Subcoccinella vigintiquattuorpunctata L Twentyfourspot ladybird

This widely distributed species is associated mainly with clover and lucerne. Both adults and larvae scarify leaves and remove the surface tissue to form a series of parallel grooves. Affected parts of the foliage appear whitish. In addition to members of the Fabaceae, damage may also occur on the foliage of other crops, including potato and tomato.

BIOLOGY

Adults hibernate in various sheltered situations. They become active in the following May, and eggs are then laid in batches on the leaves of host plants. Larvae feed for several weeks before pupating, and young adults appear about a week later. There are usually two generations annually.

DESCRIPTION

Adult are 3-4 mm long, extremely variable in appearance; head and legs usually reddish-orange; pronotum reddish-orange with a central black spot; elytra range from reddish-orange, usually with from eight to ten irregular black marks, to almost entirely black. Egg 0.50.6 mm long, elongate, pale yellow. Larva 4.4 x 2.0 mm; body elongate-oval, yellowish, variably marked with dark brown; thorax and abdomen with numerous tubercles bearing branched setae.

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