VI PREFACE 



name. This method of citation ehminates the necessity for a complete 

 literatm-e 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 Evacanthidae consists of 12 genera and 57 species. 

 This family may be characterized as follows: 



Includes robust leafhoppers 4.5-9 mm. in length. The head 

 characteristically has a median coronal and a median facial carina, 

 with a pair of additional convergent cariane on the crown. The ocelli 

 are located near the anterior margin of the crown, often in depressions. 

 A well-defined antennal ledge may or may not be present. The 

 pronotum has the lateral margins parallel or convergent anteriorly, in 

 dorsal aspect. The fore wing has no cross-vein in the anterior cell. 

 The hind wing has four apical ceUs. The hind tibial spines may have 

 well-developed or weak spines. The hind femoral setal formula is 

 2:1:1 in most species. The pygofer has processes, and the styles are 

 short. The species may be black or brown, sometimes marked with 

 yellow, or they may be green. Some species have been reported from 

 grass, and one species from hops. 



The following classification has been adopted for this family: 



Page 



Family Evacanthidae 1 



Subfamily Evacanthinae 2 



Subfamily Pythaminae 45 



Subfamily Signoretiinae 52 



The species have been recorded from the following zoogeographical 

 regions: 24 from the Palearctic Region, 1 from the Nearctic Region, 

 16 from the Oriental Region, 1 from the Austromalayan Region, 

 10 from the Malaysian Region, 2 from the Ethiopian Region, and 

 13 from two or more regions. 



The known geographic distribution of each species is indicated by 

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

 ographic regions designated by the same superscript figures. In 

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

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

 of large countries, where states and provinces are the smallest units. 

 In the larger island groups the individual islands are indicated 

 wherever possible in view of the miportance of island endemism. 



D. A. Young 

 for 

 Z. P. Metcalf 

 Raleigh, North Carolina 

 January 1960 



