A new subgenus and two new species of the oribatid mite genus Eurhynchoribates (Acari, Oribatida, Rhynchoribatidae) from the Philippines

Abstract

The oribatid mite genus Eurhynchoribates (Oribatida, Rhynchoribatidae) is recorded in the Philippines for the first time. Two new species are described from litter and soil of secondary forests. Eurhynchoribates samarensis sp. nov. differs from all species of the genus by the presence of 14 pairs of notogastral setae, and is designated as type species of the new subgenus Orinchobates subgen. nov. Eurhynchoribates (Eurhynchoribates) misamisensis sp. nov. is morphologically similar to E. (Eurhynchoribates) obtusus (Mahunka, 1985), but differs by the smaller body size, rostral setae clearly longer than lamellar setae, all barbed, and the presence of two transverse ridges between antero-lateral concavities on the prodorsum. The inclusion of Eurhynchoribates orientalis (Balogh, 1970) in the subgenus Orinchobates is proposed.