Table 1. Number of grids cells positive for Ae. j. japonicus (number of ‘Mueckenatlas’ collection sites:number of submitted specimens are given in parentheses).

	2012		2013			2014			2015
	August	Total*	May	August	Total*	May	August	Total*	May	August	Total*
West Germany
‘Mueckenatlas’	7 (10:14)	21	---	8 (11:27)	31	---	9 (14:56)	52	---	8 (13:16)	89
field sampling	19		13	29		33	48		32	89
North Germany
‘Mueckenatlas’	---	---	---	1	12	---	1	10	---	2	8
field sampling	---	---	11	9		6	10		---	7

*As the same grid cells may have been positive in both collection periods per year and/or by both collection approaches, totals are less than sums.