TY  - JOUR
JF  - Acarologia
T1  - Two unusual new species of Caleremaeus (Acari: Oribatida) from eastern North America, with redescription of C. retractus and reevaluation of the genus
VL  - 60
IS  - 2
SP  - 398
EP  - 448
PY  - 2020
SN  - 0044-586X
SN  - 2107-7207
PB  - Les Amis d'Acarologia
AU  - Norton, Roy A.
AU  - Behan-Pelletier, Valerie M.
UR  - https://doi.org/10.24349/acarologia/20204375
DO  - 10.24349/acarologia/20204375
DA  - 2020-05-11
ET  - 2020-05-11
KW  - Nearctic soil mite
KW  - arboreal fauna
KW  - Caleremaeidae
KW  - eupheredermous juveniles
AB  - The oribatid mite genus Caleremaeus (Caleremaeidae) is widely distributed in the northern hemisphere but has been represented by only three extant and one fossil species. We redescribe the North American C. retractus (Banks, 1947) based on adults and nymphs; it is distinguishable from the European type species, C. monilipes (Michael, 1882) by its smaller adult size and minor differences in cuticular structure, and by the elongated, tapered form of seta h<SUB>1</SUB> in nymphs. Two new species are proposed: C. nasutus n. sp. from forest soil in Alabama is unique in having adults with a large anterior rostral lobe (juveniles unknown) bearing lamellar setae; the arboreal C. arboricolus n. sp. from eastern USA and Canada is unique among described extant species in having adults with femoral saccules, a transverse ridge bearing lamellar setae and relatively large notogastral setae, and juveniles with a bothridial seta similar to that of the adult. Based on all available data, Caleremaeus is redescribed and considered the sole genus in Caleremaeidae. The higher classification of the family is reviewed, and past placement in Ameroidea is rejected in favor of the monofamilial Caleremaeoidea.
ER -