New faunistic and taxonomic data on oribatid mites (Acari: Oribatida) of Malaysia

Two new species of oribatid mites (Oribatida) of the genera Arcoppia Hammer, 1977 (Oppiidae) and Oxyamerus Aoki, 1965 (Oxyameridae) are described from Malaysia. Arcoppia malaysiaensis sp. n. differs from Arcoppia kaindicola by smaller body size and by the presence of long, blunt-ended interlamellar setae, well-developed notogastral setae c and long notogastral setae lm. Oxyamerus niedbalai sp. n. differs from all species of Oxyamerus by the presence of long and thick notogastral setae c. Twenty three oribatid species are recorded in Malaysia for the first time.