178 
Gardeners and Florists’ Annual for J9J8 
trict at Newport, K. I,, but they have since spread over a wide area. 
They are a terror to Dahlia lovers, as crawling up into the flower much 
damage is done before they are detected. Trapping seems to be the 
most efl’ective way of getting rid of them. One gardener has found 
them by setting tumblers with just a little sweet oil (olive) along their 
runs in the greenhouse; placing a good sized label against the edge, the 
pests use this as a ladder and, on reaching the top, tumble in in large 
numbers. Inverted pots stuffed with hay at tneir base and placed upon 
stout sticks or stakes, form a harbor for them in the Summer when the 
plants are growing. The pots can be examined each day and the ear- 
wigs emptied into very hot water. 
Eelworms (see also Root-knot, p. 174), attack many crops, par- 
ticularly under glass, including bulbs. Carnations, etc. If a small piece 
of infected tissue be 
carefully torn to 
pieces with a needle 
in a dish containing a 
few drops of water, 
the white, thread-like 
adult eelworms, abou t 
one-fiftieth of an 
inch long, can he seen 
moving about in the 
liquid. The pest at- 
tacks not only the 
aerial parts of plants 
but also the bulb, 
causing the plant 
eventually to die, or 
if not killed it usu- 
ally dies before ma- 
turity or fails to pro- 
duce fruit. Remedies 
for the pest are the 
use of tuluol and bi- 
sulphide of carbon. 
The Imported Elm Leaf-Beetle 
a, Foliage of European Elm showing method of work of 
beetle and larva, half-size; 6, adult beetle; c, egg mass; 
d, young larvte; e, half-grown larva; g, pupa — all greatly 
enlarged; /, mouth parts of larva 
Elm Leaf-Beetle. 
— This beetle has be- 
come very destructive 
to Elm trees in parts 
of the Eastern United 
States. It is an im- 
ported pest. The 
beetle passes the 
Winter in cracks or 
in out of the way 
])laces, issuing in the 
Spring, and as soon 
as the buds appear 
they begin to feed 
