First abdominal appendage (pleopod) modified for sperm transfer in malacosatracans [Brusca and Brusca, 2002].
Modified male pleopod serving for transmittal of spermatophores to female [Moore and McCormick, 1969].
Pleopod in male modified for reproductive purposes [Hobbs and Jass, 1988].
Pleopod modified for reproductive purposes [McLaughlin, 1980].
(Order Decapoda):
Modified pleopod serving in reproduction. Typically refers to first or second pleopod of male. See: appendix masculina, petasma [Stachowitsch, 1992].
(Order Isopoda):
Second pleopod of male; inner branch (endopod) may be modified into a rod-shaped structure (appendix masculina) for reproductive purposes [Stachowitsch, 1992].
(Order Mysida):
In male, term applied to pleopod (usually third or fourth) modified for copulatory purposes [Stachowitsch, 1992].
Crustacea glossary. Natural History Museum of Los Angeles County. 2011.