Macrotrachela zickendrahti seda Donner, 1965

Song, Min Ok & Lee, Chang-Ho, 2020, Descriptions of two new species of Philodina (Rotifera, Bdelloidea), with notes on seven rare bdelloids from Korea, Zootaxa 4772 (2), pp. 253-276 : 266

Macrotrachela zickendrahti seda Donner, 1965

Figure 7b

Material. Five specimens found in mosses from Hwasun Gotjawal, Hwasun-ri, Andeok-myeon, Seogwipo-si, Jejuteukbyeoljachido.

In Macrotrachela zickendrahti zickendrahti (Richters) , the tips of appendages on trunk are fine-toothed, and each tooth is extended like long and thin thread. Macrotrachela zickendrahti zickendrahti has two additional subspecies-level taxa, M. zickendrahti digitata Bartoš and M. zickendrahti seda Donner. The tips of appendages on trunk are toothed in both subspecies-level taxa, but without the long and thin extension of each tooth end in M. zickendrahti digitata , while with short and sharp extension of each tooth end in M. zickendrahti seda .

The characteristics of the Korean specimens agree well with those of the type specimens except that some appendages are longer than those in the original illustration.

This subspecies-level taxon is very rare and was rediscovered in Korea 53 years after the original description from Spain by Donner (1965).

Measurements. Greatest trunk width 80–115 μm.

Figures

FIGURE 7. (a) Macrotrachela pinnigera (Murray, 1908), trunk, dorsal view; (b) Macrotrachela zickendrahti seda Donner, 1965, trunk, dorsal view (scale bars: a–b = 50 μm).