INSECTS INJURIOUS IN 1902. 63 
shrubs, and to some extent, the ash trees. On May 16th the 
party wrote again that they “had nearly all left the currants” ; 
on June 5th they were reported as “having gone,” and the state- 
ment was also made, “we will only get one-third of a crop of cur- 
rants.” 
This insect frequently causes both petals and leaves to 
wither and fall, sometimes killing the branch on which they 
occur. One can take advantage of its sluggishness early in the 
morning, and shake them from the bushes at that time onto sheets 
placed below, and then destroy them. Since they become very 
active as soon as they are warmed up by the sun, gathering them 
in this way is confined to the early morning. 
They are reported as injuring many kinds of fruit beside 
currants, viz., strawberries, plums, apples, quince and cherries. 
The injury caused is not protracted; that is, its attacks are not 
lasting. It measures about one-fifth of an inch in length, and re- 
sembles the pictures accompanying this article. 
THE-MELON APHIS. 
Aphis cucumeris, Forbes. 
These lice attacked melons and cucumbers on the farm of 
George Jacobson, Luverne, Minn. Various remedial measures 
are mentioned for this pest, none of them easy of application 
when a large field is to be treated. Spraying the underside of 
leaves with kerosene emulsicn, one part to twelve parts of water, 
or dusting Pyrethrum with a bellows onto the underside of leaves 
are both suggested. More reasonable, however, is the sugges- 
tion to destroy all the old vines and rubbish on the melon patch, 
and plant some crop other than melons or cucumbers there the 
following season. Frequently the attacks of this pest are not 
of long duration, the plant yielding a crop in spite of the visita- 
tion ; parasites, too, kill many of them. 
CORN LOUSE. 
Aphis maidis, Fitch. 
Another pest found in the State difficult to combat. There 
