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: Primary type material: holotype worker. Primary type locality: Argentina: Sued-Cordillere, Hua Hum, xii.1947 (Hayward & Willink). Primary type depository: MZSP. Type notes: 1) Bolton says that the holotype is in IMLT or MZSP. 2) Holotype is in MZSP (Ulysséa et al., 2025: 9).
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