Menard, K. L. (2015).

A review of the genus Spanagonicus Berg (Hemiptera: Miridae: Phylinae: Nasocorini) with the description of novel antennal characters, the description of a new species from Central America, and a key to currently known taxa

. Zootaxa, 3973(1), 139–158. https://doi.org/10.11646/zootaxa.3973.1.5