Additions to the galumnid oribatid mite fauna of Brazil, with description of two new species of Trichogalumna (Acari, Oribatida, Galumnidae)

Abstract

An annotated checklist of the Brazilian Galumnidae is provided; it includes 11 species and four genera. The genus Trichogalumna and two species, Carinogalumna genavensium and Pergalumna bifissurata, are recorded for the first time in Brazil. Two new species of Trichogalumna, T. albomaculata sp. nov. and T. atypica sp. nov., are described and illustrated on the basis of adult specimens. Trichogalumna albomaculata sp. nov. is distinguishable from other species of the genus by the combination of the following character states: bothridial setae fusiform, barbed; three pairs of notogastral porose areas present (A2 absent); surface of notogaster and ventral side with internal light spots. Trichogalumna atypica sp. nov. is distinguishable from other species of the genus by the setiform bothridial setae (versus with the developed head of bothridial setae).

http://zoobank.org/urn:lsid:zoobank.org:pub:FE2D7E17-055A-4024-BAD8-9ABE3735B3AD

Keywords:

• oribatid mites
• Galumnidae
• Trichogalumna
• new species
• new record
• Brazil

Acknowledgements

We cordially thank Prof. Dr Badamdorj Bayartogtokh (National University of Mongolia, Ulaanbaatar, Mongolia) and two anonymous reviewers for the valuable comments.

Notes

1. Subías (2004, updated 2014) considered the genus Sarawakiella Mahunka, 1996 (with S. longipilosa Mahunka, 1996 – see Mahunka 1996) as a subgenus of Trichogalumna; however, presently we do not support this opinion.

2. See mostly Subías (2004, updated 2014).