Coecobrya kennethi n. sp. (Collembola, Entomobryomorpha) and presence of Arrhopalites caecus (Tullberg, 1871) from Ana Roiho cave (Maunga Hiva Hiva), Rapa Nui-Easter Island.

Abstract

Anew species of Coecobrya Yosii, 1956 (Collembola, Entomobryomorpha, Entomobryidae) from a cave in Rapa Nui (Easter Island) is described. The new species can be distinguished from other species of the genus by the following characters: antenna relatively short, less than 4 times the cephalic diagonal; absence of smooth setae on ventral side of tibiotarsus; inner tooth of unguis at more than 1/3 of distance to basal ventral edge; unguiculus outer tooth smaller than the rest of unguiculus; absence of macrochaetae in group 6 on thoracic tergite II; four macrochaetae on central dorsal abdomen IV; smooth setae on manubrium posterior side; and 1+1 smooth setae on posterior face of ventral tube. The species A. caecus is frequently referred in the North hemisphere, and referred too in Australia and New Zealand, but this is the first record to Easter Island. The discovery of this two species resulted from the speleological work that was carried out in the cave Roiho, in the national park of Easter Island, Chile.