24 
HEM IP TER A, 
(mail drops of fweet water ifiue from them, which 
attraffs the ants. Many are covered with a white 
powder. 
The larva, chryfalis, and perfeft infeft, cannot be 
diftinguifhed. 
Aphides are devoured by the larvae of the mynne- 
leon formicarium of Linnaeus. Ants are very fond 
of them. The beft way of deftroying them is, to 
put on the trees larvae of the plarit-loufe lion; or, 
aphidivorous flies. 
GENUS 10.—GHERMES. 
The larvae of the chermes have fix feet ; refemble 
the perfeft infeft; and are generally covered with a 
hairy or wooly fubftance. 
The winged infefts leap and fpring with great agi¬ 
lity; and infeft a great number of different trees and 
plants. 
The females infert their eggs under the furface of 
the leaves by means of a tube, and caufe the little tu¬ 
bercles, or galls, with which the leaves of the afh, 
the fir, and other trees, are fometimes almoft.wholly 
covered; the largeft infeft the fig : it is brown above, 
greenifh beneath, the wings large, and placed lo as 
to form together an acute roof. 
The fir-tree chermes produces that enormous fcaly 
protuberance that is to be found at the fummit of 
the 
