Crustacea: Copepoda - Cerambycoidea.com

Eupachygaster tarsalis (Zetterstedt) – Scarce Black. Nationally Scarce. Larvae in very small
rot-holes, especially those high up in trees, either where branches have broken off a
trunk or at the edge of where a piece of bark is missing from a trunk; in beech, birch,
ash, pine, elm and poplar. Possibly a relict old forest species in Britain.
Neopachygaster meromelas (Dufour) – Silver-strips Black. Nationally Scarce. The flattened
greyish larvae can be frequent in the moist detritus beneath loose bark on dead poplar;
also willow, holly, horse chestnut, elm, etc; and in beetle tunnels. Feed on the detritus.
Widely across English lowlands.
Pachygaster atra (Panzer)* - Dark-winged Black. Although larvae are regularly to be found
amongst debris beneath loose bark on decaying timber, they appear to be generalist
detritivores rather than specialist saproxylics, and are also found in decaying
vegetation in other situations. Widespread across English lowlands but rarer in north.
Pachygaster leachii Stephens in Curtis* - Yellow-legged Black. Although larvae are
regularly to be found beneath loose bark on decaying timber, especially oak, like P.
atra they appear to be generalist detritivores rather than specialist saproxylics.
Widespread across southern England.
Zabrachia tenella (Jaennicke)* = minutissima misident. – Pine Black. Nationally Scarce.
Larvae in wood detritus in galleries of bark beetles under loose bark of dead pines,
also fir, larch, birch; widespread.
Therevidae - Stiletto Flies
Pandivirilia melaleuca (Loew) – Forest Silver-stiletto. RDB1. Larvae in very dry powdery
red-rotten heartwood of oak and in decaying heartwood of ash, often devoid of other
living macro-organisms; wide scatter of reports across southern Britain (although
confirmation through rearing only from Windsor), but always ancient wood pastures.
Thereva nobilitata (Fabricius)* - Common Stiletto. Has been reared from decaying
heartwood and wood mould in hollow ashes, where the larvae occur with Prionychus
beetle larvae on which they probably prey. Also develops in a wide range of other
situations. Widespread.
Scenopinidae – In the wild, the natural habitat of windowflies is probably old timber,
including bird nests in tree cavities and in the decaying wood itself. Some species
have become synanthropic and occur within buildings.
Scenopinus niger (De Geer)* - Forest Windowfly. Nationally Scarce. Larvae predatory on
dermestid and probably other beetle larvae in dry red-rotting heartwood of various
broad-leaved trees in ancient wood pastures; also found under bark and in dry rot
holes of elm and beech.
Asilidae - Sub-family Laphriinae develop as predators in decaying wood.
Choerades gilvus (Linnaeus) – Ginger Robberfly. RDBK. Larvae feed on the larvae and
pupae of saproxylic weevils and longhorn beetles within pine timber; adults are active
hunters, preying upon a wide variety of insects. Established in south-eastern England
on pine-covered heaths.
Choerades marginatus (Linnaeus) – Golden-haired Robberfly. Nationally Scarce. In ancient
oak woods and wood pastures of C and S England. The larvae have been reported
from beetle burrows in decaying oak branches, while the adults hunt a wide variety of
insects.
Laphria flava (Linnaeus) – Bumblebee Robberfly. RDB3. Develops in massive deadwood of
Scots pine, where feeds on longhorn beetle larvae; also reported from spruce and
birch on Continent. Ancient Caledonian pine forests.
Empids - Dance Flies. A large grouping of flies with inadequate knowledge of life
histories; most adults are predators of other insects and this is probably also the case
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