| Croxley Common Moor | |
| Bordered on the North side by the river Gade and the Grand
Union canal, to the east by a business park, to the south a trading estate and the west the Metropolitan
tube line Croxley Common moor is an extensive area of grass heath, the turf supporting a rich number of
grassland flora no longer common in Britain due to increased drainage and agricultural change. The site is
another of our SSSIs and the majority is a registered Common. The land gently slopes downward from south to the
river where, at least at the western end, the drainage becomes poor and the grassland grades into marshy
areas with tall fen vegetation characterised by, amongst others, Reed Sweet grass (Glyceria). The wetter
areas are dominated by Rushes (Juncus spp.) and Sedges (Carex spp.). Scattered across the dryer
land are patches of Gorse Ulex), Broom(Cytisus) and Hawthorn (Crataegus). The site is
also made more interesting by the grazing of cattle during the summer months.
|
River Gade, East end |
Gade entrance gate |
Standing water, west end |
The bridge over the river Gade |
Gade shallows, East end |
Moor |
More moor |
Gorse |
| Species List | Comments | |
| Apionidae | ||
| Apion frumentarium | ||
| Apion haematodes | ||
| Aspidapion aeneum | ||
| Aspidapion radiolus | ||
| Ceratapion carduorum | ||
| Ceratapion onopordi | ||
| Exapion fuscirostre | ||
| Exapion ulicis | ||
| Malvapion malvae | ||
| Perapion curtirostre | ||
| Perapion hydrolapathi | ||
| Perapion marchicum | ||
| Perapion violaceum | ||
| Pirapion immune | ||
| Pseudapion rufirostre | ||
| Synapion ebeninum | ||
| Byrrhidae | ||
| Byrrhus pilula | ||
| Cantharidae | ||
| Cantharis cryptica | ||
| Cantharis pallida | ||
| Cantharis pellucida | ||
| Rhagonycha fulva | ||
| Rhagonycha limbata | ||
| Carabidae | ||
| Acupalpus dubius | ||
| Acupalpus exiguus | ||
| Acupalpus meridianus | ||
| Acupalpus parvulus | ||
| Agonum fuliginosum | ||
| Agonum viduum | ||
| Amara aenea | ||
| Amara bifrons | ||
| Amara communis | ||
| Amara convexior | ||
| Amara lunicollis | ||
| Amara plebeja | ||
| Bembidion articulatum | ||
| Bembidion biguttatum | ||
| Bembidion dentellum | ||
| Bembidion guttula | ||
| Bembidion lampros | ||
| Bembidion lunulatum | ||
| Bembidion obliquum | ||
| Bembidion tetracolum | ||
| Bradycellus verbasci | ||
| Calathus fuscipes | ||
| Calathus melanocephalus | ||
| Carabus granulatus | ||
| Elaphrus cupreus | ||
| Elaphrus riparius | ||
| Harpalus affinis | ||
| Harpalus rufipes | ||
| Loricera pilicornis | ||
| Nebria brevicollis | ||
| Notiophillus biguttatus | ||
| Notiophillus palustris | ||
| Notiophillus substriatus | ||
| Ocys harpaloides | ||
| Ophonus rufibarbis | ||
| Oxypselaphus obscurus | ||
| Paranchus albipes | ||
| Pterostichus diligens | ||
| Pterostichus madidus | ||
| Pterostichus nigrita | ||
| Pterostichus strenuus | ||
| Stenolophus mixtus | ||
| Cerambycidae | ||
| Grammoptera ruficornis | ||
| Rutpela maculata | Chrysomelidae | |
| Altica lythri | ||
| Apthona melancholica | ||
| Apthona nonstriata | ||
| Bruchidius cisti | ||
| Bruchidius villosus | ||
| Bruchus rufimanus | ||
| Bruchus loti | ||
| Cassida viridis | ||
| Chaetocnema concinna | ||
| Chrysolina herbacea | ||
| Chrysolina marginata | ||
| Chrysolina oricalcia | ||
| Crepidodera aurata | ||
| Crepidodera aurea | ||
| Cryptocephalus fulvus | ||
| Donacia semicuprea | ||
| Galeruca tanaceti | ||
| Galerucella calmariensis | ||
| Galerucella lineola | ||
| Galerucella nymphaeae | ||
| Galerucella sagittariae | ||
| Galerucella tenella | ||
| Gonioctena olivacea | ||
| Hermaeophaga mercurialis | ||
| Hippuriphila modeeri | ||
| Lochmaea crataegi | ||
| Longitarsus atricillus | ||
| Longitarsus jacobaeae | ||
| Longitarsus flavicornis | ||
| Mantura rustica | ||
| Neocrepidodera transversa | ||
| Phaedon armoraciae | ||
| Phyllotreta atra | ||
| Plagiodera versicolor | ||
| Plateumaris sericea | ||
| Podagrica fuscicornis | ||
| Prasocuris junci | ||
| Psylliodes affinis | ||
| Sphaeroderma rubidum | ||
| Sphaeroderma testaceum | ||
| Coccinellidae | ||
| Adalia bipunctata | ||
| Anisosticta novemdecimpunctata | ||
| Coccidula rufa | ||
| Coccinella septempunctata | ||
| Exochomus quadripustulatus | ||
| Halyzia sedecimguttata | ||
| Harmonia axyridis | ||
| Rhyzobius chrysomeloides | ||
| Rhyzobius litura | ||
| Subcoccinella vigintiquattuorpunctata | ||
| Tytthaspis sedecimpunctata | ||
| Curculionidae | ||
| Andrion regensteinensis | ||
| Anthonomus pedicularius | ||
| Anthonomus rubi | ||
| Barypeithes pellucidus | ||
| Ceutorhynchus atomus | ||
| Ceutorhynchus pallidactylus | ||
| Ceutorhynchus typhae | ||
| Cionus tuberculosis | ||
| Curculio venosus | ||
| Datonychus melanostictus | ||
| Dorytomus dejeani | Notable B | |
| Euophryum confine | ||
| Gymnetron villosulum | Notable B | |
| Hylastinus obscurus | ||
| Hypera nigrirostris | ||
| Hypera plantaginis | ||
| Leiosoma deflexum | ||
| Mecinus pascuorum | ||
| Mecinus pyraster | ||
| Otiorhyncus ovatus | ||
| Phyllobius argentatus | ||
| Phyllobius pomaceus | ||
| Phyllobius pyri | ||
| Phyllobius roboretanus | ||
| Phyllobius viridiaenus | ||
| Polydrusus cervinus | ||
| Rhinoncus pericarpius | ||
| Sciaphilus asperatus | ||
| Sitona hispidulus | ||
| Sitona humeralis | ||
| Sitona lepidus | ||
| Sitona lineatus | ||
| Sitona striatellus | ||
| Strophosoma melanogrammum | ||
| Tychius picirostris | ||
| Dermestidae | ||
| Dermestes haemorrhoidalis | ||
| Dryopidae | ||
| Dryops ernesti | ||
| Elateridae | ||
| Agriotes acuminatus | ||
| Agriotes lineatus | ||
| Agriotes obscurus | ||
| Agriotes sputator | ||
| Agrypnus murinus | ||
| Athous haemorrhoidalis | ||
| Denticollis linearis | ||
| Kibunea minuta | ||
| Prosternon tessellatum | ||
| Erirhinidae | ||
| Grypus equiseti | ||
| Erotylidae | ||
| Dacne bipustulata | ||
| Geotrupidae | ||
| Geotrupes spiniger | ||
| Geotrupes stercorarius | ||
| Heteroceridae | ||
| Heterocerus fenestratus | ||
| Histeridae | ||
| Hister unicolor | ||
| Margarinotus striola | ||
| Margarinotus ventralis | ||
| Hydrophilidae | ||
| Cercyon haemorrhoidalis | ||
| Cercyon impressus | ||
| Cercyon lateralis | ||
| Cercyon melanocephalus | ||
| Cercyon obsoletus | ||
| Cercyon pygmaeus | ||
| Cercyon quisquilius | ||
| Cercyon unipunctatus | ||
| Cryptopleurum minutum | ||
| Hydrobius fuscipes | ||
| Sphaeridium bipustulatus | ||
| Sphaeridium lunatum | ||
| Sphaeridium scarabaeoides | ||
| Kateretidae | ||
| Kateretes pusillus | ||
| Lampyridae | ||
| Lampyris noctiluca | ||
| Leiodidae | ||
| Ptomaphagus subvillosus | ||
| Malachiidae | ||
| Malachius bipustulatus | ||
| Monotomidae | ||
| Monotoma brevicollis | ||
| Nanophyidae | ||
| Nanophyes marmoratus | ||
| Oedemeridae | ||
| Oedemera lurida | ||
| Oedemera nobilis | ||
| Pyrochroidae | ||
| Pyrochroa serraticornis | ||
| Rhynchitidae | ||
| Tatianaerhynchites aequatus | ||
| Scarabaeidae | ||
| Aphodius contaminatus | ||
| Aphodius erraticus | ||
| Aphodius fimetarius | ||
| Aphodius foetens | ||
| Aphodius fossor | ||
| Aphodius granarius | ||
| Aphodius haemorrhoidalis | ||
| Aphodius prodromus | ||
| Aphodius rufipes | ||
| Aphodius rufus | ||
| Aphodius sphacelatus | ||
| Aphodius sticticus | ||
| Onthophagus coenobita | ||
| Serica brunnea | ||
| Scirtidae | ||
| Microcara testacea | ||
| Silphidae | ||
| Nicrophorus vespillo | ||
| Staphylinidae | ||
| Aleochara intricata | ||
| Aleochara lanuginosa | ||
| Anotylus complanatus | ||
| Anotylus inustus | ||
| Anotylus rugosus | ||
| Anotylus tetracarinatus | ||
| Autalia rivularis | ||
| Carpelimus bilineatus | ||
| Cilea silphoides | ||
| Coprothassa melanaria | ||
| Gyrohypnus angustatus | ||
| Hygronoma dimidiata | ||
| Megarthrus denticollis | ||
| Megarthrus prosseni | ||
| Omalium rivulare | ||
| Ontholestes murinus | ||
| Oxytelus laqueatus | ||
| Paederus riparius | ||
| Phacophallus parumpunctatus | ||
| Philonthus albipes | ||
| Philonthus cruentatus | ||
| Philonthus intermedius | ||
| Philonthus quisquillarius | ||
| Philonthus splendens | ||
| Philonthus varians | ||
| Platydracus stercorarius | ||
| Platystethus arenarius | ||
| Quedius fuliginosus | ||
| Scaphisoma agaricinium | ||
| Scaphisoma boleti | ||
| Stenus aceris | ||
| Stenus flavicornis | ||
| Stenus juno | ||
| Stenus melanarius | ||
| Stenus pallitarsis | ||
| Stenus solutus | ||
| Tachyporus hypnorum | ||
| Xantholinus linearis | ||
| Tenebrionidae | ||
| Isomira murina | ||