What is "aphantophryne"

Aphantophryne is a genus of microhylid frogs endemic to New Guinea. Originally described by Fry in 1917, Richard G. Zweifel considered in 1956 Aphantophryne synonymous to Cophixalus. The genus was resurrected in 1989 to house two new species in addition to the type species, A. pansa.

Aphantophryne are small frogs, the maximum snout-to-vent body length is 31 mm for A. pansa and 24 mm for A. sabini. The smallest species A. minuta has the body length of only 12 mm. Females are larger than males. The distinguishing feature of Aphantophryne when compared to other genyophrynine genera is the number of presacral vertebrae: Aphantophryne has seven while the other genera have eight.