Pentatomidae Ebooks Catalog
The Nuaulu, swidden cultivators of South Central Seram, have been extensively studied over many years by Roy Ellen (1978, 1993). From his analysis of their animal categories it would appear that, unlike many other communities, the Nuaulu have few clearly defined life-form categories, apart from Peni (loosely, large game), Mnaha (rats and mice), Manue (birds bats) and Ikae (fish and marine animals). This means that intermediate or generic levels of classification are of primary importance, and that many of these 'basic categories' are polytypic, consisting of 2-17 terminal (specific) categories. Ellen recorded some 49 folk generics - the 'basic categories' - relating to insects that together comprised around 113 terminal taxa (Ellen 1993 100-1). Thus the generic category Kauke (grasshoppers, crickets, mantids) embraces 14 terminal categories while Rikune (bugs) covers around 9 terminal categories (mostly of the families Coreidae and Pentatomidae), with the cicadas (three generics) and...
Four other bugs are often noted as occasional pests on cotton. These are the green shield bug (Nezara viridula), which is a cosmopolitan pest occurring on many crops the bow-legged bug, nandoli (Anoplocnemis curvipes) the iridescent cotton bug Calidea dregii, which is a bright, shiny blue insect and the cotton aphid, nsabwe zo m 'thonje, ('lice of cotton') (Aphis gossypii), which feeds on the tips of young shoots and the leaves of the plant. When infestation is severe it turns the leaves yellow. Tomato, Matimati, (Lycopersicon esculentum). A native of South America, the tomato is an extremely important crop to Malawians, and is grown in semi-wild kitchen gardens within the village environs (along with chillies, tsobola (Capsicum annuum) and spinach, bonongwe (Amaranthus sp.)), on termite mounds, and in dimba gardens. They are seldom eaten raw, but are used as an essential ingredient in relish (ndiwo) dishes. Although tomatoes are occasionally attacked by the African boll-worm...
Several other insects feed on beans and peas, and can at certain times, and in some localities, become major pests. These include the green shield bug, nkhunguni (Nezara viridula), the bow-legged bug, nandoli (Anoplocnemis curvipes), and the small green weevil, Systates per-blandus.
The green shield bug nkhunguni (Nezara robusta) is not mentioned in the early report of the nutrition survey (1938-1940), but Pentatomid bugs seem to be eaten widely in Southern Africa (Bodenheimer 1951 190-1). Nkhunguni - a name shared with the common bed bug, although the pronunciation is slightly different - is a common bug in the Mwanza, Neno and Thyolo districts, and is associated with Brachystegia woodland and blue gum plantations. It is alternatively called the green stink bug, for it has a powerful smell, and is often described as chinunkha - 'that which smells'. In the Thyolo district the bug is collected from Eucalyptus trees at daybreak, when there is still a chill in the air, and the bugs are dormant. The bole of the tree is hit (-gunda) or beaten very abruptly with a log or heavy implement. This has the effect of shaking the tree suddenly, and the insects fall to the ground, to be gathered up by the women. In the Neno district collection of the bug is more organized. It...
Stink bugs get their names because of the smelly secondary metabolites they release from pores located on the sides of their thorax. These smelly compounds repel predators, and may even indicate toxicity to the predator. These insects are common garden pests that are usually controlled with chemical pesticides. However, it appears that the eggs of stink bugs are not defended against roly-poly pill bugs, which can control stink bug numbers (and hence, garden damage) by preying on eggs.
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