black fly

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black fly

or

blackfly

(blăk′flī′)
n.
Any of various small, dark-colored biting flies of the family Simuliidae, the larvae of which attach to rocks in streams and other flowing waters. Also called buffalo gnat.
A Simulidium spp fly measuring 1–5 mm which sucks blood and causes haemorrhagic oozing papules, edema and lymphadenopathy which, in tropical Africa and Central and South America, is a vector for Onchocerca volvulus

black fly

One of various small, hump-backed, dark coloured biting flies of the family Simuliidae . The black fly Simulium damnosum transmits ONCHOCERCIASIS.

black fly

a term which covers a number of genera and species. In some areas in the summer months they cause a great deal of insect worry to animals. The annoyance may be sufficiently severe to result in animals being injured or even killed while stampeding. They also play a part in the transmission of Onchocerca spp. Called also buffalo gnat, sandfly, cnephia, Austrosimulium pestilens, A. bancrofti. See also simuliumarticum, simuliumornatum.
References in periodicals archive ?
A variety of factors (water temperature, velocity, streambed, dissolved oxygen concentration and vegetation) acting in concert have been found to influence the blackfly richness in the streams of central Amazonia (8).
Nasturtiums are a clever way to get rid of blackfly they are attracted to them, so when you dig them up and the blackfly go with them.
You will find greenfly and blackfly - small, wingless insects - on the tips of shoots and buds and the undersides of leaves, both outdoors and in the greenhouse.
In an 11-country area of West and Central Africa, the Onchocerciasis Control Program has used helicopters since 1974 to spray larvacides on breeding sites in order to control the blackfly that is responsible for transmission of onchocerciasis.
He thinks it is something called a blackfly which can cause a severe reaction in some people, including breathing difficulties.
He repeated his observations after carrying out several tests and each time the runner beans were blackfly free.
PINCH out the growing tips on broad beans to reduce the risk of attack by blackfly.
It acts by contact and systemic action against whitefly, greenfly, blackfly, mealy aphid and woolly aphid, as well as vine weevil and lily beetle.
Broad beans sown now are often cropping before blackfly, the scourge of the crop, appear.
Kingsbury water park was closed after the visitors suffered breathing difficulties as a result of a massive allergic reaction to an attack by what is believed to be blackfly.
Top of the list have been slugs and snails, followed by blackfly.
Thyme, garlic and southernwood or artemisia will keep blackfly at bay, while marjoram and mint will repel ants.