A large European clearwing moth, Synanthedon scoliaeformis (family Sesiidae), associated with birch woods, and having an abdomen that is chiefly black with an orange tip.
Origin
Mid 19th century; earliest use found in Edward Newman (1801–1876), naturalist.
Definition of Welsh clearwing in US English:
Welsh clearwing
noun
A large European clearwing moth, Synanthedon scoliaeformis (family Sesiidae), associated with birch woods, and having an abdomen that is chiefly black with an orange tip.
Origin
Mid 19th century; earliest use found in Edward Newman (1801–1876), naturalist.