Fig 1.
Map showing the geographic locations of the four known Ae. j. japonicus populations in Germany (population encircled in green was neither detected nor studied by the authors; for population encircled in red see [15]).
Insets mark the two populations/areas surveyed.
Fig 2.
Area of West Germany in the federal states of North Rhine-Westphalia, Rhineland-Palatinate and Hesse checked for Ae. j. japonicus in 2012 (a), 2013 (b), 2014 (c) and 2015 (d). Red squares: grid cells positive, green squares: grid cells negative by cemetery inspection, circles: grid cells with Ae. j. japonicus submissions to the ‘Mueckenatlas’; figures in the grid cells denote findings in May/August of the respective year with ‘1’, ‘2’, ‘3’ representing the number of cemeteries inspected until Ae. j. japonicus was found, ‘X’ representing three negative cemeteries in case only one of the two collection seasons was positive, and ‘-‘ meaning not sampled. The area framed in bold marks the reference area used for statistical analysis.
Table 1.
Number of grids cells positive for Ae. j. japonicus (number of ‘Mueckenatlas’ collection sites:number of submitted specimens are given in parentheses).
Fig 3.
Area of North Germany in the federal states of North Rhine-Westphalia and Lower Saxony checked for Ae. j. japonicus in 2013 (a), 2014 (b) and 2015 (c). Red squares: grid cells positive, green squares: grid cells negative by cemetery inspection, circles: grid cells with Ae. j. japonicus submissions to the ‘Mueckenatlas’; figures in the grid cells denote findings in May/August with ‘1’, ‘2’, ‘3’ representing the number of cemeteries inspected until Ae. j. japonicus was found, ‘X’ representing three negative cemeteries in case only one of the two collection seasons was positive, and ‘-‘ meaning not sampled. The area framed in bold marks the reference area used for statistical analysis.