Pyataeva, S.V., Hopcroft, R.R., Lindsay, D.J. and Collins, A.G. 2016. DNA barcodes unite two problematic taxa: the meiobenthic Boreohydra simplex is a life-cycle stage of Plotocnide borealis (Hydrozoa: Aplanulata). Zootaxa. 4150, 1 (Aug. 2016), 85–92. DOI:https://doi.org/10.11646/zootaxa.4150.1.5.