Neomyzus circumflexus

Mottled arum aphid

General

The mottled arum aphid, Neomyzus circumflexus, has a cosmopolitan distribution and a wide host range. In temperate climates it is primarily a pest in greenhouses where it attacks many ornamentals, including chrysanthemums, Begonia and Fuchsia, and also sweet pepper. 

Life cycle and appearance of Mottled arum aphid

Aphids moult four times before reaching adulthood. With each moult they shed white skin, betraying their presence in the crop. 

Reproduction of the mottled arum aphid is entirely by parthenogenesis, with unfertilized viviparous females continuously producing new generations of females. There is no sexual stage in the life cycle.  

Wingless females of the mottled arum aphid are shiny whitish, yellowish or green with black cross bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can be highly variable. Adult females are 1.2-2.6 mm long. Immature Neomyzus circumflexus are usually the same background colour as their parents, but they lack the characteristic black markings.

How to get rid of Mottled arum aphid