Aphytis melinus

These are live insects and MUST be shipped OVERNIGHT. No USPS or ground shipping.


RELEASE RATES: *Note - These rates are for preventative control only, multiple releases and/or higher quantities are necessary for heavier infestations.
Light 1-3 per sq. ft. monthly, as needed
Heavy 3-6 per sq. ft. bi-weekly as needed


RELEASE INSTRUCTIONS: Release Aphystis melinus immediately. Release in 1-3 week intervals upon detection of scales until low scale numbers are observed. Release on shaded side of tree during temperatures below 90°F. Release every fifth or sixth tree every fifth or sixth row.

DESCRIPTION: Aphytis melinus is a small light yellow parasitic wasp about 1mm in size. The wasp parasitizes various types of armored scale. The wasp lays eggs under the waxy scale covering, created by the scale. The parasite larvae develop under the scale covering. The window for female control is during the second and third instars of development while she is a virgin. The male's window is during the second instar and pre-pupae development. It is during these developmental stages that the scale is not affixed to host plant thus allowing the parasites to get under the scale. In some cases the scale is killed by adult hosts feeding on them. Once the scale is parasitized it looks dried out and when examined closely may have dark spots. 

LIFECYCLE: At 80° F Aphytis take 13-18 days to develop from egg to adult. Adults live for approximately 10-16 days (up to 25) and deposit 6-8 eggs daily.