Species and family descriptions
These pages attempt to provide some basic knowledge of the species featured. We make no apology for covering well worked ground because we want the site to be of use to beginners as well as experienced coleopterists. Families are introduced with a brief description allowing the user to place a specimen with confidence, we have tried to keep these simple and to this end our series of featured species are pictured. Within these descriptions links are included enabling closely similar families to be separated. Of course this is no substitute for a comprehensive key but we hope that by going through these series others will be able to place the great majority of frequently encountered species. Our pictures have been chosen and presented in such a way as to allow, along with some guidance, a correct ID should the species concerned be found. A description is provided so that the important features will not be overlooked when comparing your specimen to our pictures; these descriptions have been written by taking the diagnostic features from a range of keys and with our own specimens before us i.e. none of our descriptions rely solely on the literature. Our only misgiving being that our descriptions are based purely on local material, where regional variation is known this has been noted. We can thus leave others safe in the knowledge that their specimen, so far as we know, is what we say it is rather than something closely similar.

Some similar species are best identified by having examples of both together for comparison, with some the underside may need to be examined while others (quite a few) will need to be dissected. We often use these methods and some of our more critical work is given in the ID Aids section.

Collecting for its own sake is quite rightly to be frowned upon, on the other hand a collection of correctly identified specimens becomes valuable, in the scientific sense, if the data are submitted to the various recording schemes and the specimens are preserved and, ultimately, donated to a museum. It must also be realised that the British checklist is dynamic; new species find their way into the UK and , following modern research, established species may ‘split’ into two or more species. Thus without well preserved reference material many historical records may lose much of their value. e.g. Pterostichus nigrita (PK) and Pterostichus rheaticus Heer.

Almost all the species on our website were recorded from the Watford area, however, we will feature species recorded from elsewhere, on the species page this will be indicated by a light blue banner rather than our signature gold.

All the specimens pictured on the following pages have been identified by the WCG, that is to say that from whatever source the specimens originated, unless otherwise stated, they have been verified by Mr. D.Hodges and/or Mr. D.Murray.
Aderidae
Alexiidae
Anthicidae
Anthribidae
Apionidae
Attelabidae
Biphyllidae
Bothrideridae
Buprestidae
Byrrhidae
Byturidae
Cantharidae











Carabidae
 Family Overview
Subfamily Cicindelinae
 Cicindela campestris Linnaeus
 Cylindera germanica (Linnaeus)
Subfamily Carabinae
Tribe Carabini
 Carabus granulatus Linnaeus
 Carabus nemoralis Muller
 Carabus problematicus Herbst
 Carabus violaceus Linnaeus
Tribe Cychrini
 Cychrus caraboides (Linnaeus)
Tribe Nebriini
 Leistus fulvibarbis Dejean
 Leistus spinibarbis (Fabricius)
 Nebria brevicollis (Fabricius)
 Nebria salina Fairmaire & Lab.
Tribe Notiophilini
 Notiophilus aesthuans Motschulsky
 Notiophilus aquaticus (Linnaeus)
 Notiophilus biguttatus (Fabricius)
 Notiophilus germinyi Fauvel
 Notiophilus palustris Curtis
 Notiophilus quadripunctatus Dejean
 Notiophilus rufipes Curtis
 Notiophilus substriatus Waterhouse
Tribe Elaphrini
 Elaphrus cupreus Duftschmid
 Elaphrus lapponicus Gyllenhal
 Elaphrus riparius Linnaeus
 Elaphrus uliginosus Fabricius
Tribe Loricerini
 Loricera pilicornis (Fabricius)
Tribe Scaratini
 Clivina fossor (Linnaeus)
Tribe Trechini
 Trechus quadristriatus (Schrank)
Tribe Bembidiini
 Asaphidion curtum (Heyden)
 Bembidion articulatum Panzer
 Bembidion biguttatum (Fabricius)
 Bembidion bruxellense Wesmael
 Bembidion dentellum (Thunberg)
 Bembidion doris (Panzer)
 Bembidion guttula (Fabricius)
 Bembidion obtusum Audinet-Serville
 Bembidion lampros (Herbst)
 Bembidion lunulatum (Geoffroy)
 Bembidion quadrimaculatum (Linnaeus)
 Bembidion tetracolum Say
 Bembidion varium (Olivier)
 Ocys harpaloides (Audinet)
Tribe Patrobini
 Patrobus atrorufus (Stroem)
Tribe Pterostichini
 Abax parallelepipedus (Pil. & Mit.)
 Poecilus cupreus (Linnaeus)
 Poecilus versicolor (Sturm)
 Pterostichus cristatus (Dufour)
 Pterostichus madidus (Fabricius)
 Pterostichus melanarius (Illiger)
 Pterostichus minor (Gyllenhal)
 Pterostichus niger (Schaller)
 Pterostichus nigrita (Paykull)
 Pterostichus oblongopunctatus (Fabricius)
 Pterostichus strenuus (Panzer)
 Stomis pumicatus (Panzer)
Tribe Sphodrini
 Calathus fuscipes (Goeze)
 Calathus melanocephalus (Linnaeus)
 Calathus rotundicollis Dejean
 Platyderus depressus (Audinet-Serville)
Tribe Platynini
 Agonum marginatum (Linnaeus)
 Agonum muelleri (Herbst)
 Agonum thoreyi Dejean
 Anchomenus dorsalis (Pontoppidan)
 Paranchus albipes (Fabricius)
 Platynus assimilis (Paykull)
Tribe Zabrini
 Amara aenea (De Geer)
 Amara apricaria (Paykull)
 Amara bifrons (Gyllenhal)
 Amara communis (Panzer)
 Amara convexior Stephens
 Amara familiaris (Duft)
 Amara lunicollis Schiodte
 Amara ovata (Fabricius)
 Amara plebeja (Gyllenhal)
 Amara similata (Gyllenhal)
 Curtonotus aulicus (Panzer)
 Zabrus tenebrioides (Goeze)
Tribe Harpalini
 Acupalpus dubius Schilsky
 Acupalpus exiguus De Jean
 Acupalpus meridianus (Linnaeus)
 Acupalpus parvulus (Sturm)
 Anthracus consputus (Duftschmid)
 Bradycellus verbasci (Duftschmid)
 Harpalus affinis (Schrank)
 Harpalus latus (Linnaeus)
 Harpalus rubripes (Linnaeus)
 Harpalus rufipes (De G.)
 Harpalus rufipes (De G.)
 Ophonus puncticeps Steph.
 Ophonus rufibarbis (Fab.)
 Stenolophus mixtus (Herbst)
 Trichocellus placidus (Gyllenhal)
Tribe Licinini
 Badister bullatus (Schrank)
Tribe Panagaeini
 Panagaenus bipustulatus (Fabricius)
Tribe Lebiini
 Demetrias atricapillus (Linnaeus)
 Dromius quadrimaculatus (Linnaeus)
 Lebia chlorocephala (Hoffmann, J.)
 Microlestes minutulus (Goeze)
 Paradromius linearis (Olivier)
 Syntomus foveatus (Geoffroy)
 Syntomus obscuroguttatus (Duftschmid)
Cerambycidae
Cerylonidae
Chrysomelidae
Ciidae
Clambidae
Cleridae
Coccinellidae
Colydiidae
Corylophidae
Cryptophagidae
Cucujidae
Curculionidae
Dascillidae
Dasytidae
Dermestidae
Derodontidae
Dryophthoridae
Dryopidae
Dytiscidae
Elateridae
Elmidae
Endomychidae
Erirhinidae
Erotylidae
Eucnemidae
Georissidae
Geotrupidae
Gyrinidae
Haliplidae
Helophoridae
Heteroceridae
Histeridae
Hydraenidae
Hydrophilidae
Hygrobiidae
Kateretidae
Laemophloeidae
Lampyridae
Latridiidae
Leiodidae
Lucanidae
Lycidae
Lymexylidae
Malachiidae
megalopodidae
Melandryidae
Monotomidae
Mordellidae
Mycetophagidae
Nanophyidae
Nitidulidae
Noteridae
Oedemeridae
Orsodacnidae
Phalacridae
Platypodidae
Ptinidae
Pyrochroidae
Raymondionymidae
Rhynchitidae
Salpingidae
Scarabaeidae
Scirtidae
Scraptiidae
Silphidae
Silvanidae
Sphaeriusidae
Staphylinidae
Tenebrionidae
Tetratomidae
Throscidae
Trogidae