Crustacea: Copepoda - Cerambycoidea.com

Chrysogona gracillima (Foerster) - RDB2. A parasitoid of larvae of other aculeates; host(s)
probably need deadwood for nesting; heaths, downs & hedgerows in south-east
England.
Chrysura radians (Harris)- Nationally Scarce A. A parasitoid of Osmia bees, specialising in
species such as O. leaiana, which nest in dead wood; open sunny situations.
Widespread across lowland England.
Trichrysis cyanea (Linnaeus) - A parasitic on various wood-boring aculeates.
Omalus aeneus (Fabricius) – A brood parasite of stem and wood-nesting Sphecid wasps of
the sub-family Pemphredoninae. Widespread across lowland Britain.
Omalus puncticollis (Mocsary) - Nationally Scarce A. Probably a parasitoid of larvae of
small deadwood-nesting sphecid wasps such as Passaloecus and Pemphredon; usually
found in wooded situations.
Omalus truncatus Dahlbom - RDB1. Probably a parasitoid of larvae of small deadwood or
stem-nesting sphecid wasps.
Omalus violaceus (Scopoli) - Nationally Scarce B. A parasitoid of larvae of small sphecid
wasps, with rearing records for Pemphredon lugubris and Passaloecus corniger nests,
both in dead wood and in Lipara galls on Phragmites; occurs in a wide variety of
situations where dead wood available.
Sapygidae
Sapyga clavicornis (Linnaeus) - Nationally Scarce B. A brood parasite of megachilid bees of
the genus Chelostoma and Osmia, which nest in dead wood usually at heights of 5-
10m, and usually in situations fully exposed to the sun. Widespread in lowland
southern Britain.
Sapyga quinquepunctata (Fab.) - Widespread across southern Britain. Its host bees – Osmia
and Chelostoma spp. - nest in a wide range of cavities including dead wood.
Formicidae - 10km square maps, BRC 1979
Leptothorax acervorum (Fabricius) - Nests in tree stumps and under bark of deadwood in the
south, but is more usually found under stones, in peat or partly buried twigs in the
north & west.
Leptothorax nylanderi (Forster) - Forms small colonies under bark on deadwood or in tree
stumps; local; inland in S England from Devon to Shropshire.
Lasius brunneus (Latreille) - Brown Tree Ant. Nationally Scarce B. Fugitive tree-dwelling
species, typically nesting in heartwood of old oak Quercus trees in parkland, also
occasionally in open woodland and hedgerows, and also in other broadleaves;
frequent in old orchard trees through the Severn Vale; workers tend aphids which are
feeding on the tree; a very localised distribution in central southern England.
Lasius fuliginosus (Latreille) - Forms populous colonies in old trees, stumps, hedges, old
walls and in sand dunes; nest is of carton, macerated wood hardened by secretions
from the mandibular glands.
Lasius umbratus (Nylander) - Nests in the base of old trees, in partly buried logs, stumps,
and also under boulders.
Pompilidae - Spider Wasps. None appear to be particularly closely associated with
decaying wood. The following four species are the most likely to be found.
Dipogon bifasciatus (Geoffroy) - RDB3. Often found running in and around decaying
stumps; nests in vacated insect borings in dead wood as well as cavities in walls;
partitions are constructed of wood particles; preys on crab spiders (Thomisidae).
Southern & eastern England, particularly from wooded downland.
Dipogon subintermedius (Magretti) - A cavity-nesting species, using flight holes in
deadwood and even hard bracket fungi, as well as bramble stems and walls,
84