Hypertext Webster Gateway: "Perla"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Platyptera \Pla*typ"te*ra\, n. pl. [NL., fr. Gr. ? broad + ? a
wing.] (Zo["o]l.)
A division of Pseudoneuroptera including the species which
have four broad, flat wings, as the termites, or white-ants,
and the stone flies ({Perla}).
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