accessory lobule
Small lobe at base of median lobe, on anterior surface of petasma in the genus Gennadas [Perez Farfante and Kensley, 1997].
(Order Cumacea):
One posteriorly directed part of epipod of first maxilliped pair, single respiratory projection set apart from series of remaining branchial lobules [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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