Limnioides nymphaea, Stenroos, 1898

Wallace, Robert Lee, Kordbacheh, Azar & Walsh, Elizabeth J., 2018, Key to the currently recognized species of Limnias Schrank, 1803 (Rotifera, Monogononta, Gnesiotrocha, Flosculariidae), Zootaxa 4442 (2), pp. 307-318 : 314

Limnias nymphaea Stenroos, 1898

Fig. 2B

Limnias melicerta nymphae: Koste, 1978

Types: None designated.

Type locality: Lake Nurmijärvi ( Finland).

Diagnosis. Tube dark gray, set with grains of sand. Ventral antennae short. Dorsal gap in corona unknown. Dorsal nodules present (n = 14 in 3 rows: 6,6,2).

Measurements: Total tube length 510–650 µm.

Comments. The etymon of this genus is apparently a reference to the plant substratum, Nuphar -Blätte (sic), on which Stenroos (1898) found specimens. Amictic, male, and diapausing embryos undescribed. This species was described from a single occurrence on the leaves of Nuphar sp. in Lake Nurmijärvi ( Finland). Koste (1978) states that this species may be a form of L. melicerta .

Figures

FIGURE 2. Two very rare Limnias species, each of which has been reported only once. (A) Limnias cornuella (Line art of four figures from Rousselet, 1889); (B) Limnias nymphaea (Line art of three figures from Stenroos, 1898). Symbols: dn = dorsal nodules; rt = ring tube; s = substratum.