Oribatid mites (Acari, Oribatida) from riverine environments in New Caledonia

G. Ermilov, Sergey; J. Mary, Nathalie

doi:10.22073/pja.v14i3.87161

Oribatid mites (Acari, Oribatida) from riverine environments in New Caledonia

Authors

Sergey G. Ermilov ¹

Nathalie J. Mary ²

¹ University of Tyumen, Institute of Environmental and Agricultural Biology (X-BIO), Tyumen, Russia

² Etude des Hydrosystèmes Continentaux tropicaux (ETHYC’O), Nouméa, New Caledonia

10.22073/pja.v14i3.87161

Abstract

The present study is based on oribatid mite materials collected from benthic samples in four river locations on the Grande Terre Island, New Caledonia. A list of eight species, belonging to six genera and five families, is presented; among them are taxa that are new for the fauna of New Caledonia. One new species of the genus Trhypochthoniellus (Trhypochthoniidae)—T. grandensis sp. nov.— is described; it is mainly characterized by the nasiform rostrum having ridges; slightly polygonate ornamentation on the notogaster and in the anogenital region; the absence of the bothridial seta and bothridium; the relative length of prodorsal setae: in ˃ le ˃ ro; 14 pairs (p₃ absent) of the notogastral setae setiform (except f₁ as alveolus), nearly smooth; the relative length of the notogastral setae: c₃, e₂, h₁, h₂, p₂˃ cp, e₁, h₃, p₁˃ d₂˃ c₁, c₂, d₁, f₂; six pairs of genital setae.

Keywords

Australasian region

fauna

morphology

new record

taxonomy

Trhypochthoniellus