Table 1.
Metric features of the material of the complex Cymbella affinis/tumidula/turgidula analyzed in this study (n= 29–34 individuals).
| Taxon (published name) | Current name | Material | Length (µm) | Breadth (µm) | L/B ratio | Striae in middle part (in 10 µm) | Striae close to the ends (in 10 µm) | Puncta (in 10 µm) | Stigmata |
|---|---|---|---|---|---|---|---|---|---|
| Cymbella affinis Kütz. sensu Krammer (2002) | Cymbella tumidula Grunow var. tumidula | Preparation 1198F IOK in BRM, from France, Normandy, Falaise, coll. Brébisson, in BRM (Figs 50–56) | 25.4–29.8 | 7.8–8.7 | 3.4–3.9 | 10–15 | 12–19 | 26–33 | 2–3 |
| Cymbella affinis Kützing (1844) | Cymbella affinis Kützing var. affinis | Lectotype designated by Tuji (2007), preparation BM 18530, from France, Falaise, coll. Brébisson, in BM (Figs 1–7) | 22.5–26.7 | 7.0–8.5 | 2.9–3.4 | 9–12 | 11–18 | 19–27 | 1 |
| Cymbella affinis var. procera Krammer (2002) | Cymbella tumidula var. procera (Krammer) W.Silva, comb. nov. | Holotype, preparation 714 IOK, from Serbia, Rogatica, 1976, in BRM (Figs 57–63) | 27.0–40.3 | 9.0–10.2 | 2.9–4.2 | 9–13 | 13–18 | 25–31 | 2–5 |
| Cymbella excisa var. procera Krammer (2002) | Cymbella affinis var. neoprocera W.Silva, comb. nov. et nom. nov. | Holotype, preparation 212A IOK, from West Germany, Eifel, Totenmaar, 22.2.1974, in BRM (Figs 22–28) | 21.5–41.0 | 8.0–11.0 | 2.7–4.0 | 9–13 | 11–14 | 22–27 | 1 |
| Cymbella excisa Kützing (1844) | Cymbella affinis var. excisa (Kütz.) Grunow | Isolectotype, preparation 1131G IOK, Hauck No. 72 from Italy, 26.3.1837, in BRM (Figs 15–21) | 23.1–28.5 | 7.0–9.5 | 2.7–3.9 | 9–12 | 11–17 | 24–26 | 1 |
| Cymbella excisa var. angusta Krammer (2002) | Cymbella affinis var. angusta (Krammer) W.Silva, comb. nov. | Holotype, preparation 752 IOK, from Croatia, Lake Gavanovac, 18.5.1976, in BRM (Figs 29–35) | 20.5–35.0 | 6.0–8.5 | 3.2–4.6 | 9–15 | 11–18 | 19–29 | 1 |
| Cymbella excisa Kützing (1844) | Cymbella affinis var. excisa (Kütz.) Grunow | Lectotype (designated here), preparation BM 18543, from Hauk No. 72 from Italy, 26.3.1837, in BM (Figs 8–14) | 21.5–26.5 | 7.0–8.7 | 2.6–3.5 | 9–13 | 11–16 | 21–25 | 1 |
| Cymbella excisa var. subcapitata Krammer (2002) | Cymbella affinis var. subcapitata (Krammer) W.Silva, comb. nov. | Holotype, preparation 717A IOK, from Hungary, Balaton, 6.77, in BRM (Figs 36–42) | 21.0–31.7 | 7.4–9.0 | 2.7–4.0 | 8–12 | 9–15 | 26–31 | 1 |
| Cymbella subturgidula Krammer (2002) | Cymbella subturgidula Krammer | Lectotype, preparation 1046E IOK, from Korea, Ulchin County, Kyungsang Pukdo, Kwangchun River, in BRM (Figs 71–77) | 30.3–37.4 | 9.0–12.8 | 2.6–3.5 | 9–11 | 12–15 | 21–24 | 2 |
| Cymbella tropica Krammer (2002) | Cymbella tropica Krammer | Holotype, preparation 1015D IOK, from Venezuela, Rio Manizanes, coll. Rumrich 4.4.1990, in BRM (Figs 64–70) | 34.5–42.7 | 10.0–12.0 | 3.1–4.0 | 9–12 | 11–12 | 21–24 | 1 |
| Cymbella tumidula Grunow in Schmidt (1875) | Cymbella tumidula Grunow var. tumidula | Lectotype (designated here); Epitype (designated here), preparation BM 18543, from Hauck No. 72, from Italy, 26.3.1837, in BM (Figs 43–49) | 26.8–34.7 | 7.8–8.7 | 3.4–4.0 | 10–15 | 12–19 | 26–33 | 2–4 |
| Cymbella salinarum Grunow in Schmidt (1875) | Cymbella tumidula var. salinarum (Grunow) Cleve | Holotype illustration provided Krammer (2002, Fig. 25: 13) | 34.0 | 10.7 | 3.2 | 14 | 15 | – | 1 |
| Cymbella turgidula Grunow in Schmidt (1875) | Cymbella turgidula Grunow | Epitype designated by Tuji (2007), preparation 1504, from Puerto Rico, in the Grunow Collection, in W | 36.5–45.0 | 10.8–13.3 | 3.2–3.4 | 9–12 | 11–17 | 21–24 | 1–3 |
| Cymbella turgidula var. nipponica Skvortsov (1936) [≡ Cymbella rheophila Ohtsuka in Ohtsuka and Tuji (2002); ≡ Cymbella uenoi f. nipponica (Skvortsov) Tuji (2007)] | Cymbella subturgidula Krammer | Isolectotype, preparation R 214.928, from sample 0983 from Japan, Lake Biwa, coll. Tamiji Kawamura, 03.11.1915, in R (Figs 78–80) | 28.1–39.0 | 10.0–13.2 | 2.8–3.0 | 9–12 | 12–15 | 21–26 | 1–2 |
| Preparations R 214.929 and R 214.930, from sample 1062, from Japan, Yamanoshita Bay in Lake Biwa, Otsu City, Shiga Prefecture, coll. Yasuko Iwao in 23.01.1993, in R (Fig. 81) | 27.7–39.2 | 10.3–13.1 | 2.5–3.6 | 9–12 | 12–15 | 22–26 | 1–2 | ||
| Preparations R 214.931 and R214.932, from from sample 1093, from Japan, cobble in Lake Biwa, at Uchidehama, Otsu City, Shiga Prefecture, coll.Yasuko Iwao, 03.03.1993, in R (Figs 82–84) | 26.5–40.1 | 11.1–13.5 | 2.3–3.4 | 9–13 | 12–14 | 21–24 | 2–3 | ||
| Cymbella uenoi Skvortsov exTuji (2007) | Epitype and isotype illustrations provided Tuji (2007, Figs 21–24, 26) | 26.3–41.0 | 9.0–12.7 | 2.9–3.2 | 9–11 | 12-15 | 21–24 | 2 |