GENEEIC CLASSIFICATION OF APHIDIDAE. 37 
Genus FULLAWAYA Essig. 
1012. Fullawaya Essig, Pomona Coll. Journ. Ent., v. 4, p. 716. 
The genus Fullawaya seems to bear somewhat the same relation to 
Chaitophorus that Monaphis does to Myzocallis. Were it not for the 
hairy condition of the antennae and the character of the cauda and 
anal plate, Fullawaya might be placed as a synonym of Monaphis, 
but it is evidently unrelated. 
Characters. — Cornicles absent; antennae of six segments, armed with rather long 
bristle-like hairs, eensoria small and circular, cauda rounded and armed with long 
curved hairs. Fore wings with the media twice branched, hind wings with both 
media and cubitus present. 
Forms living upon the roots of plants. 
Type (mono typical), Fullawaya saliciradicis Essig. 
Tribe GREENIDEINI. 
The tribe Greenideini was first separated by Wilson under the 
name Trichosiphina. The insects f ailing here show a most remarkable 
development of the cornicles. These are sometimes as long as the 
entire body in the alate forms. In the apterous individuals they are 
usually swollen. In both they are very thickly covered with long 
hairs, a condition not met with in any of the other Aphidinae with 
long cornicles. It is true that some species of Macrosiphum and occa- 
sionally species of the other genera show here and there minute hairs 
on the cornicles, but they do not approach in any way members of 
this tribe in cornicle armature. The development of the cauda in 
this group is also remarkable. 
Characters. — Cornicles present and remarkably developed into cylindrical or slightly 
swollen tubes often as long as the body and thickly covered with long hairs. Antennae 
of five or six segments armed with oval or subcircular sensoria. Males winged. Forms 
living free upon the foliage. 
Key to Genera oe Greenideini. 
1. Antennae of five segments Eutrichosiphum. 
Antennae of six segments 2. 
2. Fore wings with the media twice branched, hind wings with both 
media and cubitus present Greenidea- 
Fore wings with media once branched, hind wings with neither media 
nor cubitus present Greenideoida. 
Genus GREENIDEA Schouteden. 
Plate V, F-K. 
1905. Greenidea Schouteden, Spol. Zeylan, v. 2, p. 181. 
1906. Trichosiphum Pergande, Ent. News, v. 17, p. 206. 
In 1905, Schouteden erected a genus for the Si phono pJiora artocarpi 
of Westwood and redescribed the species, giving details lacking in 
Westwood's paper. Pergande erected his genus Trichosiphum, 
making his anonae the type. The characters Pergande used to sep- 
arate his genus were in reality those of Greenidea. 
