Unionicola (Wilsonatax) poirrieri Vidrine, 1984

Report associated with sponges: This species was reported associated with sponges Trochospongilla leidii (cited as Trochospongilla leidyi) from Louisiana, USA (Vidrine 1984, 1996; Edwards & Vidrine 2013).

Remarks: Holotype (male) was reared from encysted tritonymphs in the tissues of the sponge, Trochospongilla leidii from Bayou Peyronnet, Louisiana, USA (Vidrine 1996). This was also reported from Long Pine Creek, Loch Lomond, Cypress Hills Provincial Park, Saskatchewan in Canada (Vidrine 1984); no sponge host was recorded for the Canadian specimens (Vidrine 1996).