Macellicephaloides, USCHAKOV, 1955

Bonifácio, Paulo & Menot, Lénaïck, 2019, New genera and species from the Equatorial Pacific provide phylogenetic insights into deep-sea Polynoidae (Annelida), Zoological Journal of the Linnean Society 185, pp. 555-635 : 607-608

publication ID	74C07292-2BD6-4E3E-B68D-B144B81BBD83
publication LSID	lsid:zoobank.org:pub:74C07292-2BD6-4E3E-B68D-B144B81BBD83
persistent identifier	https://treatment.plazi.org/id/0B1B8791-FFCE-061D-FB57-EDF07E0E5A66
treatment provided by	Felipe
scientific name	Macellicephaloides
status

Treatment

MACELLICEPHALOIDES USCHAKOV, 1955 View in CoL

Macellicephaloides Uschakov, 1955: 314 View in CoL . – Levenstein, 1971b: 26. – Hartmann-Schröder, 1974: 81. – Fauchald, 1977: 63. – Uschakov, 1982: 127 (translated version). – Pettibone, 1989b: 161.

Type species: Macellicephaloides grandicirra Uschakov, 1955 .

Diagnosis (emended): Short body, dorsally flattened, up to 21 segments. Prostomium bilobed. Frontal filaments present ( Macellicephaloides grandicirra and Macellicephaloides moustachu sp. nov.) or absent ( Macellicephaloides uschakovi , Macellicephaloides verrucosa and Macellicephaloides vitiazi ). Eyes absent. Median antenna present, lateral antennae absent. Tentacular segment fused to prostomium; tentaculophores without acicula or chaetae. Pharynx with two pairs of jaws; dorsal pair fused; with five pairs of pharyngeal papillae. Dorsal tubercles absent ( Macellicephaloides alvini , Macellicephaloides grandicirra , Macellicephaloides moustachu sp. nov., Macellicephaloides uschakovi and Macellicephaloides vitiazi ) or nodular ( Macellicephaloides verrucosa ). Elytrophores small, eight pairs, on segments 2, 4, 5, 7, 9, 11, 13 and 15. Parapodia subbiramous. Notopodia reduced, with short to long, slender to stout notoacicula. Neuropodia with elongate acicular lobe; tips of neuroaciculae not penetrating epidermis. Notochaetae absent. Neurochaetae slender, with serrated margins. From segment 3, ventral cirri inserted distally on neuropodia.

Remarks: Currently, eight species have been described ( Pettibone, 1989b) in this relatively speciose genus, presenting such particular morphological characters as: modification in prostomium shape, dorsal jaws fused, absence of notochaetae and very short to very long notoacicula. The genus description is emended here in order to include the characters observed in the new species below: very short and slender notoacicula.