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A Phylogenetic Study 



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Fig. 7. Head of a larval Trichopteron. 



Fig. 8. Head of the Dipteron Heteromyia (Ceratopogon) trivialis, Loew. 



Fig. 9. Head of the Mecopteron Merope tuber (male). 



Fig. 10. Head of a larval Panorpa (Mecopteron). 



Fig. 11. Head of the Trichopteron Neuronia. 



Fig. 12. Head of a larval Raphidia (Neuropteron). 



Fig. 13. Head of a larval Tipulid. 



Fig. 14. Head of the Dipteron Bittacomorpha (based upon the species clavipes and 

 another Bittacomorpha) . 



