Levinsenia

Lovell, Lawrence L. & Fitzhugh, Kirk, 2020, Taking a closer look: an SEM review of Levinsenia species (Polychaeta: Paraonidae) reported from California, Zootaxa 4751 (2), pp. 257-275 : 271-272

publication ID

https://doi.org/ 10.11646/zootaxa.4751.2.3

publication LSID

lsid:zoobank.org:pub:D0ADB14D-1A73-4325-859F-570EA2042F23

DOI

https://doi.org/10.5281/zenodo.3716883

persistent identifier

https://treatment.plazi.org/id/03878787-B648-2411-FF66-587794A7FEF5

treatment provided by

Plazi

scientific name

Levinsenia
status

 

Key to the species of Levinsenia View in CoL reported from California

1. 1A. Body very small (10–15 mm long, 0.10 mm wide), terminal sensory organ well developed, 4–8 pairs of truncate, heavily ciliated branchiae, acicular spines bent tipped with thick hoods.................................... L. barwicki View in CoL n. sp.

1B. Body small to moderate size (15–30 mm long, 0.15-0.35 mm wide), terminal sensory organ not well developed, 5–36 branchial pairs, acicular spines not bent tipped, with fringe on convex side................................................ 2

2. 2A. Posterior acicular neurochaetae in multiple overlapping rows; vary in shape from longer, thinner, straighter to shorter, thicker more recurved; post-branchial notopodial with methyl green staining spots......................... L. kirbyorum View in CoL

2B. Posterior acicular neurochaetae in single rows, uniformly shaped; post-branchial notopodia without methyl green staining spots............................................................................................... 3

3. 3A. More than 25 pairs of long, thin, tapering branchiae; posterior acicular neurochaetae thin, nearly straight distally; methyl green staining absent on any part of the body................................................. L. multibranchiata View in CoL

3B. Fewer than 25 pairs of tapering, blunt-tipped branchiae; posterior acicular neurochaetae, thicker, recurved distally........ 4

4. 4A. Prostomium conical, with ‘ocular’ pigment (may fade); 5–9, and up to 20 branchial pairs; methyl green stain pre- and post-chaetal areas, speckled in prebranchial chaetigers; solid methyl green band in branchial region and 2–3 post-branchial chaetigers.................................................................................... L. oculata View in CoL

4B. Prostomium triangular, longer than wide, without “ocular” pigment; 7–16 branchial pairs; ventral methyl green staining in branchial region............................................................................... L. gracilis View in CoL

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Family

Paraonidae

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