Small prey, mainly consisting of insects, are attracted by the sweet secretions of the peduncular glands. |
Once the prey is entrapped by the peduncular glands and digestion begins, the initial flow of nitrogen triggers enzyme release by the sessile glands. |
On contact with an insect, the peduncular glands release additional mucilage from special reservoir cells located at the base of their stalks. |
Thus, the peduncular vertebrae form a rigid bar, interposed between two relatively flexible joints. |
One is termed a peduncular gland, and consists of a few secretory cells on top of a single stalk cell. |