Part I. ] 
Stebbinq : Note on the Lac Insect. 
19 
Lac- YIELDING Trees — concld. 
Name of tree. 
Vernacular 
names. 
Localities in 
which the lac 
insect feeds upon 
the tree or trees. 
1 
Abundance of 
lac produced. 
86. ZIZYPHUS JU- 
Ber, Bar, Kul, 
Bombay, Sind, 
A good lac- 
JUBA. 
Bogori Blior 
Central India, 
bearing tree 
Bordi Bair, 
Punjab, Uni- 
owing to the 
jamun 
ted Provinces, 
Central Pro- 
vinces, Berar, 
Bengal, Raj- 
putana, 
Assam, Burma. 
ease with 
which the 
insect can be 
propagated 
upon it and 
is therefore 
largely used 
in the culti- 
vation of 
insect. 
87. Zizyphua xylo- 
Kat-ber, Ohon- 
Central Pro- 
pyra. 
ti, Ghat-ber. 
vinces, Berar, 
United Pro- 
vinces. 
Quality of 
lac producei. 
The lac is 
inferior in 
quality to 
that pro - 
duced on some 
other trees. 
CHAPTER VI. 
INJURY DONE BY THE LAC INSECT TO THE TREES. 
Most scale insects must be looked upon as injurious pests to the 
trees upon which they Uve since they tap the plants of their sap in vary- 
ing amoimts. The lac insect is no exception to the rule, although it 
IS probable that its numerous hosts are affected in a varying degree by 
its attacks. It stands to reason that a steady drain upon the sap of 
small twigs by what may be termed so many animated siphons must 
result in the twigs eventually dying and drying up and this is what 
actually occurs. It is probably but rarely, however, and that only in the 
case of certain species of tree, that the latter are ever killed by the insect. 
Mr. J. McKee, Conservator of Forests, called attention to this subject 
in his valuable report* on the subject and suggested that Forest Officers 
should make a study of this point with a view to enabling a proper system 
of pruning the trees to be introduced in areas of lac cultivation. This 
point will be returned to when considering the question of the propagation 
and cultivation of the insect. 
* Indian Forester, Vol. I, p. 26. 
D 2 
