semi-closed petasma
The lateral lobes are rather flexable, markedly folded, supported by strong ribs, with the ventral costae approaching rather closely, delimiting moderately large space, narrowly open distally where usually overlapped by well developed distomedian projections. See: petasma [Perez Farfante and Kensley, 1997].

Crustacea glossary. . 2011.

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”