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Postpronotum

Posterior part of pronotum

Postpronotum

Submitted by Irina Brake on Sat, 2008-07-12 09:21
Definition: 

Posterior part of pronotum (ex McAlpine 1981)

Explanation: 

The postpronotum, better developed in higher Diptera, is usually intimiately associated with the mesonotum, and its posterolateral margins form the postpronotal lobes (humeri, humeral calli). The number, size, and position of the postpronotal (humeral) setae provide useful taxonomic characters in many groups throughout the order, especially in higher Diptera (ex McAlpine 1981)

Character evolution: 

In the stem-species pattern of the Chloropidae family-group there is one postpronotal seta, but in Eusiphona, Microsimus, and Pholeomyia there are two such setae. The presence of more than one postpronotal setae probably evolved three times (ex Brake 2000).

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