Four wild bees adorn the latest issue of self-adhesive definitive
stamps. Around 550 species of the superfamily Apoidea - with the
exception of the honey bee - are grouped under the term wild bees. Even
if the name suggests it, wild bees are by no means wild archetypes or
feral strains of the honey bee.
The "Large Scabious Mining Bee"
(face value: CHF 0.90) can be seen from June to August. The pink pollen
on its hind legs is conspicuous, as it gathers its food exclusively on
field scabiosas. One of the largest bees in the Liechtenstein region is
the "Carpenter Bee" (face value: CHF 1.10). It can grow up to three
centimetres long. Its pure black body and blue-black wings make it easy
to spot in the field.
The habitat of the "Mountain Bumblebee"
(face value: CHF 1.80) is in sparse woods in the high mountains. This
northern, hardy species, which is resistant to the cold, can be
recognised by its yellow-black-orange rump. Unlike the other wild bee
species, the "Cuckoo Bee" (face value: CHF 2.30) does not look after its
brood and therefore does not need a collecting device for pollen. It
lays its eggs in the nest of a Macropis bee like a cuckoo.