-.87- 



Prothorax with lateral tulierclcs. 



Honey tubes lon;^, nuicli dilaled in tlie middle. .G. 3. Macrosiphum Oestl. 



Prothorax witliout lateral tubercles. 



Honey uil)e> not di>tinctly clavate oi- ex])anded at apex 3 



Honey tubes (li>iincily clavate (i. 4. Rhopalosiphum Koch 



Honey tubes expanded at apex or trumpet mouthed 



G. 5. Megoura F.uckt. 



3 Cubital vein once forked (J. 0. Toxoptera Knch 



Cul)ital vein twice forked. 



Honey tubes moderately long ; style much siic:)rter than luniey tui)e< " 



(;. 7. Myzus Pcijs. 



Honey tubes short ; style as long or longer than honey tubes 



G. 8. Hyalopterus Koth 



Honey tubes curved and usually enlarged in the middle ; style very small or 



wanting G. 9. Drepanosiphum Koch 



4 Seventh antennal joint as long or longer than the sixth. 



Antennae not pilose. 



Honey tubes longer than thick, cylindrical G. 10. Aphis I,inn. 



Honey tubes clavate G. 11. Siphocoryne Pass. 



Subfamily H. CALLIPTERIN^E. 



TABLE OF GENERA. 



1 Seventh antennal joint shorter than the sixth 3 



Seventh antennal joint as long or longer than the sixth. 



Antenn?e not pilose ; 7th joint longer than 6th, honey-tube- subobsolete ; Cauda 



very small G. i . Cryptosiphum Buckt. 



Antennae pilose. 



Abdomen bare, not hairy or tuberculate 2 



Al)domen hairy or tuberculate. 



Rostrum short G. 2. Chaitophorus Koch 



Rostrum long. 



Honey tubes pear-shajied ; prothorax with lateral teeth 



G. 3. Melanoxanthus Buckt. 

 Honey tubes sho.t, cylindrical ; prothorax without lateral teeth. 



G. 4. Pterocomma Buikt. 



2 Rostrum extending at least to the hind coxre G. 5. Pterocallis Pass. 



Rostrum very short, stout, not extending beyond the anterior C()x?e . ... 



G. 6. Ptychodes Buckt. 

 AntenniTe not pilose G. 7. Myzocallis Pass. 



3 Wings horizontal ; rostrum very short ; style enlarged at the apex 



G. 8. Monellia Oestl. 



Wings deflexed ; rostrum short, seldom reaching to middle coxre, style short, 



globular (1. 9. Callipterus Koch 



Si;isFAMii.v HI. LACHNINiE. 



TABLE OF GENERA. 



I Winged forms unknown 4 



Winged forms known. 



Abdomen woolly 3 



Abdomen not woolly. 



