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Australian ladybird beetles (Coleoptera: Coccinellidae) : - download pdf or read online

By Stanisław Adam Ślipiński; Australia. Department of the Environment and Water Resources.; Australian Biological Resources Study

ISBN-10: 0642568553

ISBN-13: 9780642568557

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Extra resources for Australian ladybird beetles (Coleoptera: Coccinellidae) : their biology and classification

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Majerus (1994) and Ceryngier and Hodek (1996) summarised contradictory observations on vertebrate predation upon ladybirds and found that the data are very incomplete. Many laboratory studies are hard to compare with field observations because often they involve different species of prey and/or predator. Majerus (1994) thinks that spiders are a major group having impacts on populations of ladybirds both by direct predation and by immobilisation on their webs. Among other predators, ants, flies (Asilidae adults and Syrphidae larvae), Neuroptera larvae and some entomophagous Hemiptera are of considerable importance, depending on the ladybird species and its biology.

2004) added yet another category to these interactions — ladybirds as obligatory myrmecophiles. They have discovered that larvae and pupae of a South American species, Thalassa saginata Mulsant, develop inside colonies of the ant Dolichoderus bidens and are tended by ants that move them around, and lick dorsal hairs and the secretion from the anal gland. The relationship between the beetles and ants is species-specific and the beetle larvae are integrated into the ant colonies; the larvae mimic the cuticular patterns of their hosts.

Usually the male that is on guard during female ecdysis is successful in mating with the virgin female. The same phenomenon was observed and documented photographically by Ron May (unpublished). Univoltinism (one generation per year) is common in many aphidophagous species of Coccinellini in temperate climates. These species reproduce in spring when their prey is abundant and become quiescent in summer, with varying levels of dormancy in winter. Bivoltinism is observed in some aphidophagous species, these having a spring and an autumn generation, with a summer interval of aestivation.

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Australian ladybird beetles (Coleoptera: Coccinellidae) : their biology and classification by Stanisław Adam Ślipiński; Australia. Department of the Environment and Water Resources.; Australian Biological Resources Study


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