black fly

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black fly

black fly, name for any of the flies of the family Simuliidae. The black fly is about 1-8 in. (3.2 mm) long and has large eyes, short legs, a stout, humped back, broad gauzy wings, and piercing-sucking mouthparts. The female inflicts a painful bite, sucking the blood of birds and mammals, including humans. Livestock and other large mammals may be bitten to death by swarms of black flies; the black fly problem of some subarctic regions is so severe as to make human settlement impossible. Some tropical African and American species carry the larvae of roundworms that in human hosts cause swellings of the skin and eyes and sometimes blindness. The eggs of black flies are commonly laid in masses on wet rocks, logs, and plants; the larvae live in fast flowing water, clinging to rocks by means of anal sucking disks and straining out organic matter by fanlike head organs. Pupation occurs underwater; the pupa accumulates a bubble of air in its case, enabling it to rise to the surface and emerge when mature. The Adirondack black fly, Simulium hirtipes, the white stockinged black fly, S. venustum, the buffalo gnat, S. pecuarum, and the turkey gnat, S. meridionale, are common species. Black flies are classified in the phylum Arthropoda, class Insecta, order Diptera, family Simuliidae. See insect.
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Considering the destructive ability of the citrus blackfly, it is necessary to adopt effective programs for managing the insect in the state of Piaui, to reduce the population and spread of this insect.
Therefore, this work aimed to analyze the citrus blackfly spatial and temporal distribution in citrus orchards in agroforestry and monoculture systems, using geostatistics methodology to help sampling optimization.
All the water variables and blackfly density at each place have been expressed as mean [+ or -] standard error of mean (SEM).
Since it was not possible to assume a direct correlation between the results obtained with the vacuum cleaner and the sweep net techniques, 1992 and 1993 mosquito and blackfly data were analyzed separately.
For example, grow Calendula officinalis (pot marigolds) under apple trees and plums as they will draw away any blackfly.
MY honeysuckle is covered in blackfly. What can I do?
Infestations of aphids (both greenfly and blackfly) tend to be worse in warm weather as the tiny insects attack the plants, which can end up twisted and discoloured, while some buds may fail to open.
Keep an eye out for an early attack of aphids (greenfly, blackfly and so on) on herbaceous plants and roses.
Within a short period of time, greenfly and blackfly can smother the stems of plants as they invade your garden, reproducing quickly.
Although this worm infects cattle, not people, it is spread by the same blackfly that distributes O.