The Ants of Africa
Genus Pheidole
Pheidole nigritella Bernard

termitophila group - Major - head longer than wide by at least 25%; mandibles very stout with dentate border and distinct apical teeth; clypeus with at least a shallow central notch; postpetiole with distinct lateral prominences; minor head square; major and minor with relatively swollen three-segmented club

Pheidole nigritella Bernard

return to key {link to the Hymenoptera Name Server} Type location Guinea (Bernard, 1952, illustrated) from Mt. Nimba, 3 majors and 9 minors, from three forest locations; Ziéla, F 80 Gouéla, B8-10 Zouépo, 1215 m (Lamotte); major & minor described (see Bolton, 1995) .


{Pheidole nigritella}Bernard's (1952) description is at {original description}. This translated is -
MAJOR - TL 3.6-3.8 mm, HL 1.5, HW 1.15; head and thorax pitch brown, often black posteriorly, petiole and gaster pure black, shiny. Head matt, finely and entirely recticulo-striated, with fine reticulation between the striations. Thorax and abdomen smooth. Fine yellow hairs common on the head and body. Appendages yellow-brown, short and thick, save the antennae which are slender by comparison with related species. Head parallel sided, slightly enlarged posteriorly. Clypeus straight, brown, puncturated, a little concave anteriorly but frontal area without a median carina. Frontal groove well developed large on the posterior part. Antennae slender, segments longer than wide. Mandibles brown, finely and regularly striated. In profile, prothorax very convex, metanotal groove very wide. Petiole small and elevated. Postpetiole shiny, finely puncturated, slightly wider than long. Head illustrated in scanned photocopy of photo (left).

{Pheidole nigritella}MINOR - TL 2.0-2.1 mm; black, very shiny, puncturation fine and serrated, appendages brown. Head slightly longer than wide, very rounded posteriorly; occiput is straight, bordered and wide. Antennae slender, in the funiculus segments 2 and 3 are equal, three times longer than wide, segment 4 twice as long as wide. Prothorax as convex as the soldier; propodeum puncturate except on anterior third. Petiole slender, node less elevated than that of the soldier. Postpetiole as the soldier. All body parts are more elongated than those of the other minute Pheidole in the termitophila group (after Bernard, 1952).

Bernard (1952) described this as the only black species among the minute Pheidole of Africa, other than Ph. capensis from southern areas.


{Pheidole nigritella major}The photomontage of the type major worker is collated from http://www.antweb.org/specimen.do?name=casent0915441.


{Pheidole nigritella minor}The photomontage of the type minor worker is collated from http://www.antweb.org/specimen.do?name=casent0913735.


Specimens in OUMNH Collection

Pheidole nigritella
B Taylor det.
Liberia
E Poirier
Yekepa
PF 19
29.iii.2013
Nimba County
07°33’38" N
08°32’33" E
Pitfall trap
Degraded secondary forest
518 m asl
minor
2
{album}
Pheidole nigritella
B Taylor det.
Liberia
E Poirier
Yekepa Camp 4
PF 4
6.iv.2013
Nimba County
07°33’04" N
08°33’17" E
Pitfall trap
Floodplain & marsh
501 m asl
minor
2
{album}
Pheidole nigritella
B Taylor det.
Liberia
E Poirier
Yekepa Camp 4
PF 14
6.iv.2013
Nimba County
07°33’04" N
08°33’17" E
Pitfall trap
Floodplain & marsh
501 m asl
minor
1
{album}
Pheidole nigritella
B Taylor det.
Ghana
S Sky Stephens
06G0073
2006
In personal collection of S Sky Stephens
1
{album}
Pheidole nigritella
B Taylor det.
Ghana
S Sky Stephens
06G0075
2006
In personal collection of S Sky Stephens
1
{album}
Pheidole nigritella
B Taylor det.
Benin
J-F Vayssieres
RVA 2918
17.ix.2012
Korobourou
09°22'13'' N
02°40'16'' E
Mangifera indica orchard
Quadrat  1, tube 1, variété: Ifac
Ground nesting (nuit)
Minor workers
2
{album}

{Pheidole nigritella minor}The photomontage is of a worker from Liberia, Yekepa Camp 4; collector E Poiriet (Yekepa Camp 4 PF 14). Collection area within the Mt Nimba range.


{Pheidole nigritella minor}The photomontage is of a worker from Benin, Korobouro; collector J-F Vayssieres (RVA 2918).


{Pheidole nigritella minor}The photomontage is of a worker from Ghana, collected by Sky Stephens (06G0075).

Contents
© 2007, 2008, 2009, 2010, 2011, 2013, 2014 - Brian Taylor CBiol FSB FRES
11, Grazingfield, Wilford, Nottingham, NG11 7FN, U.K.

href="pheidole_nigritella.htm"