Definitions
Century Dictionary and Cyclopedia
- n. The carpus or stigma, a peculiar mark or spot on the wings of some insects. It is a dark-colored triangular or quadrate space on the anterior border of the fore wings of hymenopters, and on both fore and hind wings of dragon-flies. It corresponds to that one of the costal cells which is thickened to strengthen the costal border.
Wiktionary
- n. zoology A cell in the outer wing of insects which is often thickened or coloured and so stands out from other cells.
GNU Webster's 1913
- n. (Zoöl.) A thickened opaque spot on the wings of certain insects.
Etymologies
- Ancient Greek πτερόν (pteron) + στίγμα (stigma), meaning "wing mark". (Wiktionary)
Examples
“Carpus: the pterostigma of Odonata: the extremity of the radius and cubitus of the primaries: that point in the wings at which they are tratsversely folded.”
“Parastigma: = pterostigma; q.v. Parastigmatic glands: small, circular glands, which secrete a waxy powder, sometimes present around the spiracles of Coccidae.”
“Apical cells or cellules: Trichoptera; the series of cells along the outer margin of wing from pterostigma to arculus.”
“Without the pterostigma, self-exciting vibrations would set in on the wing after a certain critical speed, making gliding impossible. ”
Lists
These user-created lists contain the word ‘pterostigma’.
Tweets
Looking for tweets for pterostigma.
Comments
No comments yet...
Log in or sign up to get involved in the conversation. It's quick and easy.