PART TV.
season than fields that had not been sprayed. This was due, probably,
to the fact that many of the predatory insects had been destroyed.
Jn iveply “No Mr. © Fuller, he stated that he thought that
if they could get rid of the ant they would be able to get rid of the
mealy bug also. He asked Mr. Kirkpatrick to explain his remarks in
regard to the incidence of mealy bug, as he had stated that it was
more prevalent in the lower districts which are more humid, but that
it also multiplied in the months of October and March, when the
rainy seasons commence.
Mr. KIRKPATRICK thought that the controlling factor at high
altitudes was not humidity but cold. There were also other
controlling factors. For instance, Pheidole breeds faster and is more
active during the rainy season, and also the mealy bug breeds more
rapidly when feeding on the young leaves and berries than on the old
leaves and the mature berries.
Mr. ANDERSON agreed entirely with Mr. Kirkpatrick's opinion
in regard to the control of the mealy bug.
It was agreed: —
That much more work should be done by entomologists in
regard to the Pheidole ant, and that the question of baits and the
destruction of nests is worthy of close investigation. As this ant
was of great importance in Kenya, it was recommended that a
thorough investigation should be undertaken in Kenya.
A discussion then took place in regard to Stephanoderes hamper,”
and the possibility of preventing the spread of this pest from Uganda
to Kenya; and it was agreed to recommend : —
That the entomologists in the two territories should meet
and discuss the question after visiting the coffee areas to the
east and west of Mount Elgon.
LYCIDOCORIS MIMETICUS—A POTENTIAL PEST OF COFFEE
Mr. HARGREAVES read the following paper (referred to in the
Agenda as T.C.(C)E. & M.5):—
Although this bug in Uganda has not been responsible for much
damage to coffee, it is of considerable importance owing to the sericus
nature of the damage of which it is capable under favourable
conditions.
The insect was first recorded on coffee in Uganda during 1916 and
was again noticed on two other estates during 1917. In each instance,
judging from the meagre information available, the pest was of minor
importance. From 1920 until early 1925 L. mimeticus was noticed
only on coffee growing in shade so dense that little or no crop could
be produced. In 1925, however, an attack on unshaded coffee came
to my notice; it occurred on a small portion of an estate which had
previously produced very little crop and it seemed that the insect was
favoured by some condition of the soil. More recently, small
outbreaks have been noticed on unshaded coffee and on trees lightly
shaded by Para rubber.
+ See also page 64.
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