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Quadraspidiotus Juglansregiae
''Quadraspidiotus juglansregiae'', commonly known as the walnut scale, is a species of armoured scale insect in the family Diaspididae. It is native to North America where it feeds on a wide range of ornamental and forest trees and bushes. Description Adult and young female ''Quadraspidiotus juglansregiae'' are nearly circular, the insect being hidden under a tough flattish scale composed of the exuviae from the first two nymphal instars. There are small marginal notches between the prothorax, mesothorax and metathorax. The upper surface of the scale is pale grey with a reddish-brown spot, and the underside is yellowish. The adult female is about long while the nymphs are smaller. Male nymphs are similar, except that the scale is oval rather than round; after the last moult, the adult male emerges as a small, winged insects similar to a fly in appearance. Male nymphs sometimes burrow under the rim of a female scale forming a daisy-shaped group. Distribution and habitat ''Quadr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Henry Comstock
John Henry Comstock (February 24, 1849 – March 20, 1931) was an eminent researcher in entomology and arachnology and a leading educator. His work provided the basis for classification of butterflies, moths, and scale insects. Early life and education Comstock was born on February 24, 1849 in Janesville, Wisconsin. He studied at Cornell University, graduating in 1874. He also studied at Yale University and the University of Leipzig. In 1878 he married Anna Botsford. She was a wood engraver who beautifully illustrated many of his articles. Comstock became a professor of Nature Studies at Cornell. Career Comstock worked as an instructor at Cornell until 1879. He worked at Vassar College from 1877 to 1879. Between 1879 and 1881 he became the chief Entomologist of the USDA in Washington, D.C. In 1882 he became professor of Entomology and Invertebrate Zoology at Cornell. He also did work in insect morphology and is best known as the co-proposer of the Comstock-Needham system wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cherry
A cherry is the fruit of many plants of the genus ''Prunus'', and is a fleshy drupe (stone fruit). Commercial cherries are obtained from cultivars of several species, such as the sweet ''Prunus avium'' and the sour ''Prunus cerasus''. The name 'cherry' also refers to the cherry tree and its wood, and is sometimes applied to almonds and visually similar flowering trees in the genus ''Prunus'', as in " ornamental cherry" or "cherry blossom". Wild cherry may refer to any of the cherry species growing outside cultivation, although ''Prunus avium'' is often referred to specifically by the name "wild cherry" in the British Isles. Botany True cherries ''Prunus'' subg. ''Cerasus'' contains species that are typically called cherries. They are known as true cherries and distinguished by having a single winter bud per axil, by having the flowers in small corymbs or umbels of several together (occasionally solitary, e.g. ''P. serrula''; some species with short racemes, e.g. '' P. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scale Insects
Scale insects are small insects of the order Hemiptera, suborder Sternorrhyncha. Of dramatically variable appearance and extreme sexual dimorphism, they comprise the infraorder Coccomorpha which is considered a more convenient grouping than the superfamily Coccoidea due to taxonomic uncertainties. Adult females typically have soft bodies and no limbs, and are concealed underneath domed scales, extruding quantities of wax for protection. Some species are hermaphroditic, with a combined ovotestis instead of separate ovaries and testes. Males, in the species where they occur, have legs and sometimes wings, and resemble small flies. Scale insects are herbivores, piercing plant tissues with their mouthparts and remaining in one place, feeding on sap. The excess fluid they imbibe is secreted as honeydew on which sooty mold tends to grow. The insects often have a mutualistic relationship with ants, which feed on the honeydew and protect them from predators. There are about 8,000 descr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pupa
A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their life cycle, the stages thereof being egg, larva, pupa, and imago. The processes of entering and completing the pupal stage are controlled by the insect's hormones, especially juvenile hormone, prothoracicotropic hormone, and ecdysone. The act of becoming a pupa is called pupation, and the act of emerging from the pupal case is called eclosion or emergence. The pupae of different groups of insects have different names such as ''chrysalis'' for the pupae of butterflies and ''tumbler'' for those of the mosquito family. Pupae may further be enclosed in other structures such as cocoons, nests, or shells. Position in life cycle The pupal stage follows the larval stage and precedes adulthood (''imago'') in insects with complete metamorphosi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encarsia
''Encarsia'' is a large genus of minute parasitic wasps of the family Aphelinidae. The genus is very diverse with currently about 400 described species and worldwide distribution. Noyes, J. S. 2003Universal Chalcidoidea database/ref> The number of existing species is expected to be several times higher because many species are still undescribed.Heraty, J. M., et al. (2008) Systematics and Biology of ''Encarsia''. Chapter 4, pp. 71-87 In: Gould, J., et al. (Eds), In: Classical Biological Control of ''Bemisia tabaci'' in the United States. A review of interagency research and implementation. Progress in Biological Control 4. Springer Science and Business Media B. V. 1-343. ''Encarsia'' is a very complex genus, with specimens showing both inter- and intra-specific variations, making morphological classification difficult. The adult wasps, tiny insects about 1 or 2 millimeters in size, are primarily parasitoids of sessile stages of Sternorrhyncha, in particular whiteflies (Aleyrodid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aphytis
Aphytis ( grc, Ἄφυτις), also Aphyte (Ἀφύτη) and Aphytus or Aphytos (Ἄφυτος), was an ancient Greek city in Pallene, the westernmost headland of Chalcidice. Around the middle of the 8th century BC colonists from Euboea arrived. The city became well known for its Temple of Dionysus, which appears to have been built in the second half of the 8th century BC. At Aphytis, Ammon was worshipped, at least from the time of the Spartan general Lysander, as zealously as in Ammonium, sanctuary in Libya. According to Pausanias, the patron of Aphytis, Ammon Zeus, appeared in a dream to Lysander and urged him to raise the siege, which he did. The Temple of Ammon Zeus, whose few remaining ruins date to the 4th century BC structure. During archaic and classical times Aphytis was a prosperous city, minting its own coins, which depicted the head of its patron, Ammon Zeus, the city's economy appears to have been mainly based on farming and vine-culture. Aristotle (Politics V,VI 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chilocorus Orbus
''Chilocorus orbus'' is a species of lady beetle in the family Coccinellidae. It is native to North America. It is a black, domed beetle with two large red spots and is commonly called the twice-stabbed lady beetle. Both adults and larvae feed on scale insects. Description The adult ''Chilocorus orbus'' is a dome-shaped beetle some long with club-shaped antennae. The shiny black elytra bear two oval red patches and the ventral surface of the beetle is reddish. There are other species of black-with-red-spots lady beetle with which this insect might be confused, these being '' Axion plagiatum'', '' Chilocorus kuwanae'', and '' Olla v-nigrum'', however in ''Chilocorus orbus'', the red patches are nearer the head than they are in the other species. The larvae resemble miniature alligators, have long legs and are grey or blackish; they have elongated bodies covered with branching spines. The pupae are also blackish and spiny, but are broader and shorter than the larvae. Distributio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cybocephalus Californicus
''Cybocephalus californicus'' is a species of beetle in the family Cybocephalidae Cybocephalidae is a family of sap, bark and fungus beetles in the order Coleoptera with a wide global distribution. The type genus ''Cybocephalus'' has more than 200 species in it and the entire family has about 220 species in all. Many species ar .... It is found in North America. It can grow to be 0.95 mm to 1.30 mm in size. References Further reading * * Cucujoidea Articles created by Qbugbot Beetles described in 1879 {{cucujoidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Predation
Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the host) and parasitoidism (which always does, eventually). It is distinct from scavenging on dead prey, though many predators also scavenge; it overlaps with herbivory, as seed predators and destructive frugivores are predators. Predators may actively search for or pursue prey or wait for it, often concealed. When prey is detected, the predator assesses whether to attack it. This may involve ambush or pursuit predation, sometimes after stalking the prey. If the attack is successful, the predator kills the prey, removes any inedible parts like the shell or spines, and eats it. Predators are adapted and often highly specialized for hunting, with acute senses such as vision, hearing, or smell. Many predatory animals, both vertebrate and inv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canker
A plant canker is a small area of dead tissue, which grows slowly, often over years. Some cankers are of only minor consequence, but others are ultimately lethal and therefore can have major economic implications for agriculture and horticulture. Their causes include a wide range of organisms as fungi, bacteria, mycoplasmas and viruses. The majority of canker-causing organisms are bound to a unique host species or genus, but a few will attack other plants. Weather and animals can spread canker, thereby endangering areas that have only slight amount of canker. Although fungicides or bactericides can treat some cankers, often the only available treatment is to destroy the infected plant to contain the disease. Examples * Apple canker, caused by the fungus ''Neonectria galligena'' * Ash bacterial canker, now understood to be caused by the bacterium '' Pseudomonas savastanoi'', rather than ''Pseudomonas syringae''. After DNA-relatedness studies ''Pseudomonas savastanoi'' has bee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Botryosphaeria
''Botryosphaeria'' is a genus of pathogenic fungi in the family Botryosphaeriaceae. There are 193 species, many of which are important disease-causing agents of various important agricultural crops. Species *'' Botryosphaeria abietina'' *'' Botryosphaeria abrupta'' *''Botryosphaeria abuensis'' *'' Botryosphaeria acaciae'' *''Botryosphaeria agaves'' *'' Botryosphaeria alibagensis'' *'' Botryosphaeria anceps'' *''Botryosphaeria apocyni'' *'' Botryosphaeria appendiculata'' *''Botryosphaeria araliae'' *''Botryosphaeria archontophoenicis'' *'' Botryosphaeria arctostaphyli'' *''Botryosphaeria arundinariae'' *''Botryosphaeria arxii'' *''Botryosphaeria astrocaryi'' *''Botryosphaeria aterrima'' *''Botryosphaeria atrorufa'' *''Botryosphaeria bakeri'' *''Botryosphaeria berengeriana'' *''Botryosphaeria bondarzewii'' *''Botryosphaeria briosiana'' *''Botryosphaeria brunneispora'' *''Botryosphaeria buteae'' *''Botryosphaeria callicarpae'' *''Botryosphaeria calycanthi'' *'' Botryosphaeria camara ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plum
A plum is a fruit of some species in ''Prunus'' subg. ''Prunus''''.'' Dried plums are called prunes. History Plums may have been one of the first fruits domesticated by humans. Three of the most abundantly cultivated species are not found in the wild, only around human settlements: ''Prunus domestica'' has been traced to East European and Caucasian mountains, while ''Prunus salicina'' and '' Prunus simonii'' originated in China. Plum remains have been found in Neolithic age archaeological sites along with olives, grapes and figs. According to Ken Albala, plums originated in Iran. They were brought to Britain from Asia. An article on plum tree cultivation in Andalusia (southern Spain) appears in Ibn al-'Awwam's 12th-century agricultural work, ''Book on Agriculture''. Etymology and names The name plum derived from Old English ''plume'' "plum, plum tree", borrowed from Germanic or Middle Dutch, derived from Latin ' and ultimately from Ancient Greek ''proumnon'', itself belie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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