[1] The specific name is derived from the Fijian word meaning "thank you" or "hello".

The body is a yellowish or light orange brown, densely covered in short hairs, but with longer, erect hairs interspersed.

[1] The species is only known from Mount Tomanivi on the Fijian island of Viti Levu, but is believed to also inhabit the islands of Taveuni and Vanua Levu.

[1] Individuals were collected from leaf litter and decaying wood from undisturbed rainforest half way up the mountain.

[1] P. vinaka is part of the P. silaceum clade.