Andrena haemorrhoa (Orange-tailed Mining Bee)
This is one of a small group of Andrena species with the top of the propodeum strongly rugose. Females average a little smaller than a Honey Bee and when fresh are very distinctive with a neat reddish pile on top of the thorax, a dull, slaty-black abdomen that is almost bare except for bright orange hairs at the tip, and yellow hind tibiae and tarsi. Very worn females can be encountered at the end of the flight period and can often appear very dark due to the loss of body hairs.

Males have a rich-brown pile on top of the thorax and buff-brown hairs at the tip of the blackish abdomen. The hind tibiae and tarsi are usually mainly yellow.

This is a widespread and locally common species (scarcer in the north) which can occur in a wide variety of habitats. It flies from late March into July and visits a wide variety of flowers, especially spring-blossoming shrubs, dandelions and umbellifers. Nesting occurs in dispersed aggregations in light soils, especially south-facing slopes and banks. Males often swarm around flowering Gorse and other small shrubs.

It is attacked by the Fork-jawed Nomad Bee Nomada ruficornis.

BWARS account:
www.bwars.com/index.php?q=bee/andrenidae/andrena-haemorrhoa
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