First report of Nemorimyza maculosa in Madeira (PT) and Canary Islands (ES)
During a faunistic study on Agromyzidae, the presence of Nemorimyza maculosa (Diptera: Agromyzidae – EPPO A1 List) was reported for the first time in the EPPO region (Černý et al., 2018), on the islands of Madeira (Portugal) and La Palma (Canary Islands, Spain). The NPPOs of Portugal and Spain have confirmed these findings and provided additional information.
- Madeira (PT)
In April 2016, 14 male specimens of N. maculosa were collected from the island of Madeira during a faunistic study. In January 2020, the NPPO of Portugal confirmed that
N. maculosa is present in Madeira where it is under containment. Since 2017, an official survey has been implemented in the mainland and in the Azores and confirmed the absence of the pest from the rest of the Portuguese territory.
The situation of Nemorimyza maculosa in Portugal can be described as follows: Present, only in Madeira (absent from the mainland).
- Canary Islands (ES)
In January 2011, 7 specimens (2 males, 5 females) of N. maculosa were collected in 3 different areas of the island of La Palma. In February 2020, the NPPO of Spain confirmed that the pest has been detected in the islands of Tenerife, Gran Canaria, La Palma and La Gomera, but is absent from the mainland. In the Canary Islands, N. maculosa has mainly been found on Lactuca sativa (lettuce), but has also been detected on Helianthus annuus (sunflower) and several weed species, such as Bidens pilosa and Erigeron (=Conyza) bonariensis.
The pest status of Nemorimyza maculosa in Spain is officially declared as: Present, restricted distribution (Canary Islands); Absent (mainland).
Sources
Černý M, Andrade R, Gonçalves AR, von Tschirnhaus M (2018) New records of Agromyzidae (Diptera) from Portugal, with an updated checklist. Acta Musei Silesiae, Scientiae Naturales 67, 7-57.
NPPO of Portugal (2020-01).
NPPO of Spain (2020-02).