Pheidole stephensi Taylor new species
Type location Nigeria .
DESCRIPTION: Appears to be completely unique in having the
frontal carinae excavated so as to expose the base of the scape and the
torus, also in having quite distinct antennal scrobes; clypeus with a distinct median carina; the scape itself
has a well developed basal expansion or flange; scapes and frontal
carinae reaching three-quarter point of face; antennal scrobes while
superficial quite distinct; underside of head smooth, hypostomal teeth
armature with a single strong median tooth; alitrunk with transverse
propodeum with sharp lateral margination and quite deeply
longitudinally concave; with large distinctive propodeal spiracle;
postpetiole from above smoothly ovoid; with faint rugae on the anterior
dorsum of the head; other sculpturation restricted to
weak spiculation on the lateral mesonotum and propodeum; erect hairs
relatively long, fine and moderately
abundant. colour yellow-brown, gaster darker.
TL 3.42 mm, HL 1.18, HW 1.12, SL 0.70, PW 0.50;
MINOR DESCRIPTION: Head evenly ovoid; mandibles
relatively long and distinctly crossed over when closed; propodeal
spines narrow, acute, upturned and
triangular; also the propodeal spiracle relatively large and
prominent; postpetiole small and globular; sculpturation on head solely
faint short rugae on the genae, otherwise restricted to
spiculation of lateral mesonotum and propodeum
TL 2.24 mm, HL 0.59, HW 0.50, SL 0.72, PW 0.34
Distribution - Ghana eastwards to Gabon. Named in
recognition of one of the collectors, Dr S Sky Stephens.
Nigeria specimens deposited with the Natural History
Museum, London; others in the Oxford University Museum of Natural
In general form and appearnce similar to Pheidole decarinata but that has only short frontal carinae or scrobe and no median carina on the clypeus.