Australian insectsFroggatt, Walter W. (Walter Wilson)
Science
Australian insects
Froggatt, Walter W. (Walter Wilson)
Insects -- Australia
The Genus _Epilachna_ contains all our plant-feeding lady-bird
beetles, two of which are common. The 28-spot lady-bird, _Epilachna
28-punctata_, has a wide range extending from China and India to all
parts of Australia; it measures about ⅓ of an inch in length, is of a
dull yellowish brown tint marked with rounded black spots, and clothed
with a fine pubescence. Crotch says: “This species varies almost to
infinity, and gradually runs into the common 6-spotted type, so that
I cannot give any structural differences.” Its curious gregarious
larvae are dull yellow covered with black spined tubercles; about
Sydney they are often found upon the foliage of the trumpet flower
(_Datura stramonium_), but in the north of N.S. Wales often damage the
foliage of potatoes. _E. guttatopustulata_ ranges from Tasmania to
North Australia, and is a common insect in the Richmond River scrubs,
N.S.W.; it is a large beetle, easily recognised by the large, rounded,
yellowish red blotch on the sides of the elytra.
[Illustration: =Fig. 103.=--_Thea galbula_
(Mulsant).
The Yellow-shouldered Lady-bird.
(“Agricultural Gazette,” N.S.W.)]
[Illustration: =Fig. 104.=--_Verania frenata_
(Erichson).
The Striped Lady-bird.
(“Agricultural Gazette,” N.S.W.)]
The typical _Coccinella repanda_ measures ⅕ of an inch in length; it
is a little, rounded, bright yellow beetle, with the head and thorax
blackish, the elytra striped down the centre, and marked on either side
with two irregular black V-shaped blotches. It has a wide range over
Australia, and feeds upon all kinds of aphids, sometimes appearing
in great numbers all over the country. _Leis conformis_ is a larger
species, of a uniform bright orange yellow, thickly spotted with black.
It is a common garden insect, where the clusters of its slender yellow
eggs may be often noticed attached to the bark of aphis infested
trees; and its elongated, smoky tinted larvae, blotched on the sides
with orange, may be often watched feeding upon rose or peach aphis.
_Thea galbula_ is a dainty little lady-bird, with the dorsal surface
bright pale yellow, marked with black in the centre of the thorax; the
dorsal stripe down the centre of the elytra connects two pairs of black
blotches crossing the centre and base. It measures about ⅙ of an inch
in length, and is at times common in our gardens. _Verania frenata_
is ⅙ of an inch; it is yellow, with the thorax black behind, and with
three stripes of the same colour down the elytra. It has a wide range
from Tasmania to New Caledonia and the Malayan Islands.
Public-domain text, read in full here on John Shaqi.
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