Jugal fold see plica jugalis

jugal lobe (ARTHRO: Insecta) A lobe at the base of the fore wing that makes contact with the hind wing to prevent the wings from moving out of phase.

jugal muscles (MOLL) Thick longitudinal muscles at the base of the radular mass.

jugal region 1. (ARTHRO: Crustacea) In Decapoda, the anterolateral part on the ventral surface, located on opposite sides of the buccal cavity; pterygostomial region. 2. (ARTHRO: Insecta) The posterior basal lobe or area of a wing demarcated from the vannal region by the jugal fold (plica jugalis).

jugal sinus (MOLL: Polyplacophora) A depression between the sutural laminae of chitins.

jugal tract (MOLL: Polyplacophora) The tegmentum surface, adjacent to the jugum.

jugo-frenate wing coupling (ARTHRO: Insecta) Lepidoptera, wing coupling where the jugum is folded under the fore wings and holds the frenular bristles.

jugular a. [L. jugulum, collar bone, throat] Of or pertaining to the throat.

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