Viburnum leaf beetle | |
---|---|
Dorsal view | |
Lateral view | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Coleoptera |
Infraorder: | Cucujiformia |
Family: | Chrysomelidae |
Subfamily: | Galerucinae |
Tribe: | Galerucini |
Genus: | Pyrrhalta |
Species: | P. viburni |
Binomial name | |
Pyrrhalta viburni (Paykull, 1799) | |
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. [1] The UK-based Royal Horticultural Society stated that its members reported Pyrrhalta viburni as the "number one pest species" in 2010. [2] [3]
The spined soldier bug, Podisus maculiventris is used and developed as a biological control agent against the beetle. [1]
Adult viburnum leaf beetles range from 4.5-6.5 mm in size, while mature larvae are roughly between 10 and 11 mm. It has a brown head, thorax and elytra with dense golden-grey hair on its dorsal surface. [4]
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 with frass. [5] Eggs overwinter in these cavities where they are protected from water loss and predation. [6] Females prefer to place their eggs near where other females have in previous years [7] The eggs hatch by mid-May, after hatching, the larvae feed and grow successively bigger through three instars. Ultimately, they pupate in the soil and emerge as adults in late June or early July. [8]
Both the larvae and the adults consume the leaves of Viburnum species, but at different times of the year, the larvae during the spring, and the adults during the summer. Plants may end up being completely defoliated due to their feeding activities, sometimes resulting in their death. Although, certain species appear to be more preferable to the beetles than others. [9]
The Colorado potato beetle, also known as the Colorado beetle, the ten-striped spearman, the ten-lined potato beetle, or the potato bug, is a major pest of potato crops. It is about 10 mm long, with a bright yellow/orange body and five bold brown stripes along the length of each of its elytra. Native to the Rocky Mountains, it spread rapidly in potato crops across America and then Europe from 1859 onwards.
The insects of the beetle family Chrysomelidae are commonly known as leaf beetles, and include over 37,000 species in more than 2,500 genera, making up one of the largest and most commonly encountered of all beetle families. Numerous subfamilies are recognized, but the precise taxonomy and systematics are likely to change with ongoing research.
The scarlet lily beetle, red lily beetle, or lily leaf beetle, is a leaf beetle that eats the leaves, stem, buds, and flowers, of lilies, fritillaries and other members of the family Liliaceae. It lays its eggs most often on Lilium and Fritillaria species. In the absence of Lilium and Fritillaria species, there are fewer eggs laid and the survival rate of eggs and larvae is reduced. It is now a pest in most temperate climates where lilies are cultivated.
Viburnum tinus, the laurustinus, laurustine or laurestine, is a species of flowering plant in the family Adoxaceae, native to the Mediterranean area of Europe and North Africa. Laurus signifies the leaves' similarities to bay laurel.
The Sciaridae are a family of flies, commonly known as dark-winged fungus gnats. Commonly found in moist environments, they are known to be a pest of mushroom farms and are commonly found in household plant pots. This is one of the least studied of the large Diptera families, probably due to the small size of these insects and the similarity among species.
The spined soldier bug is a species of stink bug common in North America. They are predators of gypsy moth caterpillars and the larvae of beetles such as the Colorado potato beetle and the Mexican bean beetle. Since the Mexican bean beetle is widely regarded as a notorious agricultural pest in North America, soldier bugs are generally considered to be beneficial garden insects.
Cotinis nitida, commonly known as the green June beetle, June bug or June beetle, is a beetle of the family Scarabaeidae. It is found in the eastern United States and Canada, where it is most abundant in the South. It is sometimes confused with the related southwestern species figeater beetle Cotinis mutabilis, which is less destructive.
Agrotis ipsilon, the dark sword-grass, black cutworm, greasy cutworm, floodplain cutworm or ipsilon dart, is a small noctuid moth found worldwide. The moth gets its scientific name from black markings on its forewings shaped like the letter "Y" or the Greek letter upsilon. The larvae are known as "cutworms" because they cut plants and other crops. The larvae are serious agricultural pests and feed on nearly all varieties of vegetables and many important grains.
Viburnum dentatum, southern arrowwood or arrowwood viburnum or roughish arrowwood, is a small shrub, native to the eastern United States and Canada from Maine south to northern Florida and eastern Texas.
Xanthogaleruca luteola, commonly known as the elm-leaf beetle, is a beetle species in the family Chrysomelidae that is native to Europe but invasive in other parts of the world.
Abantiades latipennis, known as the Pindi moth, is a species of moth in the family Hepialidae. It may also be referred to as a swift moth or a ghost moth, as this is a common name associated with Hepialidae. Endemic to Australia and identified in 1932, it is most populous in temperate rainforest where eucalypti are prevalent, as the larvae feed primarily on the roots of these trees. Females lay eggs during flight in a scattering fashion. The larvae live for over eighteen months underground, while adult moths survive for approximately one week, as they have no mouthparts with which to feed. The moths are preyed upon by a number of predators, including bats and owls. Brown in colour overall, males are paler and the identifying silver bars of the male's wings are more prominent than those of the female's, with dark margins. Male adults are generally smaller.
Coleomegilla maculata, commonly known as the spotted lady beetle, pink spotted lady beetle or twelve-spotted lady beetle, is a large coccinellid beetle native to North America. The adults and larvae feed primarily on aphids and the species has been used as a biological control agent. Based on name connotation and to avoid confusion with other species also called "spotted ladybeetle", spotted pink ladybeetle is probably the most appropriate common name for this species.
Cydalima perspectalis or the box tree moth is a species of moth of the family Crambidae, first described by Francis Walker, the English entomologist, in 1859. Native to Japan, China, Taiwan, Korea, far-east Russia and India, it has invaded Europe; first recorded in Germany in 2006, then Switzerland and the Netherlands in 2007, Great Britain in 2008, France and Austria in 2009, Hungary in 2011, then Romania, and Spain. It has been seen in Slovakia, Belgium and Croatia.
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.
Viburnum australe, known by the common name Mexican arrowwood, is a woody plant in the family Adoxaceae. It is found in northeastern Mexico and western Texas.
Phratora vitellinae, the brassy leaf beetle, formerly Phyllodecta vitellinae, is a beetle of the family Chrysomelidae found in Europe and Asia. It feeds on Populus and Salix species. The evolution of its host plant preferences and the mechanism by which it uses host plant chemicals to make a larval defensive secretion have been the subject of intense study by research groups in Europe and the Nordic countries.
Hypera postica, commonly known as the alfalfa weevil, is a species of beetle in the superfamily Curculionoidea; it can be found in alfalfa fields throughout Europe. Considered a destructive threat to alfalfa production in North America, several accidental introductions have been successfully countered though the use of a variety of biological control species.
Zygogramma exclamationis, commonly known as the sunflower beetle, is a species of leaf beetle belonging to the family Zygogramma. It is regarded as a pest of sunflower crops in North America.
Liriomyza trifolii, known generally as the American serpentine leafminer or celery leafminer, is a species of leaf miner fly in the family Agromyzidae.
Deporaus marginatus, commonly known as the mango leaf-cutting weevil, is a species of leaf weevil in the beetle family Attelabidae. It is a light tan colour with black elytra, and is found in tropical Asia where it is a pest of mango.