Species details

Callicera rufa Schummel, 1842


The larva occurs in rot-holes between bifurcating branches and in wet holes at the surface of stumps of Scots Pine Pinus sylvestris (and also Larch Larix sp., MacGowan, 1994). Adults are rarely encountered in the Scottish range, but seem to be more easily seen at the English sites. Usually either males basking in sunshine on truks or females searching for oviposition sites on pine trunks and stumps. Experiments have shown that rot-holes created artificially by cutting into pine trunks with a chain-saw are utilised readily and can be occupied within a few months.


Traditionally regarded as a species of the Caledonian pine forests across the Scottish Highlands although records extend south to the Perth area. This species has been the subject of detailed studies by the Malloch Society that have shown C. rufa to occur in the majority of locations in northern Scotland where ancient Scots Pine Pinus sylvestris occurs. Recent evidence suggests that this species has extended its range in response to new habitat created by felling of mature conifer plantations. Over the past decade or so it has become established at a growing number of locations across the south and midlands of England. It is not known whether this represents an expansion from the Scottish population or colonisation from the near Continent.


Lower Risk (Nationally scarce) - Ball & Morris, 2010. Rare (RDB3) - Falk, 1991. Endangered (RDB1) - Shirt, 1987.