusa (Crematogaster Welmani For. stirps retusa, n. stirps, Santschi, 1916b: 500, all forms) from Zimbabwe, Victoria Falls, G Arnold - no images on Antweb (January 2015)
All forms described (see Bolton, 1995) .


{Crematogaster wellmani retusa}Forel's (1909b) description is at {original description}. Forel (1917: 252) noted that what he noted as the possible queen was a different species which he (1917) denoted as Crematogaster (Cr.) ancipitula. Forel (1913b: 325) simply noted - "Emery (1899e: 480) attributed a queen [from Cameroun] to concava but that was wrong. The true concava queen was found by Weiss and had the normal head shape of that species. Thus, I propose the name luciae n sp for the Emery form, which appears to belong to the subgenus Atopogyne".Santschi's (1910c) description of weissi is at {original description}. Santschi's (1916b) description of retusa and thoughts on the species is at {original description}. Arnold (1920a: 545) gave an illustrated translation of retusa, this is at {original description} and {original description}. Santschi (1926b: 218) had an illustrated summary of the species and its varieties; this is at {original description}. Donisthorpe's (1945a) description of boxi is at {original description}.


Forel's (1909b) description (my translation) is -
TL 3-4 mm; head square, slightly longer than wide, and at least as wide anteriorly as posteriorly, sides slightly convex, strongly impressed posteriorly. Mandibles striated and puncturated. Scapes reaching posterior fifth of head in majors, the posterior sixth in minors. Eyes flat, a little angular, set in the middle of the sides. Antenna 11-segmented, club three-segmented; funiculus segments 3-5 longer than wide. Pronotum with an anterior declivity passing through an abrupt curve to the short posterior dorsum, the latter near horizontal and on the same level as the mesonotum; promesonotal suture distinct. The mesonotum rises anteriorly, specially in the majors, in the form of a beak, or obtuse point, but not greatly and without forming a carina. Behind this raised portion is a feeble transverse impression. Metanotal groove, straight, abrupt and deep, a little like goeldii (from Brazil). Propodeum with two large, obtuse tubercles in the place of spines; declivity a little longer than wide, narrowing slightly posteriorly, with the anterior border mildly arcuate, sometimes angular. Postpetiole slightly wider than long, same size as the petiole, without any trace of a median impression, but scalloped or strongly impressed behind. Smooth and very shiny. Gaster partially very feebly shagreened. Clypeus and genae partially finely striated and subopaque, with some very fine reticulation. Without erect hairs. Pubescence very fine, short and sparse overall, more abundant on tibiae and scapes
Colour slightly rust-red; gaster brown black; legs and antennae brown; in some cases pedicel, thorax and even the head darker red-brown.
Collected on trees in Benguela by Creighton Wellman. Forel also briefly described a female, TL 7-7.5, but was not sure it was the same species and later (Forel, 1917) classified it somewhat hesitantly as Crematogaster (Cr.) ancipitula.


{Crematogaster wellmani} Nigeria specimens (as Crematogaster boxi, Taylor, 1979: 35) - WORKER Size variable TL 3.00-5.13 mm; largest HL 1.49, HW 1.40, SL 0.87, PW 0.78
Colour orange on head darkening posteriorly to the gaster which is black, shiny. Dense pilosity, few erect hairs. Lateral propodeum striated. Alitrunk profile angular flat on mesonotum and propodeum. Metanotal groove deeply impressed. Propodeal spines reduced to low tubercles. Subpetiolar spine small and blunt.

Wheeler (1922) had the typical form (under Atopogyne) from Nigeria (Old Calabar), Angola and Congo (Brazzaville, by A. Weiss); also luciae from Cameroun (by Conradt).

Not very common in Nigeria. Builds carton nests in dead wood on forest trees and will forage on cocoa. Tends Homoptera.

The specimens from Ghana, described as Crematogaster (Sphaerocrema) boxi by Donisthorpe (1945a, b) were collected by H.E. Box (5.v.1944) at N. Ashanti, 30 km north of Wenchi, 8 workers with a Pseudococcus species in pods of Sterculia tomentosa. Donisthorpe, whose description matches the illustrated specimen, wrote of it as allied to the wellmani group, thus surely thought the specimens different from the wellmani as described by Forel. Room (1971) reported it (as boxi) in 5 of his 168 canopy samples at cocoa farms; and described it as a dominant on the trees it occupied. A single worker was found on cocoa at Kade by Majer (1975, 1976b), using pkd. Strickland (1948, 1951a) reported it as in the subgenus Sphaerocrema.

In Cameroun, de Miré (1966) described its activities on Robusta coffee in the east of the country.


{Crematogaster wellmani}The photomontage of the holotype worker is collated from http://www.antweb.org/specimen.do?name=casent0908564.


Oxford University Museum specimens

Crematogaster (Sphaerocrema) wellmani boxi
B Taylor det.
Ivory Coast
Erena Dupont
iv.2014
Taï National Park
5˚45'00" N
7˚07'00" W
11
2
{album}
Crematogaster (Sphaerocrema) wellmani boxi
B Taylor det.
Ivory Coast
Erena Dupont
v.2014
Taï National Park
5˚45'00" N
7˚07'00" W
16
1
{album}
Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Cameroun
A Fotso Kuate
Crematogaster sp9

17.vii.2007
Awae II
03°54'30" N
11°25'58" E
Quadrat in fallow 1
{album}
Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Queen
Central African Republic
P Annoyer
DA

12.i.2005
Dzanga-Sangha
04°22’19.4" N
18°35’49.7" E
360m; U.V : 19h-7h, Bangui, après la corniche
1
{album}
Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Central African Republic
P Annoyer
DN-02

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 (Sphaerocrema) wellmani
B Taylor det.
Central African Republic
P Annoyer
DT

27.i.2005
Dzanga-Sangha
02°48'20.5" N
16°06'14.0" E
350 m; Camp 1; U.V :
20h30-2h30 sur plateforme à 45m du sol dans un Aningré (Aningeria altissima, Sapotaceae)
1

Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Central African Republic
P Annoyer
EY-03

07.ii.2005
Dzanga-Sangha
02°50’01.8" N
16°08’13.7" E
Camp 3; Fauchage, 14h, dans petite saline à proximité du camp; 375m asl
1

Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Central African Republic
P Annoyer
GN-04
23.ii.2005
Dzanga-Sangha
02°55’04.8" N
16°10’09.7" E
U.V : 21h-6h30,
à 38m du sol dans un Ayous (Triplochiton scleroxylon, Sterculariaceae); 450 m asl
3
{album}
Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Male
Central African Republic
P Annoyer
GS

26.ii.2005
Dzanga-Sangha
02°55'05.6" N
16°10'11.4" E
Camp 6; 9h-6h; ;
Sur plate-forme à 38 m du sol dans un Ayous (Triplochiton scleroxylon, Sterculiaceae)
1
{album}
Crematogaster (Sphaerocrema) wellmani
B Taylor det.
Queen
Central African Republic
P Annoyer
HI

06.x.2008
Dzanga-Sangha
04°22'19.4" N
18°35'49.7" E
360 m; Camp 1; Nuit; Bangui après la corniche direction N'garagba
1
{album}
Crematogaster (Atopogyne) mottazi
B Taylor det.


Central African Republic
P Annoyer
GN 05

23.ii.2005
Dzanga-Sangha
02°55’04.8" N
16°10’09.7" E
Camp 6; 450m environ; U.V : 21h-6h30, à 38m du sol dans un Ayous (Triplochiton scleroxylon, Sterculariaceae)


1
{album}
Crematogaster (Atopogyne) mottazi
B Taylor det.
Queen

Congo
Y Braet


7.x.2007
Dzio-Dzio
3°29'33" S
15°18'33" E
Ngabe, Région de Pool
collected by sweep netting (fauchage)

3
{album}

{Crematogaster wellmani}The photomontage is of a worker from the Central African Republic; Dzanga-Sangha National Park; collector Philippe Annoyer (CAR DN).


{Crematogaster mottazi}The photomontage is of a worker from the Central African Republic, Dzanga-Sangha NP; Camp 6; collector Philippe Annoyer (CAR GN).


{Crematogaster mottazi}The photomontage is of  workers from Congo, Dzio-Dzio, Ngabe, Région de Pool; collector Yves Braet.


{Crematogaster wellmani}The photomontage is of a damaged worker from Cameroun, Awae II; collector A Fotso Kuate (fk sp 9).


{Crematogaster wellmani queen}The photomontage is of a queen from the Central African Republic, Dzanga-Sangha NP; collector Philippe Annoyer (CAR IH).


{Crematogaster wellmani male}The photomontage is of a male from the Central African Republic, Dzanga-Sangha NP; collector Philippe Annoyer (CAR GS1).


boxi form

{Crematogaster boxi}The photomontage of the holotype worker of boxi is collated from http://www.antweb.org/specimen.do?name=casent0902058.

The very different colouration compared with the fresh specimens shown below, all of which match the wellmani type description, suggests this may be a separate species.


Crematogaster wellmanni boxiThe photomontage is of a worker from Ivory Coast; Tai National Park; collector Erena Dupont, iv.2014.

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

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