opacum-complex
Type location Zaïre (Monomorium opacum n. sp., Forel, 1913b: 87, worker) Shinsenda, Katanga, Dr Bequaert .
Forel's (1913b) description is at . Bolton's modern description (1987) is at .
WORKER - TL 3.3-3.5 mm (Bolton, 1987: 353, not illustrated).
The photomontage of the type worker is collated from http://www.antweb.org/specimen.do?name=casent0908734
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