A new sexually dimorphic species of Machadobelba (Acari, Oribatida, Machadobelbidae) from Malaysia

G. Ermilov, Sergey; S. Subías, Luis; Ya. Shtanchaeva, Umukusum; Kalúz, Stanislav

doi:10.22073/pja.v14i2.86956

A new sexually dimorphic species of Machadobelba (Acari, Oribatida, Machadobelbidae) from Malaysia

Authors

Sergey G. Ermilov ¹

Luis S. Subías ²

Umukusum Ya. Shtanchaeva ³

Stanislav Kalúz ⁴

¹ Tyumen State University, Tyumen, Russia

² 2. Complutense University, Madrid, Spain

³ Complutense University, Madrid, Spain

⁴ Institute of Zoology, Slovak Academy of Sciences, Bratislava, Slovakia

10.22073/pja.v14i2.86956

Abstract

Machadobelba (Oribatida, Machadobelbidae) currently comprises 18 species collectively distributed in the Afrotropical, Neotropical, and Oriental regions. We describe a new species—M. bimorpha sp. nov.—based on adults collected from forest litter in Malaysia. The new species is characterized by the morphology of the rostral (short, phylliform, shortly ciliated distally in males versus medium-sized, setiform, sparsely barbed in females), bothridial (bifurcate), and notogastral (dilated mediodistally) setae, the presence of two anoadanal porose areas in males (versus absent in females), two long, longitudinal ridges in anterior part of the prodorsum, and the length of the costula (shorter than half of prodorsum).

Keywords

Machadobelbid oribatid mites

morphology

Oriental region

Southeast Asia

taxonomy