Planiliza haematocheila (Temminck & Schlegel, 1845)
Sea of Azov, Utlyukskiy Estuary
Black Sea, Sevastopol; Black Sea, Balaklava Bay; Black Sea, Kerch channel (Naberezhnoe); Black Sea, Karantinnaya Bay, Sevastopol
General internal morphology and haptoral armaments all conform to diagnose of genus Ligophorus sensu Euzet & Suriano (1977). Flattened specimens with body-size 572–1000 × 90–180 mkm. Anchors similar: distal part shorter than proximal part; distal and proximal parts form obtuse angle; distal part with straightened shaft; point almost at right angle. Ventral anchor roots of almost equal length (inner 10–13, outer 8–11 mkm); inner root of dorsal anchor longer than outer (16–20 vs. 6–12 mkm). Proximal part of the ventral anchors at the point where the roots bifurcate has high individual variability in the shape, sometimes with deep fissure between roots. Ventral anchor: inner length 38–44; distal part length 23–25; shaft length 21–24; point length 9–10; inner length of proximal part 30–33; outer length of proximal part 21–23; span between roots 18–20 mkm. Dorsal anchor: inner length 40–42; distal part length 21–23; shaft length 19–21; point length 9-10; inner length of proximal part 27–30; outer length of proximal part 21–23; span between roots 17–20 mkm. Marginal hooks typical for genus (Euzet & Suriano, 1977): total length 12–13, shaft length 6–7, sickle length 5–6 mkm. Dorsal bar, 5–8 high, 40–46 wide, scale-beam shaped, usually curved. Ventral bar, 8–10 high, 44–51 wide, with two digitiform anterior processes, 5–6 long, span between them 7–9; middle part slightly protruded anterior; ventral side of ventral bar with 2 wide, wing-shaped laminae attached to each anterior process and entirely surrounding lateral margins of ventral median knoll.
28S ribosomal RNA gene, partial sequence deposited in GenBank:
Outlines of haptor structures
We draw very perfect and very precise outlines of haptoral structures. We use them for analysis of the variability of haptoral structures shapes. When we publish our results, we show real sharped outlines. But before that the outlines stay blurred.
Specimens in collection