Unaspis euonymi (Comstock, 1881)

euonymus scale

mainly on Euonymus, etc.

Euonymus europaeus, Belgium, prov. Namur, Namur, Mundo, 16.vi.2018 © Stéphane Claerebout: severe infestation

detail

Euonymus europaeus, Hungary, Mosonmagyaróvár © László Érsek

male scale

a single specimen

a female scale

a still mobile larva (“crawler”)

Euonymus europaeus, France, dép. Nord, Zuydcote © Sébastien Carbonnelle

male specimens

parasiet

Female scales are relatively larve, dull-brown and cup-shaped; the sit mainly on the branches. Males are much smaller and occur mainly at the underside of leaves; they are covered by an elongated white shield that his three length-ridges.

host plants

Celastraceae etc., polyphagous

Aspidistra elatior; Cistus; Euonymus europaeus, japonicus, latifolius; Laurus nobilis; Pachysandra; Phoenix canariensis.

Euonymus japonicus is the most important host plant by far.

notes

Native in SE Asia; currently a pest species in North America, and an invasive in Europe.

references

Blay Goicoechea (1992a), Braggion (2013a), Fetykó (2014a), Hellrigl (2004a), Jansen (2009a), Kozár, Guignard, Bachmann ao (1994a), Malumphy (2010a, 2016a), Malumphy & Kahrer (2011a), Mifsud, Mazzeo, Russo & Watson (2014a), Pellizzari, Porcelli, Seljak & Kozár (2011a), Redfern & Shirley (2011a), Salisbury, Malumphy & Halstead (2013a), Seljak (2010a), Özyurt & Ülgentürk (2007a).