Dicrotendipes lobiger

(Kieffer, 1921)

Body
Medium to large sized larvae. Living larvae greenish red. Claws on the posterior parapods are simpel. No ventral tubules on the 11th segment. Procercus and anal tubules present (Wiederholm, 1983; Moller Pillot, 1984a).

Head
The head capsule is shining. Anterior margin of frontal apotome granulate with a large pit. The frontal apotome is fused with the clypeus Dicr lobiger frontoclyp.
Antenna
The antenna consists of 5 segments. The blade is subequal to or shorter than the flagellum. Segment 4 is unusually long, much longer than segment 3. Lauterborn organs distally on the second segment.
Mentum
The mentum has one crenate median tooth and 6 pairs of lateral teeth. The ventromental plates are broadly, triangular.
Labrum
SI is plumose and labral lamellae a large scale with numerous spines. The pecten epipharyngis consists of 7 spines. The premandible has two apical teeth and one blunt inner tooth (Contreras-Lichtenberg, 1986).
Mandible
The mandible with a dark dorsal tooth apical tooth with 3 dark inner teeth. The seta interna with 4 plumose branches (Wiederholm, 1983; Contreras-Lichtenberg, 1986).

Differential characteristics
The combination of a single median mental tooth Dicr nervosus mentum, ventromental plates narrower than mentum. Pecten epipharyngis with 10 teeth and a concave frontal apotome separate Dicrotendipes from all other genera. Dicrotendipes lobiger with a convex frontal apotome can be separated by the large pit and crenate anterior margin of the frontal apotome, the single median mental tooth and ventromental plates narrower than mentum.
D. lobiger can be separated from the other Dicrotendipes by the fused frontal apotome and the clypeus. Also the large pit on the frontal apotome is distinctive.

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