Crustacea: Copepoda - Cerambycoidea.com

provisioning with the spider Segestria senoculata; a speciality of mature timber and
old hedgerows.
Dipogon variegatus (Linnaeus) - Will nest in almost any cavity, including borings in timber,
walls & snail shells.
Auplopus carbonarius (Scopoli) - Nationally Scarce B. Constructs cells in sheltered
situations such as beneath stones or in hollow tree trunks; preys on a wide range of
free-living spiders.
Eumenidae - Symmorphus and some Ancistrocerus nest in tubes, usually selecting hollow
plant stems, such as bramble Rubus, elder Sambucus and even the straws of thatched
roofs. Many other kinds of crevices are also used, including holes in dead wood, tree
trunks and fence posts.
Microdynerus exilis (Herrich-Schaffer) - Nationally Scarce B. Nests in small beetle holes in
wood, and very occasionally in bramble Rubus stems; nest stocked with weevil larvae.
Southern and eastern England, first reported in 1937.
Symmorphus bifasciatus Linnaeus* - Often nests in dead wood, as well as plant stems and
crevices in old walls. Damp habitats, often near streams. Widespread.
Symmorphus connexus (Curtis) - Red Data Book Category 3 (Rare). Often nests in dead
wood, as well as plant stems and crevices in old walls. Damp habitats, often near
streams. Rare and increasingly so; south-east and eastern England.
Symmorphus crassicornis (Panzer) - Red Data Book Category 3 (Rare). Often nests in dead
wood, as well as plant stems and crevices in old walls. Damp habitats, often near
streams. Southern Britain.
Symmorphus gracilis (Brulle) - Probably nests in holes in wood. Damp habitats, often near
streams; preys on larvae of the beetles Chrysolina populi and Cionus hortulanus;
adults at Scrophularia flowers. Widespread across the lowlands of England and
Wales.
Vespidae
Vespa crabro Linnaeus - The Hornet. Nests usually in hollow trees, less often in buildings;
feed on nectar, fruit, honey, and various insects.
Sphecidae
Crossocerus annulipes (Lepeletier & Brulle) - Nest usually in rotten wood; preys on
Homoptera.
Crossocerus binotatus Lepeletier & Brulle - Nationally Scarce B. Nest in hard dead wood in
a wide variety of situations, including logs, old stumps, fence posts and building
timbers, in woods, parks, wetlands, farmland and gardens; preys on medium-sized
flies such as Rhagio and lauxaniids. Very widespread over England & Wales,
although very sparingly; only one Scottish record, in Dumbartonshire (1903). Never
known as a common insect, but no real evidence of any decline.
Crossocerus cetratus (Shuckard)
Crossocerus dimidiatus (Fabricius)* - Nest in cavities such as those in rotten wood or soft
mortar in walls; preys on Diptera, particularly snipe flies Rhagio in Britain.
Widespread in Britain & Ireland, and most frequent in Britain in the north and west -
a northern European species.
Crossocerus distinguendus (Morawitz, A.) – First found in GB in 1979 in Kent, and now
well-distributed over south-east and was first found in Yorkshire in 2000. Normally
nests in ground, but may also nest in holes in dead wood.
Crossocerus leucostoma (Linnaeus) - Nationally Scarce A. Nest in deadwood in warm
sunny situations, often using the abandoned larval tunnels of scolytid beetles; preys
on small Diptera such as simuliids. A northern, conifer associate, formerly mainly
native pine Pinus woods but now more widespread through plantations.
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