Strumigenys cacaoensis Bolton
Nigeria (Bolton, 1971a: 59, illustrated, worker &
queen; 1983: 367, illustrated, full-face view), collected at the Cocoa
Research Institute of Nigeria, Idi Ayunre, by Bolton in the nest, in a
shallow rot-hole in the trunk of a cocoa tree, from which he described
the holotype - see below .
Nigeria specimen (Taylor,
1979: 49). WORKER. TL 2.7 mm, HL 0.83, HW 0.72, SL 0.45.
Head massive with a well developed preocular notch through both
dorsolateral and ventrolateral borders. Mandibles with two small
preapical; teeth, the ventral apical tooth shorter than the dorsal
tooth. Head, alitrunk and pedicel overall finely and densely punctate,
coarser on the head. Gaster dully shining. Erect clavate hairs sparse
except on the gaster. Head with numerous, small, adpressed spatulate
teeth. Spongiform appendages of the pedicel very much reduced. Specimen
in CRIN collection from the type series.
In Ghana, Bolton collected
several specimens from the stub of a rotten cocoa branch at CRIG, and
reported that A.B.S. King thought it occurred in 2-3 of every 1000 pkd
samples at CRIG (Bolton, 1971a). Later, a single worker was found in
cocoa at Kade by Majer (1975, 1976b), using pkd. Bolton (1983) added
collections from CRIG (D. Leston; C.A. Collingwood).
Clearly an arboreal species.