VI INTRODUCTION 



adopted which differs from that used in the catalogues of the f ulgoroid 

 families. References are cited by author, year, and key letter, e.g., 

 Fabricius 1802a. The full reference can be obtained by consulting 

 the Bibliography of the Cicadelloidea, in which authors are arranged 

 alphabetically, and their works chronologically under the author's 

 name. This method of citation eliminates the necessity for a com- 

 plete literature citation in the catalogue proper, and thus saves time, 

 space, and publication costs. It is believed that the revised method 

 will cause no great inconvenience to the reader. Dr. Metcalf himself 

 advocated it under certain conditions, and it is felt that he would have 

 approved its use for his catalogues. 



The Family Ulopidae consists of 29 genera and 93 species. This 

 family may be characterized as follows : 



Small, brown leafhoppers. Dorsum of head and pronotum, and 

 surface of fore wings with numerous pits and often with short, white 

 setae. Head with antennal ledges prominent, curved ; clypellus often 

 long, narrow ; transclypeal sulcus distinct ; maxillary sutures usually 

 present, not always distinct; eyes prominent, usually bulbous; ocelli 

 absent or present in varying locations. Pronotum with a pair of 

 anterolateral depressions; scutellum with a distinct sulcus. Fore 

 wings occasionally greatly reduced; hind wings occasionally absent. 

 Hind tibiae with macrosetae arising from elevated bases. 



A number of species live near the ground at the base of grasses, 

 rushes, and other plants, and some have been reported feeding at 

 the surface on the roots. Many species are poor flyers, and in some 

 the function of flight has been lost. Many are also poor jumpers. 



The following classification has been adopted for this family : 



Page 



Family Ulopidae 1 



Subfamily Megophthalminae 7 



Tribe Megophthalmini 13 



Subfamily Cephalelinae 38 



Subfamily Ulopinae 50 



Tribe Bobacellini 94 



The species have been recorded from the following zoogeographic 

 regions : 6 from the Nearctic Region, 1 from the Caribbean Region, 1 

 from the Neotropical Region, 20 from the Palearctic Region, 24 from 

 the Ethiopian Region, 11 from the Oriental Region, 1 from the Ma- 

 laysian Region, 24 from the Australian Region, and 5 from the Maorian 

 Region. 



The known geographic distribution of each species is indicated by 

 superscript figures at the end of the lines, which correspond to geo- 

 grapliic regions designated by the same superscript figures. In gen- 

 eral the distribution is as given by the author of the reference, the 

 country being considered the smallest unit, except in the case of large 



