GENERIC CLASSIFICATION OF APHIDIDAE, 21 
Genus GLYPHINA Koch. 
Plate III, G-L 
"1857. Glyphina Koch, Die Pflanzenlause Aphiden, p. 259. 
1911. Travaresiella Del Guereio, Redia, v. 7, p. 299. 
Characters.— Cornicles present as somewhat elevated rings. Antennae 5-seg- 
mented, minutely setose, armed with a few stout hairs and somewhat subcircular 
sensoria. Fore wings with the media once branched; hind wings with only the media 
present. Cauda not knobbed, somewhat rounded, anal plate rounded. Body covered 
with hairs. 
Forms living upon the foliage of plants. 
Type (monotypical), Glyphina betulae Kalt. 
Genus THELAXES Westw. 
Plate HI, A-F. 
Vacuna of authors, not Heyden. 
1840. Thelaxes Westw., Int. Mod. Class. Ins. Synopsis, v. 2, p. 118. 
In 1837, Heyden erected his genus Vacuna based on coccinea, 
Heyden. He definitely stated that he thought Phylloxera Boyer was. 
the same genus. Kaltenbach stated that coccinea is a Phylloxera 
and so considered dryophUa as type of Vacuna, as this species was in- 
cluded in the genus by Heyden. On the authority of Schouteden and 
other European workers coccinea is now considered a Phylloxera and 
another type, dryopMla, can not be set for the genus in order to apply 
Vacuna to the genus as now understood. Vacuna with coccinea as 
type will become a synonym of Phylloxera and another name will 
be necessary to apply to the genus having dryophila as type. The 
next name used appears to be Thelaxes Westwood. 
Characters. — Cornicles present as chitinized rings on broad low cones. Antennae 
of the stem mother 5-segmented. Alate form with 3-segmented antennae, sensoria oval 
or subcircular. Fore wings with the media once branched, hind wings with the 
cubitus lacking. Cauda distinctly knobbed, anal plate rounded. Sexual forms small 
and apterous, possessing distinct beaks and feeding; oviparous female producing 
normally but one egg. 
Type (fixed by Westwood, 1840), Thelaxes quercicola Westw. (= Aphis dryophila Schr.) 
Tribe CALLIPTERINI. 
The tribe Callipterini is composed of forms which live upon the 
foliage of plants. The species in mairy of the sub tribes have developed 
peculiar habits. Some forms are almost solitary whereas others 
live in colonies. Some have developed the power of leaping,. 
while others are sedentary. The sexual forms do not vary greatly 
from the viviparous forms. In nearly all of the sub tribes the males are 
winged, though in the Saltusaphidina they are apterous. In the other 
tribes intermediate males may occur in the same species with alate 
males. The oviparous females are nearly always apterous, although in 
the Phyllaphidina alate ovipara may occur. Both sexes feed and the 
ovaries of the oviparous female are developed so that several eggs are, 
laid. 
