Flower fly: ways to combat it at home


There are indoor plants in almost every home. They give people positive emotions and purify the air. To continue to benefit from green crops, they need to be properly cared for. Its important component is pest control. If you find flower flies or larvae in indoor plants, you need to immediately begin solving this problem.

Protecting indoor plants from flower flies

What do insects look like?

Flower flies, or sciarids as they are also called, have an elongated body from 1.5 to 4 mm. Color dark gray. Juveniles have a light gray body. There are 2 pairs of wings on the back. The first are well developed, the second are reduced. The insect feeds using sucking mouthparts.

The female is capable of laying up to 300 eggs. The fly lays the eggs next to the roots. If you look closely, you will notice that the eggs are translucent.

After 6-7 days, the larvae are born. Body length from 2 to 10 mm. Large larvae leave a slimy trail on the soil. The roots of the plant act as food. After 2 weeks the larva turns into a pupa. The insect stays in this state for about 5 days.

Important: sciarids prefer to settle on violets, koleria and achimenes.

Taxonomy

Flower flies are generally divided into three subfamilies. Syrphinae, Eristalinae and Microdontinae and about 190 genera. Sometimes, however, Microdontinae is considered a separate family, and sometimes the tribubus is broken. Pipizini into a separate subfamily. The division into tribe and genus is constantly revised in accordance with new discoveries by researchers, not least with the help of DNA analyses.

Together with the eye-fly family (Pipunculidae), flower flies form the superfamily Syrphoidea.

Family in the Nordic countries

Below are all 78 genera found in Norden. Table columns can be sorted.

Subfamily Syrphinae

Swedish nameScientific nameTribusAuthorNumber of species in the Nordic countries
Needle flower fliesVacchaBacchiniFabricius, 18051
Grass flower fliesMelanostomyMelanostominiShiner, 18603
Fly leg flowerPlatycheirusMelanostominiLepeletier and Serville, 182844
Malblom fliesXanthandrusMelanostominiVerrall, 19011
Steppe flower fliesParagusParaginiLatreille, 18048
Wasp flower flyingChrysotoxChrysotoxinMeighen, 180310
Forest flower fliesDasisirfSirfiniEnderlein, 193810
Corner flower fliesDideaSirfiniMakkar, 18343
PetalsDorosSirfiniMeighen, 18031
Sunflower fliesEpistropheSirfiniWalker, 185211
May flowersEpistrophellaSirfiniDushek and Laska, 19671
Moving flower fliesEpisirphusSirfiniMatsumura and Adachi, 19171
Conifer fliesEriozoneSirfiniShiner, 18601
Wildflower fliesEupeodesSirfiniOsten-Sacken, 187716
Flies with wedge-shaped flowersFagizirfSirfiniDushek and Laska, 19671
Scented flower fliesLeucozonaSirfiniShiner, 18604
Conifer fliesMegazirfSirfiniDushek and Laska, 19671
Flower girl fliesMelanginaSirfiniVerrall, 19019
Flower girl fliesMeligramSirfiniFrey, 1946.2
Flower girl fliesMeliskaevaSirfiniFrey, 1946.2
Bush flying flowerParasirphSirfiniMatsumura, 1917.10
Glass wing flower fliesSkaevaSirfiniFabricius, 18053
DragonfliesSphaerophoriaSirfiniLepeletier and Serville, 182817
Sunflower fliesSirfSirfiniFabricius, 17756
Flies with wedge-shaped flowersXantogramSirfiniShiner, 18603

Subfamily Eristalinae

Swedish nameScientific nameTribusAuthorNumber of species in the Nordic countries
?Arbustorum
Bronze flower fliesCalliceraCallicheriniTank, 18092
GriffelblomflugorCerianaCerioidiniRafinesque, 18151
sawdust fliesSphyxiemorphCerioidiniRondani, 18501
Flower grass fliesCheilosiaRingiiniMeighen, 182254
Golden flower fliesFerdinandRingiiniRondani, 18442
Flower grass fliesPorteviniaRingiiniGoffe, 1944.1
Beak flower fliesRingiaRingiiniScopoli, 17632
Ear flower fliesPelecoceraRingiiniMeighen, 18224
sawdust fliesBraciopaChrysogastriniMeighen, 182210
Meadow flower fliesChrysogasterChrysogastriniMeighen, 18033
Mountain flower fliesChrysosyrphusChrysogastriniSedman, 1965.2
Bark flower fliesHammerschmidtiaChrysogastriniSchummel, 18341
Metal flower fliesLejogasterChrysogastriniRondani, 18572
Meadow flower fliesMelanogasterChrysogastriniRondani, 18574
Park flower fliesMyoleptaChrysogastriniNewman, 18381
Dwarf flower flyingNeoasciaChrysogastriniWilliston, 1886.8
Glossy flower fliesOrtoneurChrysogastriniMakkar, 18298
The flower on the waist fliesSpheginaChrysogastriniMeighen, 18226
Dusty flower fliesAnasimiaEristaliniShiner, 18645
Il fliesEristalinEristaliniRondani, 18452
Il fliesEristalisEristaliniLatreille, 180418
Swamp flower fliesHelophilusEristaliniMeighen, 18227
Sävblom fliesLejopsEristaliniRondani, 18571
Hole flower fliesMallotaEristaliniMeighen, 18222
The skull is flyingMyathropaEristaliniRondani, 18451
Beach flower flyingParhelophilusEristaliniHirschner, 18973
Bear flower fliesArctophilaEristaliniShiner, 18602
Peat flower fliesSericomiaEristaliniMeighen, 18035
Moon flowersEumerusEumeriniMeighen, 18228
Soot flower fliesPsilotaEumeriniMeighen, 18222
Narcissus flower fliesMerodonEumeriniMeighen, 18032
The gall flower fliesGoeringiaPipiziniRondani, 18568
The gall flower fliesPipisaPipiziniFallen, 18108
Floral flowers RotlusPipizellaPipiziniRondani, 18563
The gall flower fliesTrichopsomiaPipiziniWilliston, 1888.2
The gall flower fliesTriglyphPipiziniLoew, 18401
Bumblebee fliesVolucellaVolucelliniGeoffroy, 17623
Stump flower fliesBlairXylotiniBillberg, 18202
Mulberry fliesBrachypalpoidesXylotiniGippa, 19781
Mulberry fliesBrachypalpXylotiniMakkar, 18341
Magnificent flower fliesCaliprobolaXylotiniRondani, 18451
Mulberry fliesChalkosirfXylotiniCurran, 19255
Fur flower fliesCriorhinaXylotiniMeighen, 18224
Firewood is flyingLejotaXylotiniRondani, 18571
Fur flower fliesPokotaXylotiniLepeletier and Serville, 18281
Bloody flower fliesHoundmasterXylotiniLatreille, 18041
TaigablomflugorSphecomiaXylotiniLatreille, 18291
Tree flower fliesSpilomiaXylotiniMeighen, 18032
Compost flower fliesSyrittaXylotiniLepeletier and Serville, 18281
Tiger flower fliesTemnostomaXylotiniLepeletier and Serville, 18287
firefliesTropidiaXylotiniMeighen, 18222
Firewood is flyingXylotaXylotiniMeighen, 182212

Subfamily Microdontinae

  • Marsh flies ( Microdon
    ), (Meigen, 1803), 5 species

Causes of the pest

Before you start fighting flies, you need to understand why they appear. There are 3 main reasons:

  1. Untreated soil. Most often this is soil collected from the garden. There are already eggs in the soil that hatch under favorable conditions.
  2. Waterlogging of the soil. Some housewives overwater their plants, especially in the summer. This causes water to stagnate in the pots. A favorable environment attracts the pest.
  3. Open window. This reason is especially relevant if there is a lawn growing under the windows.

If the fly entered the apartment, then after 3 weeks there will be about 300 individuals on the flowers.

Methods with chemicals

Sometimes white aphids appear on flowers.
These are future small flies, another type of pest. We don't think it makes a difference what color of the species attacked your flowers, but what matters is how you get rid of them. If aphids appear on the plant or a swirling cloud of flies near the root, try using a cockroach pencil (crayon, chalk). Simply drawing a line inside the pot will usually help kill the midges.

Pesticides against flower midges are sold in departments for gardeners and gardeners. Before using them, evaluate the subsequent risks: do you want to water the flowers with chemicals, will this harm the plant. Known among flower growers, “Aktara” copes well with small midges when watering. There are other similar chemicals, if you purchased them, follow the instructions strictly.

Important! When treating plants with chemicals, watering should be limited.

Flower midges are annoying and quite hardy creatures. If the methods you have taken have not destroyed them, we suggest the most effective and efficient one.

Ways to fight

If you do not fight the pest, all the plants in your home will suffer. There are 2 ways to eliminate insects:

  • chemical;
  • folk

Each of the options will allow you to quickly deal with the problem that has arisen.

Chemicals

In household chemical stores, you can find products against flower flies. Drugs are divided into groups:

  1. Granules or powders. Effective means include “Thunder 2” and “Fly Eater”. Substances are applied to the soil surface and then watered. The treatment must be repeated after 3 days.
  2. Insecticidal preparations. Experts recommend using Actellik, Fitoverm and IntaVir. Before treating plants, you need to prepare a solution. The proportions are indicated in the instructions for each drug. The substance affects adults and larvae.
  3. Aerosols. “Dichlorvos”, “Raptor” and “Raid” cope with their task perfectly. The aerosol is sprayed onto the plant leaves and soil.
  4. Crayons. The most popular is “Mashenka”. The product is effective only against larvae. The chalk is ground to a powdery consistency and then poured onto the soil.

Important: regardless of the product chosen, you must strictly follow the instructions, otherwise you can harm the plants.

Folk remedies

Housewives who are afraid of harming flowers are advised to use traditional methods. The most effective control options include:

  1. Potassium permanganate solution. To disinfect the soil, it is necessary to dilute the product in water. The solution should have a light pink tint. Water the soil generously with the prepared product. The procedure is repeated after a few days, when the top layer of soil has dried. The method is effective against larvae and adults.
  2. Matches. If the pot is small, it is enough to use 20 matches. They are placed in the soil with their heads down. After this, the soil is watered. When the sulfur begins to dissolve, the pest will die.
  3. Green dill. If desired, you can use a dry plant, but the effect will be less. The dill is crushed and then poured onto the soil.
  4. Wood ash. The product allows you to get rid of the larvae. Ash is sprinkled in a thin layer on the ground. This product will not only get rid of the pest, but will also become a good fertilizer for the plant.

Folk methods differ from chemical means in that they are not capable of causing harm to flowers.

Midges in indoor flowers

Parasites often appear in plants in winter. It is at this time that the plants are weak. When small midges are found in indoor plants, first of all you need to determine to what stage the damage to the flower has reached. Damage is caused both by the insects themselves and their larvae. If you do not immediately resort to any measures, the flower will die.

Initially, it is recommended to dig out the soil in the flower pot and make sure that there are no fly larvae there. After all, getting rid of midges is much easier than getting rid of their larvae.

Prevention

Although floaters are easy to deal with, it is best to prevent them from appearing. To do this, you need to choose the right soil. It is best if the soil is from a store, as it has already been treated against insects.

If one of the plants is damaged, it should be separated. Before this, the leaves are washed with warm water. Thanks to this procedure, eggs located on the leaves or near the stem will be washed away.

For feeding, only ready-made fertilizers are used. If you collect them yourself, the likelihood of introducing flower fly eggs increases.

Are larvae harmful?

The larvae of harmful hoverflies destroy the entire available crop. The insect prefers:

  • garlic;
  • daffodils;
  • tulips;


Fly larvae often destroy flowers, such as tulips

  • onion;
  • hyacinths;
  • gladioli.

After contact with a harmful larva, the plant stops growing and developing. Withering gradually occurs. The leaves are drying up.

Interesting Facts

Here are some fun facts about hoverflies:

  1. Imitating bees helps flies escape insectivorous birds. The chicks hatch when the wasps fly out. Then their parents teach them to be wary of striped insects. Hoverflies fly out when the chicks grow up and do not risk attacking suspicious flies.
  2. Hoverflies get their name from the characteristic sound of their wings, similar to the murmur of water.
  3. Male wasps hover in the air for a long time, protecting their territory and females during the mating season.

Lifestyle

Males fly at altitudes of 3 meters and above. In flight, hoverflies accurately imitate wasps of the genus Vespula

; when landing, the insects hold their black front legs as if they were antennae, reminiscent of the black antennae of Vespula

, and vibrates them, as a wasp does with its antennae.

Adult insects of both sexes are often found on flowers; for these purposes they visit pastures and meadows; often sit on the leaves of shrubs, etc. Prefers flowers of the following taxa: butane ( Chaerophyllum

), clematis ( Clematis

), dogwood (
Cornus
), hawthorn (
Crataegus
), hogweed (
Heracleum
), honeysuckle (
Lonicera xylosteum
), poppy (
Papaver nudicaule
), buttercup (
Ranunculus
), raspberry (
Rubus idaeus
), elderberry (
Sambucus
), groundsel (
Senecio
), mountain ash (
Sorbus
).

Summer time

Flights occur between June and July.

Reproduction

Larva.

The larvae are xylophages and develop in rotting wood of deciduous trees (maple, alder, birch, beech, aspen, oak, willow and linden). Larval development takes 2 years.

Literature

  • Violovich Ya. A.
    Syrphids of Siberia (Diptera, Syrphidae). Determinant. - Novosibirsk: Science, 1983. - P. 149
  • Gusev V. I., Ermolenko V. M., Svishchuk V. V., Shmigovsky K. A.
    Atlas of mosquitoes of Ukraine. - K.: State Educational and Pedagogical Institute "Radyanska School", 1962. - P. 149 (Ukrainian)
  • Red Book of the Republic of Adygea: Rare and endangered objects of flora and fauna: Part 2: Animals. — Second edition / Department of Environmental Protection, Natural Resources and Emergency Situations of the Republic of Armenia; resp. ed. A. S. Zamotailov; scientific ed. parts 2: A. S. Zamotailov, V. I. Shchurov, M. I. Shapovalov, R. A. Mnatsekanov. — Maykop: Quality, 2012. — P. 356 ISBN 978-5-9703-0347-4
  • Speight MCD
    Species accounts of European Syrphidae (Diptera) // Syrph the Net: the database of European Syrphidae. Volume 65, Glasgow, 2011. - P. 239-240 (English)
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