Dorylus (Anomma) emeryi Mayr
Type locality Cameroun (Mayr, 1896: 225, all worker
morphs; collector Y. Sjöstedt); subspecies pulsi (Forel,
1904d: 170, worker; Santschi, 1923e: 176, major) from "West
Africa"; workers only known (see Bolton, 1995; may be in
Raignier & van Boven, 1955)
.
Mayr's (1896) description is at
and .
Emery's (1901d) description of pulsi is at
.
Santschi's (1923e) description of the soldier of pulsi,
from Aburi, Ghana, collector F Silvestri, is at
.
|
From
Raignier & van Boven (1955), Mayr's original description made
comparison with nigricans, syn. rubellus. Raignier
& van Boven considered this unfortunate as the closer
comparison would be with gerstaeckeri; emeryi
being bigger TL 12.7 mm; head rectangular, slightly longer than
wide, and slightly more than 1/3 of TL (in gerstaeckeri it
is slightly less than 1/3); posterior border of head deeply
scalloped; scape more slender than nigricans and not
reaching mid-length of head; petiole a little longer than wide
(Santschi, 1912b); colour red-brown; most of head shiny, the
vertex strongly so, with sparse puncturation; body semi-matt, legs
shiny. The variety pulsi of Forel (1904) was described
solely from media morphs and so has no merit.
Wheeler (1922) listed findings from Ghana (Aburi, by F.
Silvestri); Cameroun (Mundame, by Conradt) and Zaire
(by Kohl); pulsi was solely from "West Africa". |
Nigeria specimens (Dorylus (Anomma) species in wilverthi group, Taylor, 1978b: 13). WORKERS. TL 10.13-4.18 mm; ; at
least four morphs; largest HL 3.47, HW 1.41, SL 1.14, PW 1.14,
petiole length 0.87. Humle specimens larger - major TL 14 mm, and
six morphs separable.
Colour red-brown. Sculpturation of fine dense puncturation. Erect
hairs relatively abundant on gaster, petiole and on dorsum of
propodeum. Head widest at mid-length, pronounced domed
dorsolateral posterior prominences or tubercles. Antennal scape
gradually thickening to a broad apex. Mandibles with a long apical
tooth subtended by a denticulate margin running to a basal
triangular tooth; numerous hairs on the inner margin. Antennal
scapes short and thick, funiculus segments beadlike. Subpetiolar
process is a blunt rear-curved triangle. All morphs of similar
appearance, progressively lighter as size diminishes, smallest
yellow-brown, tubercles on head visible on all except the smallest.
The specimens in the museum at the Cocoa Research Institute of Nigeria, Idi Ayunre, were not
fully labelled but probably were collected by R.H. Booker at CRIN
or Ibadan (Moor Plantation?). |
The photomontage is collated from
http://www.antweb.org/specimen.do?name=casent0172655&shot=p1&project=null
and is of a specimen from Ivory Coast, collected by Caspar
Schoning. |
|