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Amphiesmenoptera

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Title: Amphiesmenoptera  
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Subject: Eocoronidae, Lepidoptera, Reference desk/Archives/Science/2015 October 6, Neoptera, Pterygota
Collection: Insect Superorders, Insects
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Amphiesmenoptera

Amphiesmenoptera
Celastrina argiolus (Lepidoptera)
Micropterna sequax (Trichoptera)
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Superorder: Panorpida
(unranked): Amphiesmenoptera
Kiriakoff, 1948
Subgroups

Amphiesmenoptera is an insect superorder, established by S. G. Kiriakoff,[1] but often credited to Willi Hennig in his revision of insect taxonomy for two sister orders: Lepidoptera (butterflies and moths) and Trichoptera (caddisflies).

Trichoptera and Lepidoptera share a number of derived characters (synapomorphies) which demonstrate their common descent:

  • Females, rather than males, are heterogametic (i.e. their sex chromosomes differ).
  • Dense setae are present the wings (modified into scales in Lepidoptera).
  • There is a particular venation pattern on the forewings (the double-looped anal veins).
  • Larvae have mouth structures and glands to make and manipulate silk.[2]

Thus the two sister orders are grouped into the Amphiesmenoptera. The group probably evolved in the Jurassic, diverging from the extinct Necrotaulidae.[2] Lepidoptera differ from the Trichoptera in several features, including wing venation, form of the scales on the wings, loss of the cerci, loss of an ocellus, and changes to the legs.[2]

Amphiesmenoptera are thought to be the sister group of Antliophora, a proposed superorder comprising Diptera (flies), Siphonaptera (fleas) and Mecoptera (scorpionflies). Together, Amphiesmenoptera and Antliophora compose the group Mecopterida.[3]

References

  1. ^ S. G. Kiriakoff (1948). "A classification of the Lepidoptera and related groups with some remarks on taxonomy". Biologisch Jaarboek 15: 118–143. 
  2. ^ a b c D. Grimaldi & M. S. Engel (2005). Evolution of the Insects.  
  3. ^ M. F. Whiting, J. C. Carpenter, Q. D. Wheeler & W. C. Wheeler (March 1997). "The Strepsiptera problem: phylogeny of the holometabolous insect orders inferred from 18S and 28S ribosomal DNA sequences and morphology".  
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