Raphidiophrys intermedia Penard, 1904
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publication ID |
https://doi.org/ 10.4467/16890027AP.18.018.10094 |
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persistent identifier |
https://treatment.plazi.org/id/32645169-EC12-FF84-FCAD-FADDF5DDFA5B |
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treatment provided by |
Felipe |
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scientific name |
Raphidiophrys intermedia Penard, 1904 |
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Raphidiophrys intermedia Penard, 1904 ( Fig. 5E–H)
Description: Oval, rare triangular plate scales are 4.54–10.0×2.22–5.0 µm. Length to width ratio is 1.94– 3.84. Edges of scales are bent inside and form marginal rim 0.36–0.63 µm in diameter. Radial ribs extend from edges to the center, visible on the outer surface of the scales. Distances between ribs on marginal rim are 0.26–0.43 µm.
Distribution: Freshwaters of USA ( Wujek 2005), Australia (Croome 1987), Canada, Chile, New Zealand ( Nicholls and Dürrschmidt 1985), Sweden, Netherlands ( Siemensma and Roijackers 1988b). It was found in Russia in freshwaters of European part (Leonov 2009, 2010a; Leonov and Mylnikov 2012; Prokina et al. 2017c).
Raphidiophrys ovalis (Dürrschmidt in Nicholls et Dürrschmidt, 1985) Siemensma et Roijackers, 1988 [bas.: Raphidiophrys orbicularis ssp. ovalis Dürrschmidt in Nicholls et Dürrschmidt, 1985; syn.: Raphidiophrys intermedia sensu Siemensma, 1981 ] ( Fig. 5C–D)
Description: Oval plate scales are 7.21×5.14 µm, with slightly narrowing elongated ends. Length to width ratio is 1.4. Dense marginal rim is 0.12–0.15 µm in diameter. Radial ribs extend from edges to the center, visible on the outer surface of the scales. Distances between ribs on marginal rim are 0.11–0.20 µm.
Remarks: Morphology of observed scale corresponds to previous descriptions, except the smaller size of scales, observed by Nicholls and Dürrschmidt (1985): 2.0–6.3×2.2–4.8 µm.
Distribution: Freshwaters of Europe ( Siemensma and Roijackers 1988b), N. America ( Wujek 2005), Chile, New Zealand, Japan ([as R. orbicularis ssp. ovalis ] Nicholls and Dürrschmidt 1985). It was found in Russia in freshwaters of Voronezh Region ( Leonov 2010a).
****Pterista Shishkin et Zlatogursky, 2018
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