An Account of the Insects Noxious to Agriculture and Plants in New Zealand: The Scale Insects (Coccididae)Maskell, William Miles
Science
An Account of the Insects Noxious to Agriculture and Plants in New Zealand: The Scale Insects (Coccididae)
Maskell, William Miles
Insects -- New Zealand; Scale insects
Test of the male white, glassy, elongated, convex, not unlike that of
the female, but with a longer fringe; it has also its posterior segment
divided from the rest by a transverse slit or hinge; average length,
about 1/15in.
Adult female filling the test, shrivelling at gestation; colour brown;
abdominal lobes yellow, conspicuous. The flat under-surface is smooth;
the dorsum divided by large corrugations, each segment corresponding
to one in the test. Antennæ of seven joints, of which the third is
the longest, the fourth, fifth, and sixth the shortest; a few hairs,
especially on the last joint. Feet normal; the tibia is somewhat thin,
and has one spine or hair at its tip. Digitules normal; upper pair long
knobbed hairs, lower pair very broad.
The female in the second stage is also convex above, flat below, but
is less thick than the adult, and has not the corrugations. General
form elongated-oval; the abdominal lobes are not, as usual, smooth,
but approach by irregularity the anal tubercles of the Coccidinæ, and
like them bear a few hairs. The anal ring has eight hairs. Antennæ of
six joints. Feet normal; digitules as in adult. On the skin are several
scattered, circular, very minute spinnerets; the stigmatic spines are
long and conspicuous, and along the edge runs a row of conical hairs or
spines.
Adult male yellowish-green in colour, the body slender and tapering.
From the abdomen spring two very long white cottony setæ, one on each
side of the spike, which is straight and short. Antennæ of ten joints;
the first two short, the rest long, thin, and hairy. Of these, the
seventh, eighth, and ninth are the shortest; on the last joint three
long knobbed hairs. Feet slender, hairy; digitules normal. Thoracic
band inconspicuous.
Habitat--On _Leptospermum scoparium_ (manuka); Christchurch, Kaiapoi,
Wellington, Auckland. It affects the twigs of the plant, and not the
leaves.
41. Inglisia ornata, Maskell.
N.Z. Trans., Vol. XVII., 1884, p. 27.
(Plate X., Fig. 1.)
Test of adult female reddish-brown, the base more or less oval, the
rest elevated in a cone and ending in a prominence standing up like
a more or less sharp horn; sometimes there are two of these horns.
The test is formed of a number of polygonal segments, each slightly
elevated, and all are marked with the radiating striæ peculiar to the
genus. There is a fringe of sharply triangular segments, also striated.
Average length of test, about 1/6in., but specimens attain a length of
1/4in.; height, about 1/10in.
Test of second stage generally resembling that of the adult, but
smaller and less conical, and more tinged with green; and at the edge a
number of short spinneret tubes may be seen protruding.
Test of the male elongated-oval, convex, but wanting the prominent horn
of the female, glassy, white tinged with yellowish-brown, composed of
segments marked with conspicuous striæ. Length, 1/12in. Fringe often
present, but irregular; often absent.
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