Crematogaster (Sphaerocrema) concava Emery
  Type location Zaïre
(Crematogaster concava n. sp.,
Emery, 1899e: 480, queen & worker; Santschi, 1910c: 376, queen
& male;
type loc. Cameroun in Bolton, 1995) - see below
All forms described  .
|
 Emery's (1899e)
description is at  . He did not designate a type location but
recorded specimens from Cameroun, Congo (Popocabacca,
Kinshasa) and Sierra Leone. Santschi's (1910c) description of
the male & queen is at  , from Congo,
Brazzaville, A Weiss. Santschi stated his queen description was
"non Emery, 1899" - giving the head as wider than long. As several Sphaerocrema
species have queens with distinctive rectangular heads that are about
25% longer than wide and, as it appears neither Emery nor Santschi had
definitely associated workers and queens, the question remains
unsolved.
|
 Karavaiev
(1931d) gave an illustrated description of specimens from Naivasha, Kenya;
this is at  .
From the descriptions and images, it seems likely that Crematogaster
(Sphaerocrema) lotti Weber (1943c), from the Lotti Forest,
Imatong Mountains, Sudan, should be reduced to a junior synonym
of concava.
Wheeler (1922) listed it from Cameroun, and both
Congos; he gave an illustration (dorsal view) and
commented on it as being found in twigs of Barteria fistulosa,
the pronotal dorsum is distinctly concave, and the head near square in
dorsal view. Forel (1915c) noted it as collected at St. Gabriel,
Kisangani, Zaïre, on a tree, by Kohl. Later, Forel (1916) reported
taken several times at St Gabriel in termite nests [not noted as
terrestrial or arboreal] at the top of conical branches of the nests.
Also sent to him by Prof. Wasmann.
Santschi (1935) noted a specimen from Luebo, Zaïre,
collected by Dr Schouteden, 19.x.1920.
|
 The
photomontage of a worker from the type collection is collated from http://www.antweb.org/specimen.do?name=casent0904478.
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Oxford University Museum
specimens
Crematogaster (Sphaerocrema) concava
B Taylor det. |
Congo
E Zassi
02-t-1-1
|
8-9.xi.2007
Lésio-Louna
03°16'13.9" S
015°28'21.2" E
|
Gallery Forest; 24h
pitfall trap |
1
|
 |
Crematogaster (Sphaerocrema) concava
B Taylor det. |
Cameroun
A Fotso Kuate
Crematogaster sp11
|
25.iii.2008
Awae II
03°54'30" N
11°25'58" E
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Tuna bait in fallow
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1
|
|
|
 The
photomontage is of a worker from Congo, Réserve de Lésio-Louna;
collector Eric Zassi, 02-t-1-1 (Crematogaster sp3).
|
 The
photomontage is of a worker from Cameroun,
Awae II; collector A Fotso Kuate (fk sp 11).
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