This hoverfly is thought to have declined; until very recently it was found in 7 sites (2) but it is now restricted to just two locations in north-east Scotland (4).In Europe, where this species is found in mountainous areas, it is declining and thought to be under threat (2).
At both of the current sites supporting this species, there are very few suitable pine stumps with rot holes (4). This species is also threatened by unsuitable woodland management, and possibly by over-collection by entomologists(2).
This species is a priority species under the UK Biodiversity Action Plan (UK BAP) (2). The RSPB has taken on the role of ‘lead partner’ for this and another rare hoverfly, the aspen hoverfly (Hammerschmidtia ferruginea) since they were found on RSPB-owned sites. With Scottish Natural Heritage, they are funding a programme of work on these species, carried out by the Malloch Society (4). For details of this work please follow the link below.
In arthropods (crustaceans, insects and arachnids) the abdomen is the hind region of the body, which is usually segmented to a degree (but not visibly in most spiders). In crustacea (e.g. crabs) some of the limbs attach to the abdomen; in insects the limbs are attached to the thorax (the part of the body nearest to the head) and not the abdomen. In vertebrates the abdomen is the part of the body that contains the internal organs (except the heart and lungs).
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