Procerini

Nygren, Arne, 2004, Revision of Autolytinae (Syllidae: Polychaeta)., Zootaxa 680, pp. 1-314: 32-39

publication ID

10.5281/zenodo.157809

publication LSID

lsid:zoobank.org:pub:471A4E52-4C92-44F8-AB38-CD03071C0067

persistent identifier

http://treatment.plazi.org/id/03CDB626-CC51-4E07-FEE8-7871895E824D

treatment provided by

Plazi

scientific name

Procerini
status

 

Pharynx sinuation Trepan teeth Proventricle in chaetiger Reproduc­ tive mode Additional fea­ tures Distri­ bution References branchiata  1– several 1 20 uneq; 1L+(1–3)S 6–8(2–3) 50 S; AS Furcating nuchal epaulettes ANT 1Averincev, 1972 clavata  several 24 eq 5(1) 20 S; AS NEA longi­ pharyngea several 20 eq 4–5(1) 18? SWP pectinans  1 217 uneq; 1L+(1–2)S 5–6(2) 26 S; AS EIO 2Hartmann­ Schröder, 1989 spirifer  1 28 uneq; 1 L+(1–3)S 3 (1) 25 S; AS SWP,

Rows of muscle cells –30 EIO

Linnean name definition. Type genus Proceraea Ehlers, 1864  .

Node­based name definition. Procerini  refers to the least inclusive clade comprising Imajimaea zonata ( Mohammad, 1973)  , Imajimaea draculai  ( San Martín & López, 2002), Virchowia  [ Langerhans, 1879] Nygren, 200 X, Levidorum  [ Hartman, 1967] Nygren, 200 X, and Proceraea  [ Ehlers, 1864] Nygren, 200 X.

Apomorphies. Clade supported by six morphological apomorphies ( Fig. 4View FIGURE 4): 1) nuchal epaulettes extend to end of tentacular segment (character 8), character state change is a parallelism, character later reversed within clade, character further changed within clade, character state unknown in some taxa; 2) cirrostyles alternate in length present (character 16), character state change is a parallelism, character later reversed within clade, character state unknown in some taxa; 3) cirrophores on short cirri absent (character 17), character state change is a parallelism, character later reversed within clade, character state unknown in some taxa; 4) cirrophores on long cirri absent (character 18), character state change is a parallelism, character later reversed within clade, character state unknown in some taxa; 5) chaetal teeth in median and posterior chaetigers with distal tooth smaller than subdistal tooth (character 31), character state change is a parallelism, character later reversed within clade, character state unknown in some taxa; 6) reproductive mode equals anterior scissiparity (character 51), other MPRs possible, character state unknown in some taxa.

TABLE 8 A. A selection of characters for Myrianida ­ taxa. Colour refers to live specimens. Abbreviations as occuring under each headline. Length of the proventricle is noted in brackets and measured as the number of body segments it covers. Nuchal epaulettes: b = beginning, m = middle, e = end, ts = tentacular segment, 1 = chaetiger 1. Ets equals extension of nuchal epaulettes to the end of tentacular segment. Trepan teeth, teeth arrangement: L = large, S = small. Basal ring, infradental spines: y = present, n = absent.

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