- Large, complex buccal cavity that is dorsoventrally elongated.
- Stoma opening surrounded by a cuticular membrane.
- A peri-oral groove inside the stoma opening connected with a
dorsal groove in the buccal capsule wall.
- Buccal capsule wall comprised of four pairs of sclerotized
plates, two lateral, one large dorsal, one large ventral and two
smaller dorsal and ventral plates
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