Unaspis euonymi (Comstock, 1881)

euonymus scale

mainly on Euonymus

Unaspis euonymi on Euonymus europaeus

Euonymus europaeus, Hungary, Mosonmagyaróvár © László Érsek

Unaspis euonymi: male scales on Euonymus europaeus

male scale

Unaspis euonymi: male scale on Euonymus europaeus

a single specimen

Unaspis euonymi: female scale on Euonymus europaeus

a female scale

Unaspis euonymi: crawler

a still mobile larva (“crawler”)

Unaspis euonymi: galls on Euonymus europaeus

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

Unaspis euonymi: males on Euonymus europaeus

male specimens


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 en elongated white shield that his three length-ridges.


Buxaceae, Celastraceae etc., polyphagous

Aspidistra elatior; Euonymus europaeus, japonicus; Pachysandra.

Also, but much less frequently, on other woody plants; Euonymus japonicus is the most important host plant by far.


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


Braggion (2013a), Hellrigl (2004a), Jansen (2009a), Malumphy (2010a, 2016a), Mifsud, Mazzeo, Russo & Watson (2014a), Redfern & Shirley (2011a), Salisbury, Malumphy & Halstead (2013a), Özyurt & Ülgentürk (2007a).

mod 25.iv.2018