Otostephanos torquatus amoenus Milne, 1916

Song, Min Ok & Lee, Chang-Ho, 2021, New records of three monogonont and seven bdelloid rotifers from Korea, Journal of Species Research 10 (4), pp. 392-404 : 399

publication ID

https://doi.org/ 10.12651/JSR.2021.10.4.392

DOI

https://doi.org/10.5281/zenodo.13139205

persistent identifier

https://treatment.plazi.org/id/03BE87BE-C42D-4926-F2E5-A4FF568AF81B

treatment provided by

Felipe

scientific name

Otostephanos torquatus amoenus Milne, 1916
status

 

7. Otostephanos torquatus amoenus Milne, 1916 View in CoL ( Fig. 7 View Fig )

DƋIJ÷åŀqĒÊệ (ṵḋ)

Otostephanos torquatus var. amoenus Milne, 1916 View in CoL , pp. 173, 174, pl. 14, figs. 20, 20a.

Otostephanos torquatus amoenus View in CoL : Donner, 1965, p. 100, figs. 72j, l.

Material examined. Three specimens sorted out from mosses at Galcheon-ri, Seo-myeon, Yangyang-gun, Gangwon-do, 37°54′3.0″N, 128° 30′6.4″E, 1 August 2020.

Diagnosis. Body finely granulated and brownish. Rostrum short. Rostral lamella bilobed and with narrow median interspace between them. Corona as wide as or slightly narrower than cingulum. Sulcus very narrow. Upper lip arched and with triblobed median lobe; median lobe rimmed; much lower than trochal discs. Fine ring between corona and upper lip without disconnection. Spurs conical and with narrow interspace.

Measurements. Total length in creeping 259 μm. Corona width 25 μm. Cingulum width 24 μm. Cingulum pad width 26 μm. Greatest trunk width in feeding 53 μm. Spur length 6.4 μm.

Remarks. The most prominent difference between Otostephanos torquatus amoenus and O. t. torquatus (Bryce, 1913) appears in the morphology of the upper lip. The median lobe of the upper lip is simply arched in O. t. torquatus , while it is trilobed in O. t. amoenus. Otostephanos t. torquatus has been reported from Korea by Song (2015).

This subspecies has been reported from Austria, Czech Republic, Poland and Ukraine ( Donner, 1965; Iakovenko et al., 2013) after the description from South Africa ( Milne, 1916). The present study is the first report of this subspecies from Asian fauna.

World distribution. Austria, Czech Republic, Korea, Poland, Ukraine and South Africa.

Deposition. Deposited in the collection of the National Institute of Biological Resources, Incheon, Korea ( KDELIV 0000003105 ) .

Kingdom

Animalia

Phylum

Rotifera

Class

Eurotatoria

Order

Bdelloidea

Family

Habrotrochidae

Genus

Otostephanos

Loc

Otostephanos torquatus amoenus Milne, 1916

Song, Min Ok & Lee, Chang-Ho 2021
2021
Loc

Otostephanos torquatus amoenus

Donner, J. 1965: 100
1965
Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF