Radumeris tasmaniensis

Appearance

Females yellow-flower wasps (Radumeris tasmaniensis) are about 30 mm long with a 40 mm wingspan and have a large robust body with a broad abdomen. Size range of males in New Zealand is 11.5 - 20.5 mm long. Males have a more slender body with a narrow abdomen. Females have a dark brown thorax, a narrow waist and a broad orange abdomen with narrow black stripes. Their underside has wide black stripes with narrow white stripes. Males have alternating black and yellow stripes on both the upper and lower surfaces. The female has short antennae about the same length as the width of the head; the male has longer antennae, about half the length of the forewings. Both male and female have orange to brownish wings, with very fine veins towards the wing tips.