Ankylomyrma coronacantha Bolton
Type location Ghana
(Bolton, 1972: 234, 1981b: 247, illustrated, full-face view and whole
body profile, worker) - the type worker with detached head can be seen at https://www.antweb.org/specimenImages.do?code=casent0902013 .
description is at .
and expanded at .
WORKER - TL 6.3-6.8 mm; head with a remarkable 'crown'
across dorsal margin; gaster massively enlarged, with an extremely
vaulted first tergite; colour black, with lighter orange-brown to
Types collected by pkd (D. Leston, 12.vii.1969) in the
primary forest at Mt. Atewa (Atewa Forest Reserve) (Bolton, 1972). A
specimen from "Gabon" is pictured in Hölldobler & Wilson (1990,
page 98), as this was attributed to Bolton (1981b) the country label is
most likely to have been Ghana.
In the later paper, Bolton added a finding from Cameroun,
at Korup (D.A. Jackson), and described the species as large and
spectacular. It was known to be arboreal but nothing else was known of
The Antweb page has images of the holotype, plus of workers from Cameroun (Korup, D A Jackson), Gabon (B L Fisher, see below), Ghana (Atewa, L Alonso) and Central African Republic (Dzangha-Sangha, B L Fisher).