The following tables have the estimated DD accumulation, base 50F, from Jan. 1 and the arthropod events that are associated with different DD accumulation. Through the End of July At least the cool, wet weather is not favorable for mite build-up. Over the last two weeks, very few mites have been observed in orchards that we have visited. However, a few orchards had populations of ERM eggs on leaves that warranted close watching. In this section of the Vermont Apple Newsletter , a different arthropod or disease is featured.
Adult fly is slightly smaller than a common housefly.
It has a white dot on its thorax and black banding in the shape of an M on its wings. The larvae resemble typical housefly maggots. AMF overwinters in the pupal stage in the soil. Adults emerge in mid to late June, and mate. The females begin laying eggs under the skin of the apple 10 to 14 days later.