AtheLiv (Dalotia coriaria), commonly known as rove beetles, are small, dark-brown predators (3–4 mm long) highly effective at locating and consuming soil- and surface-dwelling pest larvae. While well known for controlling fungus gnats, AtheLiv is also excellent for suppressing shore fly larvae. As a generalist predator, it can survive on algae and plant debris when prey is scarce, remaining active for several weeks and providing continuous pest suppression in greenhouse environments.
Feeding Habits
AtheLiv adults and larvae actively hunt for soil dwelling pests, feeding on larvae, pupae, and other small invertebrates. Both life stages contribute to effective pest suppression:
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Larvae feed on shore fly larvae and other small pests within the media or algae mats.
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Adults are highly mobile, capable of crawling and flying to locate hotspots.
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Can survive on algae, plant debris, and non-prey material when pest populations are low, maintaining continuous IPM support.
Target Pests
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Shore fly larvae
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Fungus gnat larvae
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Thrips pupae
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Root aphids
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Springtails
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Other soil- and media-dwelling pests
Life Cycle
Egg Stage: Females lay eggs in soil, growing media, or moist surfaces where shore fly larvae develop.
Larval Stage: Larvae feed on shore fly larvae and other small pests within the media or algae mats, reducing pest populations before they can damage crops.
Pupal Stage: Pupation occurs within the soil or growing media, providing protection as they transform into adults.
Adult Stage: Adults are highly mobile, capable of crawling and flying to locate shore fly hotspots. Females begin laying eggs 1–2 days after emergence, producing an average of 90 eggs over their lifespan, with a roughly 1:1 male-to-female ratio.
Key Benefits
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Benefit |
How It Helps Growers |
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Continuous shore fly suppression |
Remains active even when prey is scarce by feeding on dead organic matter, reducing population buildup. |
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High mobility |
Crawling and flying ability ensures thorough coverage of benches and trays. |
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Broad-spectrum predation |
Controls multiple soil- and media-dwelling pests, not just shore flies. |
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Long-term activity |
Can survive for weeks without prey, supporting ongoing IPM programs. |
Application Guidelines
- Apply beetles evenly to soil or growing media in the early morning or late afternoon.
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Early introduction is recommended to establish a healthy predator population before shore fly outbreaks occur.
Storage
- Use immediately upon receipt for best results.
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If short-term storage is necessary, keep at 10 °C.
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Avoid direct sunlight, extreme heat, or freezing.
Handling
- Handle beetles gently to prevent injury.
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Optimal activity occurs at 25 °C, with performance maintained between 12–35 °C and media moisture of 60–80 %.
Recommended Release Rates
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Use Type |
Release Rate |
Frequency |
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Preventive |
2–4 beetles/m² |
Single release (batches of 50–100 beetles) |
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Curative |
5–10 beetles/m² |
Single release (batches of 50–100 beetles) |
Release rates may vary depending on crop type, media, and infestation level. Early introduction is recommended to establish a healthy predator population before shore fly outbreaks occur. For tailored guidance, consult your local GrowLiv Biologicals representative.