Crustacea: Copepoda - Cerambycoidea.com

Ectemnius sexcinctus (Fabricius) - Nationally Scarce B. Nest in beetle burrows in tree
stumps, fence posts, building timbers, exposed wood-decay in living trees and rotten
wood generally; cells stocked with medium-sized flies such as calypterates and
hoverflies. Southern half of Britain.
Rhopalum clavipes (L.)* - A common and widespread cavity nesting species, favouring dead
wood, stems and old mortar. Preys on Psocoptera and occasionally certain Diptera or
Hemiptera.
Mimumesa dahlbomi (Wesmael)* - Nest in beetle holes in dead wood; preys on delphacids
and cicadellids (Homoptera). Widespread across the lowlands of southern Britain; one
record from Ireland.
Stigmus pendulus – First recorded in Britain only in 1986, at Smarden, Kent. Well-distributed
in south-east England.
Stigmus solskyi Morawitz, A. – Fairly common and widespread. Nests in small old beetle
holes in dead wood.
Pemphredon inornatus Say* - A common cavity nesting species over much of England,
Wales and Ireland, extending into southern Scotland.
Pemphredon lugubris (Fabricius)* - Nest in rotten wood; prey aphids.
Pemphredon morio Van der Linden - Nationally Scarce B. Nest in decaying wood in warm
sunny situations; prey aphids. Widespread in lowland England.
Pemphredon wesmaeli (Morawitz, A.) - RDB3. Nest in hard wood or bark of dead pine Pinus
timber in native pine woodland; prey aphids.
Passaloecus are small black wasps which nest particularly in beetle borings in posts and other
cavities, and prey on aphids.
Passaloecus corniger Shuckard - Nests in wooden posts or old timber containing nests of
other Passaloecus wasps; steals aphid prey from other Passaloecus or Psenulus
pallipes wasps. Widespread. Occasionally found in reedbeds where nests in Lipara
galls on common reed Phragmites.
Passaloecus eremita Kohl – Discovered as recently as 1978 in West Sussex, but now known
to be locally common in south-east England and found as far north as Warwickshire
and Norfolk. Nest constructed in old beetle holes in pine Pinus and other trees, fence
posts and other dead wood – the hole is plugged with pine resin.
Passaloecus gracilis (Curtis) - Nest in beetle burrows or burrows of tortricid moth
Rhyaciona; also in dry hollow plant stems; prey aphids. In a wide variety of habitats,
including suburban gardens. Widespread in England, although most frequent in south.
Passaloecus insignis (Van der Linden) - Nests constructed in old beetle burrows in decayed
wood or in stems with the pith excavated; prey upon aphids; in a variety of open
ruderal habitats. Widespread in southern Britain although not common.
Passaloecus monilicornis Dahlbom - Nests in abandoned beetle burrows in deadwood, which
are cleaned of wood dust and frass; prey aphids. A northern species.
Passaloecus singularis Dahlbom - Nests in pithy stems or abandoned beetle borings in dead
wood, even occasionally in old Lipara galls on reed Phragmites stems; prey aphids;
common and widespread, although scarcer in west.
Passaloecus turionum Dahlbom – ?RDB. English specimens dating back to 1924 but only
recently published. Has been reared from nests in old beetle holes in dead pine Pinus
bark at Ambersham Common, West Sussex, and may use resins in nest construction;
mainly known from pine and heathland localities in Kent, Surrey and Sussex. Thought
to be boreo-alpine in Europe.
Spilomena troglodytes (Van der Linden) - Nest in holes in wood; prey thrips nymphs.
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