The Ants of Africa
Genus Pheidole
Pheidole rohani Santschi

capensis-group - major postpetiole much wider than long, with elongated lateral processes, head widest posteriorly

Pheidole rohani Santschi

return to key {link to the Hymenoptera Name Server} Type location Angola (Pheidole Rohani n. sp., Santschi, 1925h: 160, illustrated, minor; Santschi, 1930b: 62, major) minor from between "Kapalongo and Dongo, December 1912" - see below; major from Cakunda (label has "Cakinda, Monard, 1925") - see below.
subspecies
monardi (Pheidole monardi n. sp., Santschi, 1930b: 65, illustrated, minor; stirps Santschi, 1937d: 219) from Angola, Rio Mbalé, Monard, 10 workers - see below.
pellax (Pheidole rohani Sants. st. pellax, n. stirps, Santschi, 1930b: 63, illustrated, major & minor) from Angola, Rio Mbalé, Monard - see below.
major & minor described (see Bolton, 1995) .


{Pheidole rohani}Santschi's (1925h) description is at {original description}. Santschi's (1930b) description, is at {original description}; with monardi and pellax at {original description} and {original description}. The reduction of monardi from species to "stirps" or subspecies by Santschi (1937d, he uses both in the same sentence) is accompanied by the note that monardi is a little bigger and the head more reticulate behind.

Notes:

1. The three type minor workers shown below appear almost identical, with no obviously significant characters on which to separate them. Santschi (1930b, separated the pellax minor as having a slightly narrower head than the rohani minor. Although the location was the same, he made no comparisons between the pellax and monardi minors.

2. I doubt strongly that the major worker shown below (CASENT0913423) and currently bearing the label as the rohani type is the correct major. From Santschi (1930b), the head shape, and the open mandible in his drawing does not match the specimen, neither, most tellingly does the shape of the postpetiole, which is his drawing is like that of the pellax major, i.e.  elliptical without elongated sides. Santschi gave the size as ranging from TL 7 to 9 mm.  Santschi's notes drew attention to the similarity with Pheidole excellens. The CASENT0913423 major is almost identical, apart from colour pattern, with the major of P. excellens fulvobasalis (CASENT0913306); at present the Mayr type of excellens is not available on Antweb. The minors of rohani and excellens are readily separated, not least by the spiculate sculpture on the head of the latter.


Pheidole pellax majorThe photomontage of the pellax type major worker is collated from http://www.antweb.org/specimen.do?name=casent0913426.

As the minor of pellax is identical to the rohani type minor. I feel this represents the true major of the species.


{Pheidole rohani minorThe photomontage of a type minor worker is collated from http://www.antweb.org/specimen.do?name=casent0913424.


{Pheidole pellax minorThe photomontage of the pellax type minor worker is collated from http://www.antweb.org/specimen.do?name=casent0913427.


{Pheidole pellax minorThe photomontage of the monardi type minor worker is collated from http://www.antweb.org/specimen.do?name=casent0913427.


Pheidole rohani majorThe photomontage of the "rohani" type major worker is collated from http://www.antweb.org/specimen.do?name=casent0913423. Probabaly a specimens of Pheidole excellens.


Oxford University Museum specimens

Pheidole rohani
B Taylor det.
Benin
J-F Vayssieres
RVA 3075.3
13.iii.2013
Koro
09°22'21'' N
02°40'13'' E
Mangifera indica orchard
prey of Oecophylla longinoda
1600-1700 h
minor
1
{album}
Pheidole rohani
B Taylor det.

Congo
Y Braet
t-1-15

19.viii.2007
Brazzaville
4° 15' 33" S
15° 17' 5" E
24h pitfall trap; forest around the GERDIB laboratories; 317 m asl 1
{album}
Pheidole rohani
B Taylor det.

Congo
Y Braet
t-1-16

19.viii.2007
Brazzaville
4° 15' 33" S
15° 17' 5" E
24h pitfall trap; forest around the GERDIB laboratories; 317 m asl
(three traps)
1
{album}
Pheidole rohani
B Taylor det.
Congo
E Zassi
09-t-3
23-24.xi.2002
Lésio-Louna
03°27'80.4" S
015°46'54.5" E
Wooded Savannah; 24h pitfall trap
1
{album}
Pheidole rohani
B Taylor det.
Central African Republic
P Annoyer
MV
21.xi.2010
Dzanga-Sangha
2°28'49.5"N
16°12'55.9"E
392 m; nuit, UV, Azobé, Canopée, 45 m, 18h30 - 5h30, orages alentours
1
{album}

{Pheidole rohani}The photomontage is of a minor specimen from Congo, Brazzaville; collectors Yves Braet & Eric Zassi (t-1-16).


{Pheidole rohani pellax}The photomontage is of a minor specimen from Congo, Brazzaville; collectors Yves Braet & Eric Zassi (t-1-15).

This appears to match the "variety" pellax and to differ quite significantly from the type, notably in being much smaller, which matches the Santschi statement of size.


{Pheidole rohani}The photomontage is of a worker from Central African Republic, Dzangha-Sanga; collector Philippe Annoyer (CAR MV).

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© 2007, 2008, 2010, 2013, 2014 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.

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