Aphelinus - biological control for foxglove, potato and lettuce aphids

 Description

Aphelinus abdominalis is a specialized parasitoid wasp of aphids. This biocontrol agent select aphids by palpating them with their antennae. Having located a host aphid of an appropriate size and species, the tip of the ovipositor is inserted into the abdomen of the aphid and an egg is deposited. The egg hatches within the aphid and the resulting larva consumes the body contents, finally feeding on vital organs when nearly fully grown. The aphid host continues to feed and grow during this process and may initially produce some offspring. As the development of the parasite larva proceeds this ceases.

When the parasite larva is fully grown the host dies and a distinctive black mummy is formed. At (68°F) 20°C this occurs 7 days after parasitism. The mummy then takes a further 14 days to develop before an adult wasp emerges.

In one of the principal hosts, the potato aphid (Macrosiphum euphorbiae), Aphelinus prefers to parasitize second and third instar aphids. Larger aphids are less frequently attacked, while first and small, second instars are used as a source of food by the adults.

Host feeding is an important source of mortality in the aphids, with each female killing approximately 2 aphids per day. By host feeding, this natural enemy obtains a source of proteins, which allows it to continue development of eggs and so increase the total number of offspring it produces.

Application Rates

• Preventative 2-5 per 100 sq ft. weekly or as needed.
• Curative 10-25 per 100 sq ft. weekly or as needed.
• Remove sticky cards prior to release and leave bottle in space for continued emergence from mummies. People and pet friendly. 

Instructions for Use

Aphelinus is best suited for preventing outbreaks of aphids early in risk periods. It may also be used at higher rates and in conjunction with other biocontrols to bring moderate infestations under control. Chemical free pest control, natural and sustainable for IPM programs. 

Release Aphelinus in the infested area by gently tapping them out. Concentrate the release on or near the most heavily infested plants or where aphids are most likely to make an appearance. Aphelinus prefer to walk rather than fly and are not very mobile. Leave the open bottle in the crop to ensure all have exited. 

Information courtesy of Syngenta Bioline

Orders for Aphelinus abdominalis must be received by 10am on Wednesday for shipment the following week.  If the deadline is past, please call us and we will help you find a solution ASAP. (360) 656-6680

See order deadlines and shipping information.

Learn about release instructions for beneficial insects.