bie N. C. AGR. EXP. STA. BUL. 239 
CICADELLA GENERIC GROUP 
74. Cicadella 
75. Chlorogonalia 
76. Draeculacephala 
77. Carneocephala 
qui ame tan ee one Of Ta oe 
| 69. Plerogonalia, 78. Tylozygus 80. Plesiommata 
— = == 1 ow we ee owe 
79. Ciminius 
81. Helochara 
82. Syncharina 
83. Helocharina 
Morcos (1953a) gave an account of the biology of Cicadella viridis (L.) in 
England, reporting that there is only one generation per year, and that the 
eggs were laid in Juncus effusus L. 
Frediani (1954a, 1956a - see Young, Part 1, p. 273) made a study of the 
variability of the chaetotaxy of the hind femur, and (1955a, see Literature 
Cited, below) a more complete study of the morphology and bionomics of 
Cicadella viridis (L.). In Pisa, Italy, he found three generations and a partial 
fourth each year. Eggs of the summer generations were laid in non-woody 
plants, but the eggs of the third generation were deposited in rose twigs. 
Frediani cites other workers who listed both herbaceous and woody plants for 
ovipositional sites for viridis. He cites Balachowsky (1941a) for evidence that 
viridis feeds on Phragmites, Arundo and Juncus in France and Goidanich (1938a) 
for evidence that sugarcane is a food plant and Servadei (1948a) for evidence 
that viridis feeds on cultivated and wild grasses. Frediani himself found 
Agropyron repens (L.) to be a food plant. 
SPECIES OF CICADELLA 
(I have not seen types of any of the following nominal species) 
viridis (Linnaeus), 1758a:438 (Cicada). See text for distribution. 
arundinis (Germar), 1821a:71 ( Tettigonia). 
melanchloa (Walker), 1851b:778 ( Tettigonia). 
flavicatella (DeGraaf), 1854a:183 ( Tettigonia). 
concolor (Haupt), 1912a:184 ( Tettigonia). 
