Monomorium opacior Forel

Type location Zimbabwe (Monomorium Salomonis r. Junodi For. v. opacior n.v., Forel, 1913a: 136, worker; Forel, 1913j: 216, in text; Arnold, 1916: 220, queen) - see below
unavailable name serenum (Monomorium (Xeromyrmex) delagoense stirps junodi v. serenum n. vsar., Santschi, 1928f, all forms - see http://www.antweb.org/specimenImages.do?code=casent0913827

All forms described (see Bolton, 1995) .

Forel's (1913a) description is at . Arnold (1916: 220) gave a translation plus that of the queen, this is at . Note - Arnold (1916) gave what appears to be a wrong size for the worker. Santschi's (1928f) description of serenum is at . Bolton's modern description (1987) is at .

WORKER - TL 2.2-2.4 mm (Bolton, 1987: 352, not illustrated).

The photomontage is of the type worker collated from http://www.antweb.org/specimen.do?name=casent0902215
Notes TL = ca 2.5 mm; there is no sign on this, on that below, nor on the serenum worker, of the "two pairs of standing hairs" on the dorsum of the head, mentioned by Bolton (1987).

The photomontage is of a syntype worker collated from http://www.antweb.org/specimen.do?name=casent0902215