Scolelepis (Scolelepis) squamata (Abildgaard, in O.F. Müller, 1806 ), Abildgaard, in O.F. Muller, 1806

Surugiu, Victor, 2016, On the taxonomic status of the European Scolelepis (Scolelepis) squamata (Polychaeta: Spionidae), with description of a new species from southern Europe, Zootaxa 4161 (2), pp. 151-176 : 154

Scolelepis (Scolelepis) squamata (Abildgaard, in O.F. Müller, 1806)

Figures 1–4

Lumbricus squamatus Abildgaard, in O.F. Müller, 1806: 39 , pl. CLV, figs. 1–5.— Grube 1850: 317.

Lumbricus cirratulus Delle Chiaje 1822 : pl. 64, figs. 16, 20, 21.—1829: 177–178, 196.— Quatrefages 1865: 449.

Scolelepis squamosa .— Blainville 1828: 492 –493.

Nerine cirratulus .— Claparède 1869: 66 –70, pl. XXIV, fig. 1.— Mesnil 1896: 152 –165, pl. IX, figs. 1–24 (synonymy).—Saint- Joseph 1898: 349 –352, pl. XX, fig. 164 (synonymy).— McIntosh 1915: 148 –154, pl. XC, fig. 2, pl. XCI, fig. 4, pl. XCVII, figs. 2–2c, pl. XCVIII, fig. 1, pl. XCIV, figs. 4–6, 12, pl. CV, figs. 1–1d (synonymy).— Fauvel 1927: 36, fig.11, g–n.— Bellan & Lagardère 1971: 577 –578, fig. 3.— Marinov 1977: 150, pl. XXI, fig. 1, a–e.

Scolecolepis squamata .— Söderström 1920: 218.

Scolecolepis squammata [sic].— Dörjes 1971: 213, 215, fig. 4. Partim.

Scolelepis squamata .— Light 1977: 73 –75, figs. 2a–f, 3a–b. Partim.— Kisseleva 2004: 248 –249, fig. 97.

Nerine mesnili Bellan & Lagardère 1971: 572 –576, figs. 1–2. New Synonymy.

Scolelepis mesnili .— Capaccioni-Azzati 1991: 57 –59, fig. 3.

Scolelepis squamatus .— Sikorski 2001: 316.

Scolelepis (Scolelepis) squamata .— Delgado-Blas 2006: 76 –79, fig. 1A–Q.

Figures

FIGURE 1. Scolelepis (Scolelepis) squamata (Abildgaard, in O. F. Müller, 1806), SEM micrographs. A, voucher specimen (Black Sea, Cap Midia, MNINGA PLY 0061); B – E, voucher specimen (Spain, Gijón); F, G, voucher specimen (Black Sea, Mangalia, MNINGA PLY 0063). A, anterior end, dorsal view, palps missing, showing nuchal organs and dorsal primary and secondary transverse ciliary bands; B, middle section of left palp, frontal-lateral view, showing ciliation pattern; C, basal part of right palp, lateral view, showing tightly fused, slightly rugose sheath; D, close-up view of long transverse rows of cilia on palp, showing arrangement of cilia and mucus secreting cells; E, detail of necks of mucus secreting cells; F, middle chaetigers, left lateral view (arrowheads indicate lateral ciliated organs); G, middle chaetigers, dorsal view, showing the primary ciliary band on low transverse folds. c — cilia; n — neck of gland cells; nu — nuchal organ; pc — dorsal primary transverse ciliary band; sc — dorsal secondary transverse ciliary band. Scale bars: A, F, G = 500 µm; B = 20 µm; C = 200 µm; D = 10 µm; E = 2 µm.

FIGURE 2. Scolelepis (Scolelepis) squamata (Abildgaard, in O. F. Müller, 1806), SEM micrographs. A, E, F, voucher specimen (Black Sea, Mangalia, MNINGA PLY 0063); B – D, voucher specimen (Black Sea, Cap Midia, MNINGA PLY 0061). A, close-up view of the lateral ciliated organ; B, neuropodial hooded hooks, lateral view (hoods removed); C, tip of neuropodial hooded hook, antero-lateral view, showing notched apical tooth above the main fang (hood removed); D, close-up view of the tip of the hooded hook, dorso-lateral view, showing scale-like structures on the surface of the hood; E, notopodium of a posterior chaetiger, left lateral view, showing hooded hooks alternating with capillaries and a bundle of long dorsal superior capillaries; F, posterior end, dorsal view, showing terminal anus and cushion-like pygidium (somewhat damaged ventrally by sonication). Scale bars: A, B = 20 µm; C = 10 µm; D = 5 µm; E = 100 µm; F = 500 µm.

FIGURE 3. Scolelepis (Scolelepis) squamata (Abildgaard, in O. F. Müller, 1806), LM micrographs. A – D, F, H, voucher specimen (France, Île d’Oléron, MNHN POLY 0582); E, G, voucher specimen (Spain, Pontevedra, MNCN 369). A, capillary notochaetae from chaetiger 11; B, capillary neurochaetae from chaetiger 11; C, neuropodial hooded hooks of a small individual, from chaetiger 38, lateral view; D, neuropodial hooded hooks of a small individual, from chaetiger 45, front-on view, showing notched apical tooth above the main fang with bidentate appearance; E, neuropodial hooded hook of a very large individual, from chaetiger 104, lateral view; F, notopodial hooded hooks of a small individual, from chaetiger 48, lateral view; G, cross section of chaetiger 104, anterior view; H, egg with honeycomb-ornamented shell. Scale bars: A – D, F = 50 µm; E, H = 100 µm; G = 1 mm.

FIGURE 4. Scolelepis (Scolelepis) squamata, morphometric characteristics. A, relationship between the body-size (referring to maximum anterior width in millimetres) and the palp length (in chaetiger number) (y = 7.6755 + 3.5999 x; r s = 0.593; P <0.0001; n = 54). B, relationship between the total number of chaetigers and the first chaetiger on which neuropodial hooded hooks (triangles, y = 10.698 + 0.22969 x; r s = 0.957; P <0.0001; n = 51) and the notopodial hooded hooks (circles, y = 9.2712 + 0.55917 x; r s = 0.948; P <0.0001; n = 51) are present (black symbols—specimens from the Black Sea; white symbols—the Mediterranean Sea specimens from near type locality; red symbols—syntypes of Scolelepis mesnili; blue symbols—specimens from the Atlantic coast of Spain and France; green symbols—specimens from the North Sea and Kattegat). C, relationship between the body-size (referring to maximum anterior width in millimetres) and the number of teeth above main fang (y = 2.3168 + (− 0.57224 x); r s = − 0.877; P <0.0001; n = 104).