Hi guys! I don't know if you Mantis buffs know about this, but there are Odontodactylus havanensis for sale at Sealifeinc.net. Ignore this if you already knew it. This is the place I got my wernnerae as a hitch hiker in LR. Ken is really great about customer service and I bet he would be willing to sell other species if he ran into them while diving.
http://sealifeinc.net/catalog/index.php?cPath=31
http://sealifeinc.net/catalog/index.php?cPath=31