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a bite 
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(1) 
(4) 
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(6) 
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£19 
Antennal flagellum not segmented. Lateral ocelli outside the 
lateral carinae of frons, generally beneath the eyes; lorae not 
visible in full view or forming an angle with clypeus. 
Hind tibiae with a mobile spur at apex. Tegmina without a 
costal area ..... epee TN ey Bo of ch ose aye fein Pele «eves Delphacidae 
Hind tibiae without a mobile spur. 
Whiree Gee liapresenite .'6 oo fi as cle's cis dae 6 ss vies Cixtidae in part 
Two or no ocelli. 
Posterior angle of mesonotum restricted off by a groove or fine 
line. Costal area present or absent............ Tropiduchidae 
Posterior angle of mesonotum not restricted off by a groove or 
fine line. 
Anal area of wings reticulate. Lateral carinae of frons con- 
tinued on to clypeus. No costal area, or only a very narrow 
one without cross-veins. Clavus open, the Cu 2 (Claval suture) 
and claval veins continuing to apical-or hind margin and often 
| anpeaVel avers lo Seenha e Gicr Cicceers Ob rence ntTAT Coen a eae Fulgoridae 
Anal area of wings not reticulate or, if so, then lateral carnae 
of frons not continued on to the clypeus. 
Face transverse or nearly as long as wide, lateral edges angular. 
Anal area of wings sometimes reticulate, in which case no 
lateral carinae on clypeus. With or without costal area. Clavus 
often roundly closed; claval veins reaching apex of clavus, 
the suture (Cu 2) and claval veins continuing to the apical 
or hind margin, and sometimes branched....... Eurybrachidae 
Lateral edges of face not angular or, if so, then face distinctly 
longer than wide. 
Tegmina without a costal area, or only a small one without 
transverse veins. 
Claval vein not entering apex of a closed clavus, but joining the 
commissure or suture before apex, or the clavus is open. 
Apical segment of labium short or very short (Venata an excep- 
In)” St Aide Od occ CAS TIES CA Ond Le 6o Cee nC EIEIse Derbidae 
Apical segment of labium much longer than wide, sometimes 
very long. 
Sides of clypeus acute or with carinae. Apart from the lateral 
edges, frons generally with two or three carinae. 
Dictyopharidae 
Apart from the lateral edges, the froris with not more than one 
(median) carina. Sides of clypeus rounded, without carinae. 
Cixtidae in part 
Claval vein entering apex of clavus. 
