Paradiopatra

• Main Authors: Paxton, Hannelore, Budaeva, Nataliya
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Eunicida; Onuphidae; Paradiopatra; McIntosh; Antarc*; Antarctica
• Online Access: https://zenodo.org/record/6145086; https://doi.org/10.5281/zenodo.6145086

Key to species of Paradiopatra 1 Peristomial cirri absent (Fig. 1 C). 2 - Peristomial cirri present (Fig 3 C). 6 2 Branchiae present. 3 - Branchiae absent. 4 3 Branchiae from chaetiger 16 or later as single filaments (Fig 2 D). Paradiopatra acirrata n. sp. - Branchiae from chaetiger 8–10 with up to three filaments. Paradiopatra gracilis Imajima, 2009 4 Two anterior pairs of parapodia with subulate ventral cirri. Paradiopatra abyssalis (Imajima, 1999) - Three anterior pairs of parapodia with subulate ventral cirri. 5 5 Pseudocompound falcigers present on the first four pairs of parapodia. Paradiopatra antarctica (Monro, 1930) - Simple falcigers present on the first three pairs of parapodia. Paradiopatra minuta (McIntosh, 1885) 6 Subacicular hooks starting from chaetiger 9, rarely from chaetigers 8–11. 7 - Subacicular hooks starting from chaetiger 12 or later. 26 7 Branchiae present. 8 - Branchiae absent. 21 8 Branchiae from chaetiger 3, rarely from chaetigers 4 or 5, well developed with not less than seven filaments. 9 - Branchiae from chaetiger 6 (very rarely on chaetiger 5) or later, single or pectinate with not more than six branchial filaments. 10 9 Best developed branchiae with 7–11 filaments; median antenna shorter than lateral antennae; pseudocompound falcigers with moderately long hoods. Paradiopatra parva (Moore, 1911) - Best developed branchiae with 14–18 filaments; median antenna equal in length to lateral antennae; pseudocompound fal- cigers with long hoods. Paradiopatra furcatoseta (Monro, 1937) 10 Branchiae from chaetiger 6, rarely from chaetiger 7. 11 - Branchiae from chaetiger 8 or later. 16 11 Branchiae single, rarely bifid; median antenna more than half as long as lateral antennae. 12 - Branchiae pectinate, with more than three filaments in adults; median antenna less than half as long as lateral antennae. 13 12 Frontal lips ovoid; (Fig. 12 C); pseudocompound falcigers clearly bidentate. Paradiopatra lepta (Chamberlin, 1919) - Frontal lips trapeziform; pseudocompound falcigers indistinctly ...