Dalotia (Atheta) coriaria

Dalotia (Atheta) coriaria species of staphylin


Dalotia (Atheta) coriaria is a native species of soil-dwelling rove beetle which feeds on small insects and mites (e.g. shore flies, fungus gnats, moth flies, springtails, root mealybug crawlers, aphids, spider mites). Adults and larvae are active and aggressive predators. To find preys, this rove beetle are able to move in organic matter (e.g residues of plants), drains and on the plant leaves. Dalotia (Atheta) coriaria adapts to different substrates such potting soil, coconut fiber, rockwool and can be introduce to hydroponic systems. In greenhouses, it establishes easily and maintain a permanent pression on pest populations.

Adults are 3-4 mm long and are slender with short wing covers. They are light to dark brown in color. Females lay eggs in the soil and larvae hatch 2-3 days later. Dalotia larva are thin and yellow to brown in color. They live in the ground. Both adults and larvae are active and voracious predators. Adult Dalotia have an interesting habit of curving the abdomen upwards like scorpions and can run or fly when disturbed. Since they actively fly, they rapidly colonize the release area.

Dalotia (Atheta) coriaria is compatible with the predatory mite Stratiolaelaps scimitus (Hypoaspis miles), Nematodes Steirnenema spp. and Heterorhabditis spp. and with bio-insecticides based on pathogenic fungus such as Bioceres WP



This product can be purchased on our online store for producers under 2000 ft2 or residential. For a commercial purchase (2000 pi 2 and more), contact us.

Targeted crops

  • Vegetables (cucumbers, tomatoes, peppers, lettuce, etc.)
  • Ornamentals
  • Mushrooms
  • Cannabis

Targeted pests

  • Fungus gnats
  • Shore flies
  • Thrips (pupae)
  • Mites
  • Roots Aphids
  • Moth eggs

Life cycle

  • The sex ratio is equal, 1:1 females to males.
  • Eggs hatch in 3-4 days into young larval stages.
  • Each Atheta consumes 10-20 prey per day.
  • Larvae resemble adults, pupal chambers are constructed out of silk.
  • Adults live for 21 days .
  • Adults are non-diapausing under greenhouse conditions.



  • AB010 - Dalotia coriaria - 100 adults


  • AB011 - Dalotia coriaria - 1000 adults


Dalotia (Atheta) coriaria is most effective when applications are started before fungus gnat population becomes well established or while numbers are still low (below 10/trap/week). One application of Dalotia per crop cycle is usually sufficient if started early in the season.

To ensure reproduction and mating, release a maintenance rate of 50-100 Dalotia per production area. Be sure to treat areas with wet, exposed areas of soil, where fungus gnats and shore flies are likely to breed.

Introduction rate
Introduction Quantity Surface Frequency Duration
Preventive 1 per m2 or 100-1000 per greenhouse weekly or bi-weekly until a total of 1/ m2(or 10/sq.ft)
Curative medium 5 per m2 weekly or bi-weekly as needed
Curative heavy 10 per m2 weekly or bi-weekly as needed
Maintenance 50-100 center of the greenhouse as needed as needed

Product data sheet(s)

Fiche signalitique
Dalotia (Atheta) coriaria

Additional information

  1.   - Atheta Technical Manual - Applied Bio-nomics Ltd (Applied Bio-Nomics Ltd, 2018)
  2.   - Compatibility of Atheta coriaria with other biological control agents and reduced-risk insecticides used in greenhouse floriculture integrated pest management programs for fungus gnats (The Canadian Entomologist, 2006)
  3.   - Fungus Gnats and Shoreflies in Greenhouse Crops (OMAFRA, 2016)

Targeted pest

Targeted production

Recent news

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fungus gnats

Fungus gnat larvae cause root injuries and help the development of fungal diseases (eg Pythium and Fusarium).

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Biological control products and beneficial insects for farmers and greenhouse growers