204 University of Califoruia Puhlications. [Entomology 



2. Pronotuni with a distinct apical collar, or with a flattened anterior 



margin simulating a collar ^ 



— Pronotum without a collar 9 



3. Pronotal collar convex, separated from anterior disk by a distinct 



incised line -i 



— Pronotal collar flat, without an incised line behind it, or wanting; 



body elongated, often linear 8 



4. Head viewed from above short, vertical, produced below the eye for 



nearly twice the length of the eye; antennae long and slender, much 

 longer than the entire body, inserted the length of the clypeus above 

 its base; basal joint of the tarsi as long as the following two 

 together; arolia wanting; vertex deeply sulcate; pronotal collar very 

 slender Cylapini 



— Head not greatly produced below the eye; antennae rarely longer than 



the entire body, inserted about on the line of the base of the 

 clypeus; basal joint of the tarsi shorter than the following two 

 taken together 5 



5. Eostrum long, passing the middle of the venter; head produced, hori- 



zontal or nearly so; tibiae smooth, or with minute pubescence only; 

 tarsi slender, basal point but little shorter than the following two 

 together; arolia wanting Fulvini 



— Eostrum shorter, scarcely surpassing the hind coxae; tibiae armed with 



bristles or clothed with longer hair, rarely smooth 6 



6. Pronotal collar broad, convex, about as broad as the callosities; tibiae 



thickly clothed with soft hairs but without rows of stouter bristles; 

 body opaque, black, marked with red or fulvous Horistini 



— Pronotal collar narrow, convex, often linear, rarely broad; then flat 



with the body elongated, tibiae smooth and pronotum broadest 

 before the middle 7 



7. Body elongated, often linear; base of scutellum usually exposed; tibiae 



smooth or nearly so; arolia minute and united with base of the 

 claws, or as long as the claws and lying close to them Dicyphini 



— Body rarely elongated, with the base of scutellum exposed and tibiae 



smooth or nearly so, arolia in this case free and divergent at 

 apex Capsini 



8. Tarsi long, first joint longer than the following two together; pronotal 



collar a mere flattening of the anterior margin, or sometimes want- 

 ing; vertex often sulcate; arolia large, free, often clavate Mirini 



— Tarsi shorter, first joint not longer than the third, usually shorter, 



' pronotal collar often wanting; arolia united with the claws or want- 

 ing Hallodapini 



9. Arolia free, parallel, or converging toward their tips; wing-cell with- 



out a hamus Orthotylini 



— Arolia wanting, or parallel with and usually united to the claws at 



base, wing-cell normally with a hamus Phylini 



