Girish Mahajan (Editor)

Choristotanyderus

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Kingdom  Animalia
Class  Insecta
Family  Permotanyderidae †
Scientific name  Choristotanyderus nanus
Phylum  Arthropoda
Order  Protodiptera †
Genus  Choristotanyderus †
Similar  Hangingfly, Panorpa, Panorpidae, Mecoptera

Choristotanyderus is an extinct, monotypic genus of protodipteran insect containing a single species, Choristotanyderus nanus which lived during the Permian period. The genus and species were first described by Edgar Frederick Riek in 1953 from a specimen found in New South Wales, Australia. It is considered a transitional form between Mecoptera and Diptera. The genus is placed in the protodipteran family Permotanyderidae with the related genus Permotanyderus.

Morphology

Choristotanyderus, despite being closely related to Diptera, retained four wings, with the hind wings being about one third as long as the forewings. These wings show the characteristic kink at the base of the R vein which is diagnostic of Diptera, but other venation patterns were more characteristic of Mecoptera . The third thorax segment was also reduced, which has been considered another intermediate feature between the Mecoptera and the Diptera .

References

Choristotanyderus Wikipedia


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