A locations checked for presence of Ips amitinus in northern Sweden in 2016 – 2019. Red symbols = presence and blue symbols = absence. Green symbol = first record in 2012. 2016 = pentagon, 2017 = diamond, 2018 = triangle and 2019 = circle. Umeå (63°49.877'N, 20°15.651'E) B Ips amitinus southern distribution limit in 2017, 2018 and 2019 in northern Sweden. Localities are with (red symbols) and without (blue symbols) findings of I. amitinus in the surveys. Diamond symbols represent the 2017 survey, triangle – 2018 and circle - 2019 survey. Black horizontal lines denote the most southern location with I. amitinus for each year. The distance from the first find in 2012 (green circle in Fig. 1A) to the distribution limit in 2017 is 250 km.

 
 
  Part of: Cocos D, Klapwijk MJ, Schroeder M (2023) Tree species preference and impact on native species community by the bark beetle Ips amitinus in a recently invaded region. In: Jactel H, Orazio C, Robinet C, Douma JC, Santini A, Battisti A, Branco M, Seehausen L, Kenis M (Eds) Conceptual and technical innovations to better manage invasions of alien pests and pathogens in forests. NeoBiota 84: 349-367. https://doi.org/10.3897/neobiota.84.86586