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; Asplenium nidus; Buxus sempervirens; Cistus; Euonymus europaeus, fortunei, japonicus, latifolius; Laurus nobilis; Pachysandra; Phoenix canariensis.

Euonymus japonicus is the most important host plant by far.

synonyms

Chionaspis evonymi.

notes

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

references

Blay Goicoechea (1992a), Braggion (2013a), Çalişkan Keçe & Ulusoy (2017a), Carnero Hernandez & Perez Guerra (1986a), Fetykó (2014a), Hellrigl (2004a), Jansen (2009a), Kozár, Guignard, Bachmann ao (1994a), Kozár, Konczné Benedicty, Fetykó, ao (2013a), Kozár, Paloukis & Papadopoulos (1991a), Malumphy (2010a, 2016a), Malumphy & Kahrer (2011a), Mifsud, Mazzeo, Russo & Watson (2014a), Pellizzari, Porcelli, Seljak & Kozár (2011a), Redfern & Shirley (2011a), Roques, Cleary, Matsiakh & Eschem (2017a), Salisbury, Malumphy & Halstead (2013a), Seljak (2010a), Trencheva, Trenchev, Tomov, ao (2012a), Özyurt & Ülgentürk (2007a).