Adult head structures of Deuterophlebiidae (Insecta), a highly derived "ancestral" dipteran lineage

Arthropod Structure & Development
Katharina SchneebergRolf Georg Beutel

Abstract

Adult head structures of Deuterophlebia coloradensis were examined, 3-dimensionally reconstructed and described. The results are compared to those of other representatives of basal dipteran lineages, primarily Nymphomyia dolichopeza (Nymphomyiidae) and Edwardsina gracilis (Blephariceridae). The head structures are extremely simplified. The labrum, mandibles, maxillae and labium are completely reduced. Only eight pairs of muscles are present. These modifications are possibly linked with the extremely short life span and non-feeding of adults. Possible synapomorphies of Deuterophlebiidae + Nymphomyiidae are the loss of all mouthparts, the elongation of the terminal antennal segment, and the loss of M. tentoriobuccalis anterior. An alternative placement of Deuterophlebiidae as sister group of Blephariceridae is only suggested by the origin of M. tentorioscapalis posterior on the vertex. Blephariceromorpha (Deuterophlebiidae, Nymphomyiidae, Blephariceridae) is only weakly supported by features of the adult head. The missing frontoclypeal and clypeolabral suture and the origin of M. tentorioscapalis on the head capsule are potential autapomorphies. Our results do not support a sister group relationship between Deuterophlebiidae and ...Continue Reading

References

Mar 12, 2004·Annual Review of Entomology·D K Yeates, B M Wiegmann
Mar 6, 2008·Annual Review of Biochemistry·Frank AlberAndrej Sali
Jun 17, 2008·Arthropod Structure & Development·Rolf G BeutelMichael F Whiting

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Citations

Dec 14, 2011·Annual Review of Entomology·Michelle D TrautweinDavid K Yeates
Feb 22, 2012·Arthropod Structure & Development·Katharina SchneebergRolf G Beutel
Sep 13, 2013·Journal of Morphology·Katharina SchneebergRolf G Beutel
Feb 5, 2019·ZooKeys·Jade SavageJeffrey H Skevington

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