P.
E l 50 . Bulletin N0. 133.  
  for a short distance and lays slightly oval translucent. eggs in the il
burrow. Mined twigs have several times been kept with a view to 'L
y getting the young and learning something of the life history, ·but  
~ eggs in the severed twigs failed to hatch. I Q
, · This apple insect is not the same as the Pear-Blight Beetle j
(Xyleborus pyml). The latter is said to measure 0.12 inch, while i
this one is not more than half as long. The apple twig species is .
I blackish, the whole body above- with short, erect expanded hairs or
scales. The head is concealed beneath the prothorax, but shows from i
y the sides. It is a stout-bodied little beetle, its diameter nearly half "
  its length. _ » F r y
V The presence of this insect in Kentucky was observed by me
prior to 1893, as noted in the sixth volume of Insect Life, page 93.
· Attention is called to it in this connection merely to point out that
it is not the cause of the blighting of the twigs.
THE FRUIT BARK-BEETLE.
(Scolytus rugulosus).  
The small brown beetles appear about dying apple and other j
trees, cut round holes in the bark and mine the inner bark. They 1
- were formerly seen very often in nurseries working on the young
trees heeled in on the packing ground for the spring sales. Even
where most numerous I have never observed them attacking per-
1 fectly healthy trees. · y
V THE XVOOLLY APHIS. .
(Schizoneum Zanigcm).
The presence of this small, soft—bodied insect is everywhere
recognized by the white cottony material with which its body is
generally clothed. It occurs in chinks and wounds of the bark, gen-
erally on the trunk, hut sometimes also on the branches. Its chief
injury in this country is to the roots, which as a result of the punc-
tures made by the aphis become irregularly knotted and distorted,
in sonic cases where the injury is severe, dying at the ends, and thus
sometimes leading to the death of young trees.
It is very prevalent in both nursery and orchard, and its pre- - ,
- sent general distribution and abundance in the apple growing scc- I
tion of the country is in great part the result of unhindcred scatter-
‘ ing of infested nursery trees through all the history of horticulture