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Diptera (7)
Milichiidae (3)
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Vibrissa
Seta on vibrissal angle, which is a ventral angular prominence of the facial ridge
Vibrissa
Edited by Irina Brake on Thu, 2009-09-10 15:17Definition:
Seta on vibrissal angle, which is a ventral angular prominence of the facial ridge
Character evolution:
In the stem-species pattern of the Chloropidae family-group, the vibrissa lies below the lower eye margin or level with it. This character state is present in the stem-species pattern of the Milichiidae too.
In the stem-species of the Milichiinae, the area of the vibrissal angle is smaller, and the position of the vibrissa has shifted to a position above the lower eye margin. This condition has been caused by the enlargement of the eyes in the stem-species of the Milichiinae (from Brake 2000).
