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PROCEEDINGS OF THE NATIONAL MUSEUM 



* V NEOGAEA 



Figure 2. — Faunal realms of the world. 



The genera and species of living tingids as they are known today 

 are treated chorologically in table 2. There appear to be no truly 

 relict species. Morphologically, the Cantacaderinae represent the 

 oldest and most primitive subfamily, and two of its genera are 

 well represented by both living and fossil forms. The genus Dictyla 

 of the subfamily Tinginae contains more species and is more widely 

 distributed than any other genus of this subfamily comprising both 

 extinct and living species. 



The literature shows that certain regions such as Europe, North 

 America, Brazil, Belgian Congo, and Japan have received more 

 attention taxonomically than many other areas. Tingids are poorly 

 known from many islands of the South Pacific and Indian Oceans. 

 Many parts of the Orient, Africa, and South America have also 

 received scant consideration. 



The circular graphs (figs. 4, 5) depict the genera and species by 

 faunal subregions. The Ethiopian subregion is represented by 296 

 species divided among 65 genera, the Oriental by 256 species among 

 67 genera, and the Neotropical by 594 species among 60 genera. The 

 larger genera in the Neotropical indicate that many genera of this 

 subregion are less primitive than those found in the Ethiopian and 

 Oriental regions. 



