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General Description for Mirids

Adult Cocoa Mirid

(Helopeltis spp.)

Nymph Cocoa Mirid

(Helopeltis spp.)

The general description for mirid species are that they small in size, most are under 12 mm, with general body shape that is oval or elongated. Due to the shape of their prothorax, they have a hunched down look. A feature used to identify the Miridae family is the presence of a cuneus, the triangular tip at end of the leathery forewing. It is clearly visible in mirids for that section of the wind has a slight downward bent to it. Mirids are pierce pest, so they have stylet month part that can penetrate very tough material, such as bark. They also inject enzymes that break down the cell so they suck the nutrient. Color patterns vary between species. Mirids have an incomplete metamorphic life cycle. They have an egg, several nymphal, and an adult stage. The nymphs like very similar to adults, but have no wings or reproductive organs.

 

For the species that cocoa tree they also feed on other member of the cocoa tree genus, as well as citrus trees, silk, sweet potato, guava, monago trees, tea, cashew trees, and cotton. Female mirids can lie up to 60 eggs (with an average roughly around 30 to 40 eggs). The eggs are placed on the bark of the tree.

[28, Photo 48]

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