A new egg-guarding species of Oreophryne (Amphibia, Anura, Microhylidae) from southern Papua New Guinea

A new microhylid frog in the genus Oreophryne is described from southern New Guinea. It is a small species (males to 22 mm snout-urostyle length (SUL), females to 27 mm SUL) distinguished from congeners by having a cartilaginous connection between the procoracoid and scapula, no webs between fingers, basal webs mainly between toes 3 and 4 and between toes 4 and 5, and the fifth toe slightly longer than the third. In life, most specimens have a conspicuous lime green (yellowish in preservative) bar between the eyes, a lime green and irregular longitudinal stripe on the flanks, and an irregular spot of the same colour above the insertion of the upper arms. The advertisement call is a pronounced rattle lasting about one second with a note repetition rate of 26-28 notes per second. Males of the new species guard the eggs of their mates on the underside of leaves hanging 30-400 cm above the ground.