Forewings rather elongate-triangnlar, costa moderately arched, apex round-pointed, prominent, termen oblique, rather sharply concave on upper half, prominent in middle; reddish-ochreous, sprinkled with dark crimson, suffusedly irrorated with whitish except towards base and dorsal spot; a sharp white triangular dorsal spot before middle, reaching nearly half across wing, anterior side shortest, enclosing two dark reddish-fuscous dorsal dots : cilia reddish-ochreous, with dark reddish median line, basal half whitish-mixed.

[6] The type locality is around Awarua Bog and Tiwai Point[4] and this is where the smaller, more drab form of the species lives.

[5] The more colourful and patterned form of this species is found in the above stated range where its host plant is present.

[3] The host plant of the larvae of P. pyramidia in the type locality and the above-mentioned population in Rotorua is Leucopogon fasciculatus.

[6] P. pyramidia s.s. has been classified as having the "At Risk, Naturally Uncommon" conservation status under the New Zealand Threat Classification System.