Enigmocarnus chloropiformis gen. et sp. nov., and parallel evolution of protandrial symmetry in Carnidae (Diptera)

Publication Type:Journal Article
Year of Publication:2007
Authors:M. Buck, Marshall S. A.
Journal:Annals of the Entomological Society of America
Date Published:January
ISBN Number:0013-8746
Accession Number:ZOOREC:ZOOR14303019722
Keywords:Carnidae, Carnus, chloropiformis, Enigmocarnus, genus description, male terminalia, Meoneura, morphology, phylogenetic systematic, species description, Texas, United States

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.

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