number of species:
on Red List:
March till October
1 species (11%)
Colletes cunicularius (m)
© photo: Huib Koel
|Description:The genus Colletes (or plasterer bees, in Dutch "silk bees") is a very large group
of ground-nesting bees within the bee family Colletidae, with over 450 species worldwide, primarily in the Northern Hemisphere, with nine species in The Netherlands and Flanders.
These bees tend to be solitary, though sometimes nest close together in so-called aggregations.
Species in the genus build cells in underground nests that are lined with a polyester secretion, earning them the nickname polyester bees.
Most Colletes are found in July and August. The Grote zijdebij (Great plasterer bee), Colletes cunicularius, flies during March and April. The Klimopzijdebij (Ivy plasterer bee) can be found
Colletes impunctatus is on the Dutch Red List (RL).