Lepidastheniinae

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Taxonavigation

Ordo: Phyllodocida
Familia: Polynoidae

Name

Pettibone, 1989 – Wikispecies link – Pensoft Profile

Type genus

Lepidasthenia Malmgren, 1867, by original designation.

Diagnosis

(Modif. Barnich and Fiege 2004). Prostomium with median and lateral antennae; lateral antennae terminal, ceratophores distinct. Tentaculophores without chaetae. Palps visible dorsally. Pharynx with jaws and border papillae. Dorsal tubercles indistinct. Dorsal cirrophores without filamentous organs, sometimes with lateral projections. Notopodia reduced, notochaetae usually missing. Neuropodia distally truncate, elongate, notched dorsally and ventrally, forming subequal anterior and posterior lobes; no supra-acicular processes.

Remarks

Pettibone (1989:301) listed six genera as belonging to Lepidastheniinae: Alentiana Hartman, 1942, Benhamipolynoe Pettibone, 1970, Hyperhalosydna Augener, 1922, Lepidasthenia, Perolepis Ehlers, 1908, and Telolepidasthenia Augener & Pettibone in Pettibone, 1970. The review by Barnich and Fiege (2004) is followed regarding the composition and affinities in Lepidastheniinae.

Key to genera of Lepidastheniinae Pettibone, 1989

Key to genera of Lepidastheniinae Pettibone, 1989 — S. Salazar-Vallejo , N. González , P. Salazar-Silva

1		Body with elytrae continued through posterior segments; sometimes reduced in size in medial and posterior segments    2
–		Body with elytra limited to anterior and medial regions    10
2		Notochaetae present    3
–		Notochaetae absent; parapodial surface usually smooth    4
3		Lateral antennae with ceratophores as long as wide; dorsal cirri about three times longer than ventral ones (numerous segments, up to 90 pairs of elytra)    Lepidastheniella Monro, 1924
–		Lateral antennae with ceratophores twice as long as wide; dorsal cirri 6–7 times longer than ventral ones (reduced number of segments, 15 pairs of elytra)    Parahalosydna Horst, 1915
4		Elytra alternate with cirri in medial and posterior regions    5
–		Elytra present every third segment in medial and posterior regions    7
5		First chaetiger with a middorsal anterior projection over prostomium; neurochaetae unidentate with two subdistal teeth; elytra smooth    Showapolynoe Imajima, 1997
–		First chaetiger without anterior projection; elytra with microtubercles    6
6		Neurochaetae mostly bidentate with series of 10–20 lamellae; elytral microtubercles along exposed area    Hyperhalosydna Augener, 1922
–		Neurochaetae only unidentates with series of about 10 tiny lamellae; elytral microtubercles scattered    Benhamipolynoe Pettibone, 1970 (partim)
7		Elytrophores elongated, pedunculate; ventral cirri sometimes irregularly swollen    Perolepis Ehlers, 1908
–		Elytrophores short, not transformed into peduncles; ventral cirri tapered or subdistally swollen    8
8		Medial segments with large elytra, overlapping successive ones or approaching middorsally    9
–		Medial segments with tiny, non-overlapping elytra    Lepidasthenia Malmgren, 1867
9		Eyes small, on prostomial upper surface; ventral parapodial surface papillate; all neurochaetae of a single type, with about 20 series of lamellae    Telolepidasthenia Pettibone, 1970
–		Eyes large, on prostomial margins; ventral parapodial surface smooth; neurochaetae of three types: lamellate, denticulate and smooth    Alentiana Hartman, 1942
10		Notochaetae present; parapodial surface smooth; neurochaetae with rows of large lamellae    Pseudopolynoe Day, 1962
–		Notochaetae absent; parapodial surface rugose; neurochaetae with rows of tiny lamellae    Benhamipolynoe Pettibone, 1970 (partim)

Taxon Treatment

• Salazar-Vallejo, S; González, N; Salazar-Silva, P; 2015: Lepidasthenia loboi sp. n. from Puerto Madryn, Argentina (Polychaeta, Polynoidae) ZooKeys, (546): 21-37. doi