Definition of "calypter"

calypter

noun
plural calypters
1. (biology, entomology) Either of two rounded lobes at the posterior base of the wing in many true flies.
  Quotations
  The acrosticals are irregularly paired, with numerous accessory setulae between the rows; the lower calypters protrude distinctly beyond the margin of the upper; […] .
  1947, Maurice T. James, Miscellaneous Publication 61: The Flies that Cause Myiasis in Man, U.S. Department of Agriculture, page 122
  The wings are hyaline and slightly smoky yellowish, while the calypters and wing fringes are pale yellowish (Steyskal, 1980).
  2002, Elen L. Aguiar-Menezes, Euripides B. Menezes, Paolo Cesar R. Cassino, Marco A. Soares, “12: Passion Fruit”, in Jorge E. Peña, Jennifer L. Sharp, M. Wysoki, editors, Tropical Fruit Pests and Pollinators, page 373
  Traditionally this taxon[Schizophora] is subdivided into Calyptratae and Acalyptratae, based respectively on the strong or reduced development of the lower calypter.
  2004, James B. Coupland, Gary B. Barker, “3: Diptera as Predators and Parasitoids of Terrestrial Molluscs, with Emphasis on Phoridae, Calliphoridae, Sarcophagidae, Muscidae and Fanniidae”, in G. M. Barker, editor, Natural Enemies of Terrestrial Molluscs, page 88