BeneficialLeafminer
Leafminer parasitoid (Dacnusa) for leafminer
Dacnusa sibirica · leafminer parasitoid
Against leafminer
Dacnusa lays inside young Liriomyza larvae and finds them even at low density, so it suits early-season starts below about 68 °F (20 °C). Parasitised larvae keep mining, so nothing is visible; judge it by fewer new mines. Koppert says it does not parasitise vegetable leafminer (L. sativae) well, and it is sold mainly in Europe.
Rate0.25–0.5 /m² per release, weekly, at least 3 releases
TimingFrom the first mines in early spring or cool houses; add Diglyphus as it warms
TemperatureActive from 59 °F (15 °C); outperforms Diglyphus below about 68 °F (20 °C)
macro · leafminer parasitoid (dacnusa) on leafminer
The pestLeafminerLiriomyza spp.Pale winding tunnels inside leavesFull pest profile →Before you order
Released weekly from the first mines in early spring or in cool houses; lays inside young leafminer larvae and finds them even at low density. Sold mainly in Europe. How it works, how to tell it has established and the supplier list are on the full Dacnusa sibirica profile.
Release calculator
How many do I need?
Area and infestation level in; quantity, cost and a weekly schedule out. Open the calculator →
Other controls for leafminer
- Diglyphus isaeaLeafminer parasitoid · 0.25–3 /m² per release, weekly, at least 3 releases