10 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Fossil Fornis 



Fossil records are too few to tell much about tingids in geologic 

 time. The molds of the species that became entangled and engulfed 

 in amber, both Baltic and Prussian, belong to existing genera, though 

 specifically representing quite different species. Most of the petrified 

 forms also belong to existing genera. Table 1 summarizes the distribu- 

 tion of fossil species. There are 6 genera and 9 species, plus 4 species 



Table 1. — Distribution of fossil genera" of Tingidae 



determined only as u Tingis sp." The genera not represented by 

 present-day species are mentioned below. 



Eotingis Scudder (1890, p. 359) was erected to hold antennata 

 Scudder (p. 360, fig.) from the United States (Florissant, Colorado. 

 Horizon, Oligocene) and Tingis quinquecarinata Germar and Berendt 

 (1856, p. 23, figs.), found in Prussian amber. Since T. quinque- 

 carinata is being transferred to the genus Cantacader of the subfamily 

 Cantacaderinae, this now leaves Eotingis with the genotype as its 

 only member. 



Cantacader quinquecarinatus (Germar & Berendt), new combination 



Tingis quinquecarinata Germar and Berendt, 1856, p. 23, fig. — Scudder, 1891, p. 449. 

 Eotingis quinquecarinata Scudder, 1890, p. 359; 1891, p. 406. 



Scudder (1890, p. 359) wrongly transferred Tingis quinquecarinata 

 Germar and Berendt to the genus Eotingis Scudder. The original 

 description and the two fine illustrations of T. quinquecarinata show 

 that species to be a typical member of the genus Cantacader Amyot 

 and Serville, and it is herein transferred. 



For an unusual fossil found in southern Russia, Bekker-Migdisova 

 (1953) created for its reception the name Tingiopsis reticulata in the 

 family Tingidae. A study of the venation of the hemelytron of tbis 

 fossil species shows that it does not fall into the classification of the 



