Background Most previous research of morphological and molecular data have consistently supported the monophyly of the true water insects (Hemiptera: Nepomorpha). reanalysis suggests that the lack of support for the monophyly of the true water insects (including Pleoidea) by Hua et al. (BMC Evol Biol 9: 134, 2009) likely resulted from inadequate taxon sampling. In… Continue reading Background Most previous research of morphological and molecular data have consistently