The genus was first identified by Robert McLachlan in 1894, who used the spelling Pseudœconesus, and named Pseudoeconesus mimus as the type species.

[2] Genetically, Pseudoeconesus forms a clade with three other Oeconesidae genera: Tarapsyche, Oeconesus and Zelandopsyche.

[3] McLachlan's original text (the type description) reads as follows: The species of this genus resemble Œconesus in a very remarkable manner, but the neuration of the ♂ is quite different.

1, 2, 3 and 5 are present, and the neuration is apparently regular (but abnormally irregular on one side in the only male before me).

It appears to me probable that Œconesus and Pseudœconesus may have affinity with the group of genera represented by Goëra, Silo, &c.[2]The genus is found in New Zealand.