Phylogenetic analyses show that the meiobenthic Boreohydra simplex is a life-cycle stage of Plotocnide borealis (Hydrozoa: Aplanulata).

Supplemental Figures from Pyataeva et al. 2016. DNA barcodes unite two problematic taxa: the meiobenthic Boreohydra simplex is a life-cycle stage of Plotocnide borealis (Hydrozoa: Aplanulata). Zootaxa.
Figure S1.
Neighbor joining topology for 16S sequences derived from samples of Plotocnide borealis (n=4) and Boreohydra simplex (n=4), along with all
(n=1948) publicly available 16S sequences from exemplars of Hydroidolina in
Genbank. Protohydra and Plotocnide/Boreohyra samples are found
on page 6 of 27 and highlighted in yellow. The topology shows these taxa
diverging near the base of a clade containing all sampled members of
Aplanulata.

Figure S2.
Neighbor joining topology for COI sequences derived from samples of Plotocnide borealis (n=4) and Boreohydra simplex (n=5), along with all
(n=1614) publicly available COI sequences from exemplars of Hydroidolina in
Genbank. Protohydra samples are found
on page 3 of 32, and highlighted in yellow, branching among exemplars of
Aplanulata, which do not form a clade in the NJ topology.  Plotocnide/Boreohyra
samples are highlighted in yellow and found united with COI sequences derived
from another putative member of Aplanulata, Margelopsis
on page 26 of 32.

Figure S3.
Maximum likelihood topology for 18S sequences derived from samples of Plotocnide borealis (n=2) and Boreohydra simplex (n=2), along with all
(n=519) publicly available 18S sequences from exemplars of Hydroidolina in Genbank.
Protohydra and Plotocnide/Boreohyra samples are found on page 10 of 18, branching
near and at, respectively, the clade including all exemplars of Aplanulata.

Figure S4. Consensus
of 420 bootstrap maximum likelihood analyses of 18S sequences derived from
samples of Plotocnide borealis (n=2)
and Boreohydra simplex (n=2), along
with all (n=519) publicly available 18S sequences from exemplars of
Hydroidolina in Genbank. Protohydra
and Plotocnide/Boreohyra samples are
found on pages 8 and 9 of 18, branching near and at, respectively, the clade
including all exemplars of Aplanulata.