INSECT A. 435 



Sp. Aphis rosce L., REAUMUR, 1.1. PI. 21, figs. 14; DUM^BIL, Cons. gen. 

 s. 1. Ins. PI. 39, fig. 3, &c. 



a GEOFFR., LATR., Ckermes L. (exclusive of Cherm. Abie- 

 is). Antennae with ten joints, the last bisetose. Tarsi with two 

 qual joints. Wings deflected, ample, with nerves branched, 

 magines always winged. 



Leaf-suckers, False leaf-lice, Faux pucerons. The larvae are covered 

 with a woolly coating, just like leaf-lice. The perfect insect has the 

 habitus of a small cicada, the long antennae excepted. Comp. R^AUM. Ins. 

 in. Mem. x. pp. 351 362 ; DE GEER, Mem. in. pp. 130 157. Sp. 

 Psylla pyri, Chermes pyri L., RATZEBURG, Forst-Insecten, in. Tab. xi. 

 fig. 2, &c. 



Livia LATR., Diraphia ILLIG. Antennae short, thick. Head 

 anteriorly bifid. 



Sp. Livia juncorum LATR., DUM^RIL, Cons. gn. s. L Ins. PI. 39, fig. 5 ; 

 GERMAR, Faun. Ins. Europ. vi. Tab. 21. 



Add sub-genus Livilla CURTIS, WESTW. 



Family XXXVII. Cicadarioe. Wings four deflected, anterior 

 ften coriaceous coloured elytra. Tarsi almost always triarticulate, 

 h. a few biarticulate. Antennae short, with three or seven joints, 

 he last setaceous. Females furnished with serrated borer. 



Comp. on this family GERMAR, Magaz. der Entomol. in. pp. 177 227, 

 iv. pp. i 106. 



A. Cicadarice mutce. No musical organs. Antennas with three 

 oints. Eyes two or none. Tarsi triarticulate. 



Phalanx I. Cicadellce LATR. (Cicadellina and Membracina 

 SURMEISTER). Antennas inserted between the eyes. Posterior feet 

 altatory. 



A) Prothorax not produced posteriorly above the abdomen. 

 Scutellum distinct. Head horizontal, with frons mostly directed 

 forwards. 



t) Posterior tibiae spinose or serrate. 



a) Ocelli none. 



Typhlocyba GERMAR. Body elongate. Posterior feet very long. 



Oomp. especially HERRICH SCH^EFFER, Deutschl. Ins. Heft 164. Small 

 insects, leaping, mostly yellow or green. European species numerous, 

 amongst which are Cicada Ulmi and Cicada Rosce L. 



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