Fig. 6
(photo © Kenji Imai, Japan)
Mating between Eumandya cf. parva (Gustavo Sanchez det.) in the field (female to the left). Male’s arms I are inserted in the female’s mantle cavity, as shown by the mantle bulging; arms II embrace the female’s mantle and extend dorsally above the female’s fins; arms III embrace the female’s neck and join with each other slightly above the female’s head; the proximal part of arms IV are attached to the female’s head, the distal part is free. Okinawa (Japan), off Cape Kyan, time: 10 pm