Phylogenetic studies suggest that this species diverged from P. eupatria. Monotypic.
Although evidently common in the early years of the 19th century, the last specimen was shot on Mahé in 1893. The species may have survived into the 20th century, but was apparently extinct by the time Nicoll visited Mahé in 1906. The main causes of its demise seem to have been forest clearance (for coconut plantations) and, especially, shooting and trapping, in particular, to protect maize (Zea mays) crops.
Seychelles: Mahé and Silhouette, with a sight record from Praslin. At least ten specimens exist.