Panonychus ulmi (Koch, 1836)

Naves, Pedro, Nóbrega, Filomena & Auger, Philippe, 2021, Updated and annotated review of Tetranychidae occurring in mainland Portugal, the Azores, and Madeira Archipelagos, Acarologia 61 (2), pp. 380-393 : 387-388

Panonychus ulmi (Koch, 1836)

The European red mite, P. ulmi , is widespread and abundant on mainland Portugal ( Carmona 1960 ; Carvalho 1971 ; Amaro 1980), on Madeira island ( Carmona 1973a ; Carmona and Dias

1996) and on the Azorean Islands of PIC and TER ( Borges et al. 2010).

It is considered the most important phytophagous mite on fruit orchards and a key-pest of apple (and occasionally pear) agrosystems in the mainland ( Amaro 1980 ; Carmona and

Dias 1980; Maltez and Carmona 1980 ; Sobreiro 1993 ; Espinha et al. 1999 ; Costa 2006) and the Azores (Lopes et al. 2009). Damage has also been reported on grapes ( Carmona 1973b ; Carmona and Dias 1980 ; Carmona and Ferreira 1989) and occasionally on beans ( Ferreira and Carmona 1994) and tomato ( Neves 2012), with up to nine ( Maltez 1994) or ten ( Sobreiro 1993)

annual generations possible. It is frequent in the INIAV acarological collection.