- orange antennae, longer than distance between insertions
- black head, dorsal yellow patch on vertex
- orange pronotum
- shining black mesoscutum
- smooth, hairless, yellow scutellum with small hind lobes
- dorsum of abdomen shining greenish black
- forewings pale brown hyaline
- hind femora dark orange, apex black on dorso-medial side
- hind tarsus shorter than hind tibia

- genae black with orange dorsal patch, pilose
- clypeus and labrum orange
- mandibles black and chestnut with tips black
- pronotum dark yellow, pilose dorsally
- mesepisternum black with large central pale yellow patch, moderately heavily punctate
- mesepimeron black
- metepimeron white
- metepisternum black
- mesosternum shiny black, unpunctured
- lateral folds of terga, venter shiny green black, unpunctured
- sawsheath orange with pale yellow hairs, with considerable space between each hair, tips of hairs spoon-shaped
- saw (lance and lancet) dark orange
- coxa black basally, pale yellow apically
- all femora dark orange
- all tibiae orange

- antennal flagellum orange, scape black and orange, pedicel orange
- inner orbits, genae black, strongly punctated
- mesosternum, lateral folds of terga and venter shining black
- sawsheath orange with pale yellow hairs
- all coxae yellow with paler medial sides
- all femora orange with hind femora dark orange
- all tibiae and tarsi orange

body length 22mm

sawsheath in #PW043 Perga affinis‍ (iNaturalist observation, Chris Seager)
- hairs on sawsheath are more closely spaced than in P. dorsalis and lack their spoon shape