Assertion: dragonfly's wing | /r/HasProperty | pterostigma
Facets:
Source sentences:
text: Triangles, 18: Rear wing, 19: Front wing, 20: Pterostigma, 21: Postnodal cross-veins, 22 :
text: Species markers include quadrangular markings on the wings known as the pterostigma or stigma, and in almost all species, there is a nodus near the leading edge.
text: Triangles, 18: Rear wing, 19: Front wing, 20: Pterostigma, 21: Postnodal cross-veins, 22 :