Damaeid Mites (Acari: Oribatei) from the Kushiro Wetland of Hokkaido, North Japan (II)

Abstract

Two new oribatid mites of the family Damaeidae are described from Hokkaido, north of Japan under the names of Dyobelba kushiroensis sp. nov. and Epidamaeus fortisensillus sp. nov. D. kushiroensis is related to Dyobelba carolinensis (Banks, 1947) in having the same setal formulae of legs except for the setal number of trochanter IV, but the former is distinguishable from the latter mainly by the absence of propodolateral and ventral tubercles. E. fortisensillus is related to its congeners which have the combination of the following characters: almost straight or somewhat isodiametric sensilli with dense barbs, knife-like notogastral setae, and the setal formula (famulus and solenidion not included) of tarsai I–IV: 20–18–18–15. E. fortisensillus differs, however, from them mainly in the presence of ventromedial tubercles, different size of body, and the shape of interlamellar setae.