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Synanthedon Scitula
''Synanthedon scitula'', the dogwood borer or pecan borer, is a moth that is a pest of many plants including the dogwood and pecan. It is notorious due to the severity of damage it can cause and its widespread geographical distribution. Description and ecology Eggs ''Synanthedon scitula'' eggs are a light chestnut brown color and are 0.4 to 0.6 millimeters across. They are marked with a hexagonal pattern of lines. The eggs are laid singly by the mother and take 8–9 days to hatch. Larvae ''Synanthedon scitula'' larvae are cream colored with a red head. They pass through six instars ranging in length from 1 millimeter to 15 millimeters or more at the last instar. Soon after hatching they burrow into the burrknot tissue or areas around bark scales. As the dogwood borer larvae feed red frass is pushed to the surface. It collects and is pushed to the surface and held together by silk. Larvae overwinter in their feeding tunnel, and resume eating whenever the temperature exceeds 45 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thaddeus William Harris
Thaddeus William Harris (November 12, 1795 – January 16, 1856) was an American entomologist and librarian. His focus on insect life cycles and interactions with plants was influential in broadening American entomological studies beyond a narrow taxonomic approach. He was an early agricultural entomologist and served as a mentor and role model for others in this new field. For 25 years Harris served as the librarian of Harvard University where oversaw the rapid growth of the library and introduced one of the earliest American library card catalogs.Elliott 2000 Life and career Thaddeus William Harris was born in Dorchester, Massachusetts on November 12, 1795. His father, Thaddeus Mason Harris, was a Unitarian minister who served at the church on Meeting House Hill and had also for a time served as librarian of Harvard. Harris himself received his undergraduate degree at Harvard in 1815, and then went on to study medicine there, receiving his M.D. in 1820. He went into medical pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synanthedon Scitula Damage
''Synanthedon'' is a genus of moths in the family Sesiidae. Species *'' Synanthedon acerni'' (Clemens, 1860) *'' Synanthedon acerrubri'' Engelhardt, 1925 *''Synanthedon aequalis'' (Walker, 865 *''Synanthedon aericincta'' (Meyrick, 1928) *'' Synanthedon africana'' (Le Cerf, 1917) *'' Synanthedon albicornis'' (Edwards, 1881) *'' Synanthedon alenica'' (Strand, 913 *''Synanthedon alleri'' (Engelhardt, 1946) *'' Synanthedon andrenaeformis'' (Laspeyres, 1801) **''Synanthedon andrenaeformis andrenaeformis'' (Laspeyres, 1801) **''Synanthedon andrenaeformis tenuicingulata'' Špatenka, 1997 *'' Synanthedon anisozona'' (Meyrick, 1918) *'' Synanthedon apicalis'' (Walker, 865 *'' Synanthedon arctica'' (Beutenmüller, 1900) *''Synanthedon arizonensis'' (Beutenmüller, 1916) *''Synanthedon arkansasensis'' Duckworth & Eichlin, 1973 *'' Synanthedon astyarcha'' (Meyrick, 1930) *'' Synanthedon aulograpta'' (Meyrick, 1934) *'' Synanthedon aurania'' (Druce, 1899) *''Synanthedon auripes'' (Hampson, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frass
Frass refers loosely to the more or less solid excreta of insects, and to certain other related matter. Definition and etymology ''Frass'' is an informal term and accordingly it is variously used and variously defined. It is derived from the German word ''Fraß'', which means the food takeup of an animal.M. Clark and O. Thyen. The Oxford-Duden German Dictionary. Publisher: Oxford University Press 1999. The English usage applies to excreted residues of anything that insects had eaten, and similarly, to other chewed or mined refuse that insects leave behind. It does not generally refer to fluids such as honeydew, but the point does not generally arise, and is largely ignored in this article. Such usage in English originated in the mid-nineteenth century at the latest. Modern technical English sources differ on the precise definition, though there is little actual direct contradiction on the practical realities. One glossary from the early twentieth century speaks of "...excrem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burrknot
Burrknot is a tree disorder caused by the formation of adventitious root primordia. Although previously classified as disease, is now classified as a disorder, as it is no longer believed to be pathogenic. First looks like a smooth orange bulge growing from the stem or a branch, later multiple adventitious roots form. Description The occurrence of Burrknot is quite common among rootstock, often found on apple tree M ( Malling ) and MM ( Malling-Merton ) rootstocks. At onset it begins to look like a smooth orange bulge growing from the stem or a branch, later, during one to three years, multiple adventitious roots begin to form. When located on the roots, it is considered to be not very dangerous, but it makes it easier for diseases to infect the tree, and leaves it more susceptible to insects. When many burrknots are present on various location in the tree, it can make the tree unproductive. Treatment It is recommended to protect trees from moisture and shadow at the burrkn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sesiidae
The Sesiidae or clearwing moths are a diurnal moth family in the order Lepidoptera known for their Batesian mimicry in both appearance and behaviour of various Hymenoptera. The family consists of 165 genera spread over two subfamilies, containing in total 1525 species and 49 subspecies, most of which occur in the tropics, though there are many species in the Holarctic region as well, including over a hundred species known to occur in Europe. Morphology Sesiidae are characterized by their hymenopteriform Batesian mimicry, frequently of identifiable species. Most species of Sesiidae have wings with areas where scales are nearly completely absent, resulting in partial, marked transparency. Forewings are commonly elongated and narrow in the basal half. In many species, the abdomen is elongated, with an anal tuft, and striped or ringed yellow, red or white, sometimes very brightly so. Legs are long, thin and frequently coloured, and in some species the hind-legs are elongated. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect Pests Of Ornamental Plants
Insects (from Latin ') are pancrustacean Hexapoda, hexapod invertebrates of the class (biology), class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body (head, Thorax (insect anatomy), thorax and abdomen (insect anatomy), abdomen), three pairs of jointed Arthropod leg, legs, compound eyes and one pair of antenna (biology), antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of Extant taxon, extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all Natural environment, environments, although only a small number of species reside in the oceans, which are dominated by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
