39 
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SYNOPTICAL TABLE OF THE SUB-FAMILIES. 
(Sub-families.) 
A. Winged form known; not subterranean except in a 
few cases where there are dimorphic forms. 
a. Front wings with three discoidal veins; antennae 
of the winged individuals, and generally of the ap¬ 
terous individuals six or seven-jointed. 
b. Front wings with third discoidal vein twice forked 
(except in To.copter a ); posterior wings with two 
discoidal veins; honey tubes various. 
bb. Third discoidal vein with one fork or simple; 
posterior wings with one or two oblique veins; 
honey-tubes tuberculiform or wanting. 
Pemphloix-E. 
act. Front wings with but two discoidal veins, the 
third being absent; antenna? never more than flve- 
jointed, sometimes but three-jcinted. 
Chermesix.e. 
AA. Permanently apterous, at least no winged form 
has been observed; chiefly subterranean, residing on 
the roots of plants. Rinzonnxm. 
Synopsis of the Sub-divisions and Genera of Aphidin^e. 
This sub-family may be conveniently divided into three tribes or 
sub-divisions as follows: 
(Tribes.) 
A. Antennae situated on frontal tubercles. Siphonophorini. 
AA. Antennae not on tubercles. 
B. Antennae seven-jointed, the seventh joint always 
longer than the sixth (except in some species of 
Callipterus.) Aphiclmi . 
BB. Antennae six-jointed; the sixth joint often fur¬ 
nished with a spur at tip like a rudimentary 
seventh joint. 
tiff 
iiifcjl 
Id* 
-jwl 
V 
l** 
* 
Lachnini. 
