There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
Abstract
The adult instar of the oribatid mite, Galumna obvia (Berlese, 1914), is redescribed
in detail, on the basis of specimens from Finland. The morphology of juvenile instars
of G. obvia is described and illustrated for the first time, and compared to that
of other species of the family Galumnidae. The position of the insertion of the lamellar
seta in adults proved variable in studied European populations, being either on or
medial to the lamellar line. Since the genera Galumna and Pergalumna are currently
distinguished only by the relative positions of the seta and line, specimens of G.
obvia in some populations show an intermediate situation between other studied Galumna
species – with lamellar seta on or lateral of lamellar line – and Pergalumna with
lamellar seta at a distinct distance medially of lamellar line. A detailed reevaluation
of the two genera is needed.