Search Results for: Thrips

Thrips

…coming thunderstorm. In Denmark we find more than 100 different species of thrips, and they are quite difficult to distinguish from each other. Appearance The thrips, also referred to as Thysanoptera, are small, dark insects. Typically, it will only grow up to 2 mm. In Denmark, the thrips are also known as cholera flies, as they were seen in Copenhagen during the cholera year 1853, where they mistakenly were linked to the disease. Biology and beha…

Life cycle (Thrips)

…e thrips are very rare; therefore, the eggs develop without fertilization. Thrips go through four larval stages. Thrips are good fliers, but they only fly on calm, warm summer days. They are predominantly an outdoor phenomenon; however, they are also seen on greenhouse plants and indoor plants and can sometimes stray into houses in large numbers. They crawl into narrow crevices and you can often find dead thrips behind wallpaper, behind the glass…

Thrips

Fig. 13. Thrips. Thrips Thrips (Thysanoptera) are also known as thunder flies, thunder bugs, storm flies, thunder blights, storm bugs, corn flies and corn lice. Their legs usually end in two tarsal segments with a bladder-like structure and their four very wings have ciliated fringes on the edges. In Denmark, there are more than 100 different thrips species and it is difficult to distinguish between them. Most are small, less than 2 mm long, blac…

Thrips

…Thrips (Latin: Thysanoptera) On warm summer days the tiny insects known as thrips may occur in enormous numbers and even enter houses. They have a tendency to creep in under clothing, or into ears, mouths and eyes, and they tickle as they move around on the skin. Thrips feed by sucking plant juices, but occasionally they may insert their mouth- parts into human skin, in some cases causing a rash and itching. They can jump by striking the abdomen a…

Thrips

…the skin producing a tickling sensation, and because they have a tendency to creep beneath clothing and into ears, mouth and eyes. Although, as already mentioned, they are plant suckers their mouthparts can penetrate human skin. Under certain circumstances thrips enter houses in large numbers. They have a special habit of creeping into narrow spaces and they are therefore found behind wallpaper and even behind the glass of pictures. However, they…

Thrips

Bites and irritation

…ers. The bites often cause redness and itching. Prevention and eradication Thrips fought quite vigorously when seen as pests on plants, but once they are flying and are numerous, there is nothing to do outdoors. The thrips which make it inside, die very quickly – the climate inside is too dry for them. If you are not willing to wait for them to die naturally, they can be eradicated with an insect spray with pyrethrin I and II + piperonyl butoxide….

Prevention and eradication

Fig. 15 Thrips, natural size. Thrips fought quite vigorously when seen as pests on plants, but once they are flying and are numerous, there is nothing to do outdoors. The thrips which make it inside, die very quickly – the climate inside is too dry for them. If you are not willing to wait for them to die naturally, they can be eradicated with an insect spray with pyrethrin I and II + piperonyl butoxide. It’s hard to effectively keep thrips out. T…

Springtails

…Springtail (Latin: Collembola) Like thrips the springtails can also jump. They do not bite humans but may cause irritation if there are large numbers crawling around on the skin….

KEY II, animals with 3 pairs of legs; insects

…lacking……. Wings small, with hairy fringes. Small animals, less than 2 mm Thrips. All the wings transparent, possibly with a few hairs Front pair of wings not transparent With a single pair of transparent wings flies. With 2 pairs of transparent wings Front pair of wings larger than back pair wasps, bees, chalcids, ichneumons, ‘flying ants’, Wings all about the same size, transparent or smoke-coloured winged termites. Wings all about the same siz…

Where do the biting and irritating organisms come from?

From outside, through windows and doors: Gnats, mosquitoes Stable flies Thrips From birds’ nests or nesting boxes: Bird fleas Poultry mites Pigeon ticks Martin bugs Forest flies From dog or cat, or from their quarters: Fleas Certain mites From other humans: Itch mite Head lice Body lice Crab lice Human fleas From foodstuffs: Certain mites When travelling (in hotel rooms): Bed bugs Fleas From second-hand furniture or paintings: Bed bugs From publi…

Frequency

…0 European adder (Lat. Vipera berus) 0 0 1 0 Honey bee 0 1 0 Bumblebee 0 1 0 Horse-flies 1 0 Hornets 0 1 0 0 0 Cat fleas 0 1 0 0 Thrips 0 1 0 0 0 The crab louse 0 0 0 0 0 1 Bird mites 0 0 0 1 0 Hedgehog fleas 0 0 0 1 0 0 Head louse (Lat. Pediculus humanus capitis) 0 1 0 0 …

Where?

…t mites, storage mites and spiders. These are mainly troublesome outdoors: Thrips, common flower bugs, water bugs, rusty tussock moth larvae, mosquitoes, black flies, midges, horse flies, bees, hornets, ants, hedgehog fleas, bird fleas, caster bean tick, harvest mites, stinging jellyfish, leeches, greater weevers and the European adder. Of course, the line that separates the two groups in this division of the animals is quite thin. The outdoor spe…

Index

…oea pinivora The American house dust mite The blue jellyfish The crab louse The Eastern Pine Processionary The European adder The European house dust mite The European viper The Greater weever The lesser weever The pigeon mite The red jellyfish The velvet mite The water scorpion Thrips Thunderblights Thunderbugs Thunderflies Thysanoptera Tick-para1ysis Ticks To feel lousy Tovinger Trachinus draco Trachinus vipera Trichodectes canis Trichomonas vag…