Zettel, H. “The Type of the Enigmatic Creeping Water Bug Naucoris Sumatranus FIEBER, 1851 (Hemiptera: Heteroptera: Naucoridae)”. Zootaxa, vol. 2981, no. 1, Aug. 2011, pp. 65–68, doi:10.11646/zootaxa.2981.1.7.