During a pitfall sampling in the winter of 2014-2015 in some heathland relicts near Bruges, Boreus hyemalis (Linnaeus, 1767) was recorded at three sites. These are the first records of this species for the Province West Flanders. Formerly, this species was only known in Flanders from large and spacious heathlands and shifting sand dunes. As an adult, Boreus hyemalis is only active during the coldest period of the year, even when soils are covered with snow and ice. Probably this species is more common than so far assumed, but because during winter entomological surveys are very rare, this species has probably been overlooked at several places. We give an up-date of its current observed distribution in Belgium and we discuss the recent observations in the western part of Belgium.
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