Definitions
Lappet
- Down-hanging lateral part of carapace. [Moore and McCormick, 1969]
- Membranous structure, often leaf-like, attached to the distal end of the first segment of the first antenna. [Mauchline, 1984]
- Ventrally projecting subdivisions of pleura. [McLaughlin, 1980]
- (Taxon-specific: Order Mysida) One of two (anterior and posterior) lobe-like extensions of pleura. [Stachowitsch, 1992]