Adineta cf. vaga vaga ( Davis, 1873 )

LUKASHANETS, Dzmitry A., VEZHNAVETS, Vasily V., MAYSAK, Natalia N., HIHINIAK 1, Yury H., BORODIN, Oleg I., MIAMIN, Vladislav Ye., GAIDASHOV, Alexey A. & NIKITIUK, Leonid A., 2019, Rotifers (Rotifera) from the inland waters and terrestrial habitats of East Antarctic oases (Enderby Land and Prydz Bay), Fragmenta Faunistica 62 (2), pp. 67-86 : 74

Adineta cf. vaga vaga ( Davis, 1873)

( Fig. 3C )

Callidina vaga Davis 1873: 201

Adineta vaga – Donner 1965: 295, Kutikova 2005: 275

N o t e s. This morphospecies was identified as typical form of the Adineta vaga ( Davis, 1873) , which is the very common oviparous species characterized by rostrum with two lobes bearing not bristles but only very short cilia ( Fig. 3C ). Iakovenko et al. (2015) pointed that newly described A. emsliei Iakovenko et al., 2015 strongly resembles A. vaga . However, the registered morphospecies (1) was colourless, not bright orange or brown; (2) has triangular simple spurs, not needle-formed based on bulbs. These diagnostic peculiarities approached the observed rotifers much closer to A. vaga and distingushed them from A. emsliei . However, the morphometric analysis shows the similarity with A. emsliei in basic proportions of the head, body and foot. Also the rump of the species is rather long but narrower ( Table 2 ). Obviously, for more correct comparison, more data (measured individuals) are needed.

Figures

Fig. 3. Rotifers of Bdelloidea subclass. A – Adineta cf. grandis Murray, 1910: A1 – dorsal view, A2 – head, A3 – fragment of head of the pressed specimen, A4 – masticatory apparatus. B – Philodina gregaria Murray, 1910: B1 – lateral view, B2 – dorsal view of the pressed specimen, B3 – dorsal view of the pressed specimen with semi-spread corona, B4 – three embryos from one maternal specimen, B5 – masticatory apparatus. C – Adineta cf. vaga vaga (Davis, 1873). D – Adineta steineri Bartoš, 1951. E, F – Unidentified bdelloid rotifers in contracted shape (examples); mtu – major teeth in unci; rl – rostrum lamella; rt – rake teeth; fi – fingers; tr – trophi.