56 
but evinces a partiality for leguminous plants, including cowpea and 
pea, and has also been destructive to smilax in greenhouses and to 
potato, morning-glor}^, and clnysanthemom. In 189T it was some- 
what troublesome on edible legumes in Maryland. Among other 
plants which it attacks are egg-plant, pumpkin, cabbage, and numer- 
ous weeds. It occurs most abundanth" on the under side of leaves, 
which it punctures so as to cause the death of the tissue in small, 
irregular, somewhat characteristic white patches. 
This species is shown highly magnified in fig. 54: in the three forms 
of its adult stage. In its brachypterous or short-winged form it 
greatly resembles the common black cucumber flea-beetle, alike in 
appearance, in the nature of its work, and in its saltatory pow;er. It is 
evidently native and well distributed from Canada and New England 
southward to Florida and westward to Utah. This shows a range 
Fig. M.—Halticus uhleri: a, brachypterous female; b, full-winged female; c, male; d, head of male in 
outline— a, h, c, much enlarged; d, more enlarged (author's illustration, Division of Entomology). 
from the Boreal life zone to the Gulf strip of the Lower Austral. 
According to the observations of Mr. F. M. Webster, this species 
may hibernate in the adult stage, although probably it usually passes 
the winter in the egg. 
Remedies. — The best r emedj^ is kerosene emulsion applied thoroughly 
as an underspra}". 
Many of the instances of injur}^ that have been reported have been 
largely due to the planting of susceptible crops in the immediate 
vicinity of clover, which is evidently the preferred host plant. When 
the clover is cut the flea-hoppers migrate to other crops, and when 
sufficiently numerous cause damage. It is obvious that with a little 
care in cropping, such as the avoidance of growing crops subject 
to injury in the immediate vicinity of .clover, much injury would be 
averted. 
