Monomorium bidentatum piceonigrum Borgmeier, 1948 junior synonym of current valid taxon Monomorium bidentatum Mayr, 1887
Monomorium (Notomyrmex) bidentatum subsp. piceonigrum Borgmeier, 1948b: 468, figs. 16, 17 (w.) ARGENTINA (Neuquén). Neotropic.
Primary type information: Type-material: holotype worker. Type-locality: Argentina: Sued-Cordillere, Hua Hum, xii.1947 (Hayward & Willink). Type-depository: IMLT, or MZSP.
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