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A new family of astigmatid mites from the lies Crozet, sub‐Antarctica; introducing a new concept relating to ontogenetic development of idiosomal setae
Author(s) -
Griffiths D. A.
Publication year - 1977
Publication title -
journal of zoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.915
H-Index - 96
eISSN - 1469-7998
pISSN - 0952-8369
DOI - 10.1111/j.1469-7998.1977.tb03911.x
Subject(s) - seta , biology , zoology , ancestor , ontogeny , evolutionary biology , ecology , geography , genetics , archaeology , genus
Glycacarus combinatusgen . and sp. nov . was collected from the nest of the White chinned petrel ( Procellaria aequinoctialis ) on Possession Island Sub‐Antarctica. It can be distinguished from all other members of the Astigmata by the M‐shaped prodorsal shield and by the fact that it is made up of a complete mixture of the morphological characters which separate the Glycyphagidae from the Acaridae. In order to maintain the present familial structure within the free‐living Astigmata a new family Glycacaridae is proposed. It is suggested that these three families arose from three evolutionary lines which separated from a common ancestor possibly during the Cretaceous period. Ontogenetic development of the body setae is described and a new interpretation of setal homologies relative to different life‐cycle stages is discussed, together with a revised nomenclatural system for the idiosomal seta.