Persian Journal of Acarology

Persian Journal of Acarology

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

Document Type : Original Article

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
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Persian Journal of Acarology
Volume 14, Issue 2
Spring 2025
Pages 335-343