Crematogaster (Atopogyne) biimpressa Mayr - new status

Type location Congo (Cremastogaster Buchneri For. subspec. biimpressa nov. subsp., Mayr, 1895: 139, worker; stirps of clariventris, Santschi, 1930b: 69) from Kuilu River - see below
junior synonyms (here)
v-nigra (Cremastogaster chiarinii Em. var. V. nigrum n.var., Forel, 1910e: 434, worker - NOTE the "nigra", Forel, 1910e: 434, worker, in Bolton, 1995: 158, is an error) from Congo, no location or collector - see below
transiens (Cremastogaster Buchneri For. r. transiens n. stirps, Forel, 1913b: 324, worker; raised to species by Santschi, in litt., in Wheeler, 1922: 160) from Zaïre, Kana near Kikondja by J. Bequaert - see below

Mayr's (1895) description, with that of clariventris, is at .
Forel's (1910e) description of v-nigra is at .

Forel's (1913b) description of transiens is at . Noted as smaller than buchneri by Santschi (1915c), recording it from Kataki, Katanga, Zaïre, by Dr Gerard; also recorded by Wheeler (1922) plus Avakubi and Kisangani [Stanleyville], by Lang & Chapin.

The photomontage of the holotype worker is collated from http://www.antweb.org/specimen.do?name=casent0919665.

The photomontage of the v-nigra type worker is collated from http://www.antweb.org/specimen.do?name=casent0908515.

The photomontage of the holotype worker of transiens is collated from http://www.antweb.org/specimen.do?name=casent0904472.

Oxford University Museum specimens

Crematogaster (Atopogyne) v-nigra B Taylor det.

Cameroun G Debout & A Dalecky Cameroon 70a

18.iv.2001 BOU 3°13.31' N 10°15.01' E

at nectaries of Alchorea floribunda, apparently with numerous Crematogaster striatula

2

Crematogaster (Atopogyne) species 1 (Cameroon)

In the Campo forest canopy, Alain Dejean and colleagues recorded a species denoted by Bolton as "Crematogaster sp l" on 1.8% of the trees. I guess that this has to be an Atopogyne subgenus member; why Bolton did not give some positive separation when, as here, the "species 1" etc has been used for other Crematogaster forms, I cannot understand. I am tempted to guess that this is transiens.

The photomontages are of specimens collected in Cameroun - south-western tropical coastal forest area between Edéa and Campo (McKey Wolbachia project) - Cameroon 70a from location BOU (Bondé - river near N'kolobondé at 3°13.31' N 10°15.01'; flat land, between the Chapel and the river), 18 April 2001, at nectaries of Alchorea floribunda, apparently with numerous Crematogaster striatula. 

Major worker

need to check size - rephoto!

Minor worker