ORDER HEMIPTERA. 



Mouth promuscidate ; metamorphosis incomplete. 



SUBORDERS. 



Winijs uniformly membranous or horny Suborder 1, HOMOPTERA. 



Front wings basally horny, aiii.-aily membranous ; hind win'.,'s memhranou-. 



Suborder II, HETEROPTERA. 



Suborder I, HOMOPTERA. 



TABLE OF DIVISIONS. 



Beak issuini^ from the inferior part of the head 



Div. I, AUCHENORHYNCHA, A. et S. 



Beak apparently issuing from the sternum 



Div. II, STERNORHYNCHA, A. et S. 



Division I, AUCHENORHYNCHA, Amyot et Serville. 



TABLE OF THE FAMILIES. 



Front wings most frequently opaque or parchment-like; hind wings membranous 2 

 All wings most frequently membranous or horny, strongly areolated. 

 *Ocelli 3 on the vertex ; antennae setiform, placed between the eyes ; thorax 



nwrmal : fore femora thickened, toothed beneath ; males musical 



Fam. I, Cicadidae. 



**Ocelli most frequently 2, usually placed beneath the eyes or in hollow cavities in 



in the cheeks, a 3rd ocellus sometimes on the front ; antennae always placed 



beneath the eyes ; frons often produced, carinated. . . Fam. II, Fulgoridse. 



***Ocelli 2 on the crown ; antennse between the eyes ; thorax abnormally developed, 



usually completely covering the scutellum ; legs foliaceous, prismatic or 



rounded Fam. Ill, Membracidae. 



2 Thorax normal ; ocelli 2, seldom absent ; antenna; setiform, placed between the 

 eyes. 



■f-Qcelli always placed somewhere on the vertex Fam. IV, Cercopidae, 



If Ocelli always on the frons and below the superior margin 



Fam. V, Bythoscopidae. 



tf-f-Occlli in front of the eyes on the rounded edgeof the superior margin, but never 



on the vertex Fam. VI, Jassidae. 



Division II, STERNORHYNCHA, Amyot et Serville. 



TABLE OF THE FAMILIES. 



Tarsi i -jomted ^ 



Tarsi 2-jointed. 



Beak 3- or 4-jointed ; wings most frequently membranous. 



Antennte lo-jointed ; abdomen without honey tubes Fam. VII, Psyllidae 



Antennae 3- to 7-jointed ; abdomen frequently with honey tulies 



Fam. VIII, Aphidids 



Beak 2-jointed ; wings opaque, farinose Fam. IX, Aleurodidx 



2 Males with only 2 wings, seldom apterous ; females always apterous, mite like 

 antennre 6- to 11 -jointed ; and all the species reach maturity under waxy secre 

 tions, filamentary down or in galls Fam. X, Coccidae 



