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Male genitalia of Exeretonevra Macquart (Diptera: Xylophagidae): Structure, function and phylogenetic implications by Christopher M Palmer; Olga G Ovtshinnikova; David K Yeates is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract The search for phylogenetically informative, adult morphological characters to clarify the relationships of the xylophagid genus __Exeretonevra__ with other members of the lower Brachycera has yielded few synapomorphies. In this study, the male genital musculature of __Exeretonevra angustifrons__ Hardy is examined and compared with other members of the lower Brachycera to ascertain whether this data set can support the inclusion of __Exeretonevra__ in the infraorder Xylophagomorpha. Most genitalic muscle complexes of __Exeretonevra__ conform to the plesiomorphic brachyceran configuration, with those of the cerci, epandrium and hypandrium possessing some apomorphic features. Although larval morphology and molecular evidence conclusively place __Exeretonevra__ in the Xylophagidae, the male genital musculature suggest an affinity with the superfamily Asiloidea (infraorder Muscomorpha). In particular, __Exeretonevra__ is the only taxon outside the infraorder Muscomorpha with a third tergosternal muscle bundle M5^3^ present. No synapomorphies of genital musculature support the inclusion of __Exeretonevra__ within the Nemestrinidae, a placement that has been supported by prev

Who reads Male genitalia of Exeretonevra Macquart (Diptera: Xylophagidae): Structure, function and phylogenetic implications?

Author

Christopher M Palmer; Olga G Ovtshinnikova; David K Yeates

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 1326-6756)

Published

2000

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)