Enigmocarnus chloropiformis gen. et sp. nov., and Parallel Evolution of Protandrial Symmetry in Carnidae (Diptera)

Authors: Buck, Matthias; Marshall, Stephen A.

Source: Annals of the Entomological Society of America, Volume 100, Number 1, January 2007 , pp. 9-18(10)

Publisher: Entomological Society of America

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Abstract:

Enigmocarnus chloropiformis Buck gen. et sp. nov. is described on the basis of a single male from east central Texas. The phylogeny of Carnidae is analyzed based on a matrix of 25 morphological characters, and a key to the World genera of Carnidae is presented. The new genus is characterized by a reduced head chaetotaxy (bristles short and mostly pale), notable gray pruinosity of the body, and a unique configuration of pregenital sclerites (the protandrium), which precludes placement of this species in any previously described genus of Carnidae. Enigmocarnus possesses a nearly symmetrical protandrium like Carnus and Meoneura, but the position of sternite 7 indicates that symmetry evolved independently and on a different path. The protandrial peculiarities exhibited by Enigmocarnus are discussed in the framework of Carnoidea relationships.

Keywords: Carnidae; new genus; phylogeny; protandrium; symmetry

Document Type: Research article

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