Magelonidae, Cunningham & Ramage, 1888

Mortimer, Kate, Mills, Kimberley, Jordana, Esther, Pinedo, Susana & Gil, João, 2020, A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis, Zootaxa 4767 (1), pp. 89-114 : 111

publication ID

https://doi.org/ 10.11646/zootaxa.4767.1.4

publication LSID

urn:lsid:zoobank.org:pub:7B5EC00B-44DA-4A09-8B0A-3DCA78CD7C37

DOI

https://doi.org/10.5281/zenodo.3799098

persistent identifier

https://treatment.plazi.org/id/039487E1-FFCE-1564-FF37-43B11EC53EC6

treatment provided by

Carolina

scientific name

Magelonidae
status

 

Key to adult Magelonidae View in CoL species in European waters

(adapted from Mortimer et al. 2011 and Fiege et al. 2000)

1. Specimens with eight thoracic chaetigers........................................ Octomagelona bizkaiensis View in CoL ( Fig. 12 View FIGURE 12 )

- Specimens with nine thoracic chaetigers............................................................2 ( Fig. 11 View FIGURE 11 )

2. Chaetiger 9 carrying specialised chaetae with mucronate tips................................................... 3

- Chaetiger 9 without specialised chaetae.................................................................... 4

3. Lateral pouches present between chaetigers 10 and 11. Notopodial postchaetal lamellae of chaetigers 1–8 with crenulate upper margins; superior dorsal lobes present on chaetigers (3) 4–8.................................... Magelona johnstoni View in CoL

- Lateral pouches not occurring until extreme posterior region. Thoracic notopodial postchaetal lamellae with smooth upper margins; no superior dorsal lobes on thoracic chaetigers........................................ Magelona mirabilis View in CoL

4. Abdominal hooks bidentate, small, slender species........................................................... 5

- Abdominal hooks tridentate............................................................................. 6

5. Prostomium without prostomial horns, superior dorsal lobes absent................................. Magelona minuta View in CoL

- Prostomial horns, superior dorsal lobes present on thoracic chaetigers........... Magelona View in CoL sp. Mud Volcano, Gulf of Cádiz

6. Prostomium with clearly distinct frontal horns.............................................................. 7

- Prostomium without frontal horns, or with a squared anterior margin (“rudimentary horns”).......................... 8

7. Prostomium wider than long, anterior margin crenulate. Thoracic superior dorsal lobes foliaceous........ Magelona wilsoni View in CoL

- Prostomium longer than wide, anterior margin smooth. Thoracic superior dorsal lobes slender......... Magelona lusitanica View in CoL

8. Slender species; prostomium longer than wide, superior dorsal lobes present on chaetigers 1–8. Thoracic transverse bands just behind parapodia present................................................................ Magelona filiformis View in CoL

- Stout species; prostomium width equal to/or slight larger than length. No thoracic superior dorsal lobes. Thoracic pigment band between chaetigers 5–9 (N.B. fades in preserved specimens). Sediment covered paper-like tube may be present........... 9

9. Abdominal notopodial lateral lamellae much larger than neuropodial. Neuropodial lamellae of posterior thorax ventral beneath chaetal bundle............................................................................ Magelona alleni View in CoL

- Abdominal lateral lamellae of roughly equal size in both rami. Neuropodial lamellae of posterior thorax in a distinctly postchaetal position..................................................................... Magelona equilamellae View in CoL

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Spionida

Family

Magelonidae

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