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Pyrrhalta Quianana
''Pyrrhalta'' is a genus of beetles in the leaf beetle family, Chrysomelidae. Species are distributed throughout much of the world, including much of the Northern Hemisphere and the Australian region.Nie, R. E., et al. (2013)Notes on black elytron species of ''Pyrrhalta'' Joannis and the description of a new species from China (Coleoptera, Chrysomelidae, Galerucinae).''ZooKeys'' 289 41-56. The taxonomy of the genus is not clear. Species are separated from those of other genera by the sometimes inconsistent comparison of questionable characters, such as the distribution of minute hairs. There is also little agreement on how to divide the group into subgenera In biology, a subgenus (plural: subgenera) is a taxonomic rank directly below genus. In the International Code of Zoological Nomenclature, a subgeneric name can be used independently or included in a species name, in parentheses, placed between t .... Former subgenera such as ''Xanthogaleruca'' are treated as separate ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrrhalta Viburni
''Pyrrhalta viburni'' is a species of leaf beetle native to Europe and Asia, commonly known as the viburnum leaf beetle. It was first detected in North America in 1947 in Ontario, Canada. However, specimens had been collected in Annapolis Royal, Nova Scotia in 1924. In 1996 it was discovered in a park in New York, where native plantings of arrowwood ('' Viburnum dentatum'' complex) were found to be heavily damaged by larval feeding. The UK-based Royal Horticultural Society stated that its members reported ''Pyrrhalta viburni'' as the "number one pest species" in 2010. The spined soldier bug, ''Podisus maculiventris'' is used and developed as a biological control agent against the beetle. Life cycle Viburnum leaf beetles go through one new generation of offspring per year. Eggs are laid throughout the summer and into October. Female beetles burrow into the underside viburnum terminal twigs and create 'spaces' in pith tissue. Then they lay eggs in clusters of 5-6 and cover them ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |