Wednesday, 2 April 2025
A Coincidence
Tuesday, 1 April 2025
The Sand Dwellers
Any patch of sand in a sunny spot is likely to have residents, especially if it is near a patch of willow. At this time of year, look out for solitary bees, which ironically, may form large colonies in suitable sandy habitats. You may spot these three species in particular:
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Grey-backed Mining Bee nest. |
Grey-backed Mining Bee Andrena vaga -- a large shining black mining bee with lots of buffy grey 'fur' on the thorax. Abundant and specialising in willow, collecting the bright yellow pollen to store away in its nest hole to feed its larvae.
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Female Grey-backed Mining Bees, with and without pollen loads. |
Vernal Colletes bee Colletes cunicularius -- a large dark brown bee with dense tawny 'fur' on the thorax. They produce a waterproofing substance from a gland in their abdomen that they smear on the inside of the underground brood cells that they dig. Colletes can be identified by a distinctive S shaped vein on their wing.
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Vernal Colletes. |
Lathbury's Nomad Bee Nomada lathuriana -- a parasite of Grey-backed Mining Bees. They have a three coloured abdomen and tawny hairs on the abdomen. The nomad bee lays its egg in the nest of the mining bee and its larvae hatch first. They then eat the mining bee egg and its stock of pollen.
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Lathbury's Nomad Bee. |
All photographed in early April 2023 in the same few metres of compacted sandy soil on the island in the Loire at Amboise.