Oligaphorura ursi (Fjellberg, 1984)

Babenko, Anatoly B. & Fjellberg, Arne, 2015, Subdivision of the tribe Oligaphorurini in the light of new and lesser known species from North-East Russia (Collembola, Onychiuridae, Onychiurinae), ZooKeys 488, pp. 47-75 : 57

Taxon classification Animalia Collembola Onychiuridae

Oligaphorura ursi (Fjellberg, 1984)

Onychiurus ursi Fjellberg, 1984: 71.

Oligaphorura ursi (Fjellberg): www.collembola.org

Remarks.

Contrary to Oligaphorura groenlandica , Oligaphorura ursi , another northern circumpolar species of the genus, is common in the Magadan region inhabiting different wet sites above tree-line. Recently the species was redescribed on the basis of specimens from northern China ( Sun and Wu 2012a). We have some doubts about the identity of the Chinese and northern populations. Northern specimens usually have 6 long and four spiniform guard setae on the labial palp [versus 11 in Chinese specimens], ventral psx 10/000/212201+1m with frequent variations [versus 0/000/122200 in the Chinese ones] and at least one psx on each subcoxae, most usually 1-2-2 [versus completely absent]. Apart from this, it was said that the Chinese specimens had an identical number of setae on all tibiotarsi [versus 20-20-19 setae in northern populations].