Abstract
Two new species of oribatid mites of the genus Galumna (Oribatida, Galumnidae) are described based on specimens from upper soil and leaf litter in a primary evergreen lowland rainforest in Amazonian Peru. Galumna (Galumna) parazeucta n.sp. is morphologically most similar to Galumna (Galumna) neonominata Subias 2004 and G. (Galumna) pterolineata Hammer, 1972, but differs by the presence of strongly elongated notogastral porose areas Aa and A3. Galumna (Cosmogalumna) ekaterinae n.sp. is morphologically most similar to Galumna (C.) areticulata Ermilov, Sandmann, Klarner, Widyastuti and Scheu, 2015, but differs by the presence of three pairs of notogastral porose areas and epimeral setae 3c and 4c. The subgenus Galumna (Cosmogalumna) and species Galumna (Galumna) nuda Engelbrecht, 1972 are recorded in the Neotropical region for the first time; two species – Galumna (G.) angularis Jeleva, Scull and Cruz, 1984 and Galumna (G.) laselvae Balogh 1997 – are recorded in Peru for the first time.
Highlights
This work is a part of our continuing study of the Peruvian fauna of oribatid mites (Ermilov and Gwiazdowicz 2015; Ermilov and Friedrich 2016) and includes data on the genus Galumna Heyden, 1826 (Acari, Oribatida, Galumnidae).Among the oribatid mite material collected during the German Expedition to Amazonian Peru in 2013 were representatives of six species of Galumna belonging to two subgenera: Galumna (Galumna) Heyden, 1826 and G. (Cosmogalumna) Aoki, 1988
The main goal of this paper is to describe and illustrate two new species and present data on the records and overall known distribution of the registered taxa
Galumna is a very large genus that was proposed by Heyden (1826) with Notaspis alatus Hermann, 1804 as type species
Summary
This work is a part of our continuing study of the Peruvian fauna of oribatid mites (Ermilov and Gwiazdowicz 2015; Ermilov and Friedrich 2016) and includes data on the genus Galumna Heyden, 1826 (Acari, Oribatida, Galumnidae). Identification keys to selected species of Galumna (Galumna) were given by Shaldybina (1975), Balogh and Balogh (2002), Weigmann (2006), Bayartogtokh and Akrami (2014), Ermilov and Anichkin (2014b) and Ermilov et al (2015a, b); an identification key to Ermilov S.G. and Friedrich S. all known species of Galumna (Cosmogalumna) was presented by Ermilov and Corpuz-Raros (2015)
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