Spio picta Zachs 1933

• Main Author: Bick, Andreas
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2011
• Subjects: Biodiversity; Taxonomy; Animalia; Annelida; Polychaeta; Spionida; Spionidae; Spio; Spio picta; Sakhalin
• Online Access: https://doi.org/10.5281/zenodo.6182986; http://treatment.plazi.org/id/9C0687ADFF9CC35EFF59F93DFB12D1BA

Spio picta Zachs, 1933 (Figs 3–5) Spio filicornis picta Zachs, 1933: 129. Spio picta . Buzhinkaya 1985: 134 –135, Fig. 12. Type material. Lectotype: Sea of Japan, Peter the Great Bay, Stn. 182 (ZIN 1/25818); Paralectotype: Sea of Japan, Peter the Great Bay, Stn. 116, 1 specimen (ZIN 2/25819). Non-type material. Sea of Okhotsk, South Sakhalin, Aniva Bay, Lagoon Busse, littoral, 20 Jul 1947, 1 specimen (ZIN 4/46812); Sea of Okhotsk, South Sakhalin, Aniva Bay, near village Tobuti, littoral, 19 Jul 1947, 1 specimen (ZIN 3/46811); Sea of Japan, Tatar Strait, Vostok Bay, depth 4 m, 25 Aug 1980, 1 specimen (ZIN 5/46983); Sea of Japan, Tatar Strait, Chikhachev Bay, depth 1 m, 29 Aug 1982, 31 specimens (ZIN 6/47041). Diagnosis. Prostomium comparatively broad, with bluntly rounded anterior part and parallel lateral margins; branchiae on chaetiger 1 little shorter but distinctly narrower than second pair; notopodial postchaetal lamellae on chaetiger 1 very small, completely fused with branchiae on anterior and medium chaetigers; 8–13 tridentate neuropodial hooded hooks starting from chaetigers 13–19. Description. Lectotype and paralectotype anterior fragments, in poor condition. One small complete specimen with 58 chaetigers (7.3 mm in length, 0.9 mm in width) without palps, 35 anterior fragments and several detached palps available (longest anterior fragment with 85 chaetigers, width 2.2 mm; maximum width 2.7 mm; maximum length of anterior fragment about 30 mm). Prostomium comparatively broad (Figs 3 A, 4A, 5A), often with median longitudinal groove; anterior part of prostomium bluntly rounded or truncate, only slightly expanded at anterolateral margin, often projecting over the peristomium, lateral margins run parallel (Figs 3 A, 4A, 5A, D); posterior end short, extending to chaetiger 1, tapered, slightly elevated, with indistinct papilla (Figs 3 A, 4A, 5A, D); usually two pairs of black eyes, arranged in trapezoid or rectangle, anterior pair crescent-shaped or rounded, posterior pair smaller and rounded (Figs 3 A, 5A, ...