Hygrotus inaequalis
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Coleoptera
- family: Dytiscidae
- genus: Hygrotus
- species: Hygrotus inaequalis
- Illmitz
- Rust
- Wallern im Burgenland
Burgenland
Austria- Berlare
- Damme
- Holsbeek
- Huldenberg
- Zonhoven
Flanders
Belgium- Ponoka
Alberta
Canada- France
- Blankenburg
- Karow
Berlin- Ohne
Lower Saxony- Dersekow
- Dreschvitz
- Faulenrost
- Gutow
- Ivenack
- Neukalen
- Ribnitz-Damgarten
- Wasdow
- Woldegk
Mecklenburg-Vorpommern- Jena
Thuringia
Germany- Gaillimh
Connaught- Arklow
- Charlesland
- Drogheda
- Kilkenny
- Loch Garman
- New Ross
Leinster- Cill Airne
- Clonakilty
- Cobh
- Dunmanway
Munster- Ballyshannon
- Clones
Ulster
Ireland- Ramsey
00
Isle Of Man- Hudiksvall
- Järvsö
Gävleborg- Nybro
Kalmar- Ingelstad
Kronoberg- Bergshamra
- Brevik
- Djursholm
- Hemmesta
- Jakobsberg
- Skytteholm
- Solna
- Vallentuna
Stockholm- Karlstad
Värmland- Sävar
Västerbotten- Gråbo
Västra Götaland- Ås
Örebro
Sweden- Abbotts Ann
- Abram
- Acle
- Adlington
- Aldeburgh
- Allhallows
- Alsager
- Alton
- Ancroft
- Annfield Plain
- Appleton
- Appley Bridge
- Arlesey
- Armthorpe
- Arnside
- Arundel
- Asfordby
- Ash
- Ashbourne
- Askam in Furness
- Askern
- Audley
- Awsworth
- Axbridge
- Backworth
- Bakewell
- Baldock
- Barking
- Barlborough
- Barlby
- Barnet
- Barrow upon Humber
- Barrow upon Soar
- Barton upon Humber
- Basingstoke
- Bassingbourn
- Bawtry
- Bay Horse
- Bayswater
- Beadnell
- Bebington
- Bedlington
- Beighton
- Belsize Park
- Belvedere
- Bembridge
- Bempton
- Bentley
- Benwell
- Berrington
- Bexhill-on-Sea
- Billinghay
- Bilston
- Bircotes
- Bishop Middleham
- Bishops Stortford
- Bishopthorpe
- Blackwell
- Blacon
- Blagdon
- Blaydon-on-Tyne
- Bleadon
- Bodle Street
- Bolsover
- Bolton
- Bolton upon Dearne
- Bordon
- Boroughbridge
- Borrowash
- Botesdale
- Bottisham
- Bovey Tracey
- Bradfield
- Brading
- Bramford
- Brampton
- Braunton
- Bredbury
- Breighton
- Bridgwater
- Brightlingsea
- Briston
- Brockenhurst
- Broomfleet
- Brough
- Broughton
- Broxbourne
- Brundall
- Bubwith
- Buntingford
- Burgess Hill
- Burnham on Crouch
- Burnham-on-Sea
- Burnopfield
- Bursledon
- Burton
- Burton Constable
- Burton upon Trent
- Burtonwood
- Bury
- Bury St Edmunds
- Butcombe
- Campsall
- Canterbury
- Canvey Island
- Carlisle
- Carshalton
- Castle Donington
- Castleford
- Catcliffe
- Caterham
- Catterick
- Chadwell St Mary
- Chafford Hundred
- Chalton
- Charvil
- Chatham
- Cheddar
- Chelsea
- Cherry Burton
- Cheshunt
- Chesterfield
- Chichester
- Chigwell
- Chobham
- Chorleywood
- Chorlton
- Church Stretton
- Clevedon
- Cleveleys
- Cliffe
- Cockermouth
- Coddington
- Colchester
- Comberton
- Congleton
- Congresbury
- Coningsby
- Conisbrough
- Cooling
- Copmanthorpe
- Coppull
- Corby
- Corsley
- Cotgrave
- Cottenham
- Coxhoe
- Cramlington
- Cranbrook
- Crawley Down
- Cresswell
- Crewe
- Croft
- Crowle
- Crowthorne
- Cuddington
- Curry Rivel
- Dagenham
- Darlington
- Darras Hall
- Dartford
- Deal
- Deanshanger
- Deddington
- Deighton
- Denham
- Denton
- Dinnington
- Ditton Hill
- Doddington
- Doncaster
- Donisthorpe
- Downham Market
- Dukinfield
- Earlsfield
- Easington Colliery
- East Bergholt
- East Boldon
- East Ham
- East Harling
- East Molesey
- East Peckham
- Easton-in-Gordano
- Eastwood
- Eaton
- Eccles
- Eccleshall
- Eccleston
- Egremont
- Ellerton
- Ellesmere
- Elm Park
- Elstead
- Elstow
- Elton
- Elvington
- Ely
- Embleton
- Erith
- Esher
- Essington
- Etwall
- Euxton
- Eversley
- Exminster
- Eye
- Eynsford
- Fakenham
- Farndon
- Farnham
- Farnham Royal
- Faversham
- Featherstone
- Fimber
- Findern
- Flitwick
- Formby
- Four Marks
- Freckleton
- Freshwater
- Fulford
- Gainsborough
- Glinton
- Glossop
- Gloucester
- Godstone
- Goostrey
- Grange-over-Sands
- Gravesend
- Grays
- Great Bookham
- Great Eccleston
- Great Sankey
- Great Wyrley
- Greatham
- Greenford
- Griston
- Guilden Sutton
- Hackney
- Hadleigh
- Haigh
- Hale
- Hamble
- Hammersmith
- Harbury
- Harefield
- Harleston
- Harpenden
- Harrogate
- Hartford
- Harthill
- Hatfield
- Haughton Green
- Haxby
- Haydock
- Hayle
- Hayton
- Haywards Heath
- Hazlerigg
- Heacham
- Heage
- Healey
- Heanor
- Heathfield
- Helmsley
- Helpston
- Helsby
- Hemingford Grey
- Henfield
- Henlow
- Hertford
- Heslington
- Heswall
- Heywood
- High Barnet
- High Halstow
- Highbridge
- Hinchley Wood
- Hindley
- Histon
- Hitchin
- Hollingworth
- Holmes Chapel
- Holmpton
- Holtby
- Hook
- Hoole
- Horam
- Hornsea
- Houghton on the Hill
- Houghton-le-Spring
- Howden
- Hugh Town
- Huntington
- Hutton
- Hyde
- Hythe
- Ibstock
- Ilkeston
- Ince
- Ince Blundell
- Ingoldmells
- Ipswich
- Isleham
- Isles of Scilly
- Ivinghoe
- Kegworth
- Kempston Hardwick
- Kenn
- Kensington
- Kewstoke
- Kidlington
- Killamarsh
- Kilpin
- Kimberley
- Kings Worthy
- Kingsbury
- Kingsley
- Kingston Seymour
- Kingston upon Thames
- Kingstone
- Kirkham
- Knaphill
- Knaresborough
- Landewednack
- Larkfield
- Ledsham
- Ledston
- Lenham
- Letchworth
- Letchworth Garden City
- Leven
- Lewes
- Leyland
- Leysdown-on-Sea
- Little Amwell
- Little Hallingbury
- Little Lever
- Little Paxton
- Littlehampton
- Littleport
- Long Eaton
- Longdendale
- Longridge
- Lydd
- Lyminge
- Lynemouth
- Maghull
- Maidstone
- Malmesbury
- Malpas
- Malton
- Manea
- Manningtree
- Manton
- Marden
- Marholm
- Market Drayton
- Market Harborough
- Market Overton
- Market Weighton
- Marston
- Martham
- Maryport
- Maulden
- Measham
- Melbourn
- Melbourne
- Meldreth
- Melksham
- Meopham
- Mexborough
- Mickle Trafford
- Middlewich
- Millington
- Millom
- Milnrow
- Mitcham
- Mobberley
- Mollington
- Monk Fryston
- Morecambe
- Moreton
- Mottram St. Andrew
- Mountsorrel
- Mullion
- Murton
- Neston
- Nether Poppleton
- Newark on Trent
- Newborough
- Newburn
- Newhaven
- Newick
- Newington
- Newmarket
- Newport
- North Elmham
- North Ferriby
- North Petherton
- North Sunderland
- Northam
- Northborough
- Northolt
- Northwich
- Norton
- Oadby
- Oakham
- Oakmere
- Orgreave
- Oundle
- Oxford
- Padiham
- Pangbourne
- Pannal
- Paull
- Peakirk
- Pelton
- Pembury
- Pershore
- Peterborough
- Pevensey
- Pickering
- Pinchbeck
- Pinxton
- Pitsea
- Pontefract
- Ponteland
- Potters Bar
- Poulton le Fylde
- Preesall
- Prenton
- Prescot
- Pudsey
- Pulborough
- Pulloxhill
- Purfleet
- Puriton
- Queniborough
- Quorndon
- Radcliffe
- Radcliffe on Trent
- Radley
- Rawmarsh
- Rayleigh
- Reading
- Redditch
- Reed
- Repton
- Retford
- Riccall
- Richmond
- Ringmer
- Ringway
- Ripley
- Robertsbridge
- Rode Heath
- Rowlands Gill
- Royston
- Ruddington
- Ryde
- Rye
- Ryhill
- Sacriston
- Saint Albans
- Saint Dennis
- Saint Leonards-on-Sea
- Saint Neots
- Saint Osyth
- Salford
- Sandbach
- Sandown
- Saughall
- Saxilby
- Scalby
- Scholes
- Scotby
- Seaton Delaval
- Seaview
- Sedgefield
- Seghill
- Selby
- Selsey
- Severn Beach
- Shafton
- Sheffield
- Shenley AV
- Sherburn in Elmet
- Shirebrook
- Shiremoor
- Shoreham-by-Sea
- Shotley Gate
- Shotwick
- Sileby
- Skelton
- Slaley
- Snodland
- Sonning
- South Benfleet
- South Cave
- South Collingham
- South Nutfield
- South Ockendon
- Southall
- Southport
- Southwater
- Southwold
- Spalding
- Staines
- Stainton
- Stalham
- Stanley
- Stanmore
- Starcross
- Staveley
- Stevenage
- Stilton
- Stoke
- Stone
- Stotfold
- Stourport-on-Severn
- Streetly
- Strensall
- Stretton
- Studley
- Sudbury
- Sunderland
- Sunningdale
- Surbiton
- Sutton Courtenay
- Sutton upon Derwent
- Sway
- Tanfield
- Tarleton
- Tarporley
- Tarvin
- Teddington
- Tenterden
- Terrington Saint John
- Thames Ditton
- The Boldons
- Theydon Bois
- Thornhaugh
- Thornley
- Thornton
- Thornton-Cleveleys
- Thrapston
- Tilbury
- Tilehurst
- Todwick
- Tonbridge
- Topsham
- Trafford Park
- Treeton
- Twyford
- Tyldesley
- Uckfield
- Ufford
- Upton
- Uxbridge
- Wadhurst
- Wainfleet All Saints
- Wales
- Walkden
- Wallasey
- Waltham Abbey
- Waltham Cross
- Walthamstow
- Walton-on-the-Naze
- Wandsworth
- Wansford
- Warboys
- Ware
- Wareham
- Wargrave
- Warsop
- Warton
- Washington
- Waterbeach
- Wath upon Dearne
- Watton at Stone
- Waverton
- Wedmore
- Wednesfield
- Wells
- Wells-next-the-Sea
- Welton
- Welwyn
- Welwyn Garden City
- Wendover
- Wentworth
- West Bridgford
- West Cornforth
- West Hallam
- West Rainton
- West Thurrock
- Westhoughton
- Weston
- Weston Turville
- Weston-super-Mare
- Westonzoyland
- Wetwang
- Wheldrake
- Whickham
- Whiston
- Whitby
- Whitchurch
- White Waltham
- Whittlesey
- Whitton
- Widnes
- Wigginton
- Wigston Magna
- Willaston
- Willingham
- Winchester
- Wingate
- Wingerworth
- Winterbourne
- Winterbourne Stoke
- Wittering
- Woking
- Woodford Green
- Woodsetts
- Woodstock
- Wooler
- Worcester
- Worlaby
- Wortley
- Wye
- Wylam
- Wymondham
- Yarmouth
- Yarnton
- Yatton
- Yaxley
- York
England- Armagh
- Ballygowan
- Ballynahinch
- Belfast
- Enniskillen
- Holywood
- Limavady
- Moira
- Tandragee
Northern Ireland- Aberdeen
- Aviemore
- Ballingry
- Bathgate
- Bearsden
- Bishopton
- Bo’ness
- Burntisland
- Carluke
- Castle Douglas
- Coylton
- Crossgates
- Cumbernauld
- Dalbeattie
- Dornoch
- Dreghorn
- Dumfries
- Dundonald
- East Calder
- Fauldhouse
- Galston
- Glenboig
- Hawick
- Irvine
- Isle of Cumbrae
- Kinross
- Kirkintilloch
- Linlithgow
- Loanhead
- Locharbriggs
- Lochmaben
- Lochwinnoch
- Longniddry
- Millport
- Milnathort
- Milngavie
- Motherwell
- Muir of Ord
- Muirkirk
- New Cumnock
- Newmains
- Newton Mearns
- Oban
- Polmont
- Port Glasgow
- Seafield
- Stevenston
- Tayport
- Thornhill
- Wishaw
Scotland- Abergele
- Barmouth
- Benllech
- Bishton
- Caldicot
- Cardigan
- Castlemartin
- Fishguard
- Goldcliff
- Goodwick
- Gresford
- Herbrandston
- Holt
- Kidwelly
- Lampeter
- Landore
- Llandybie
- Llanelli
- Llangefni
- Llangoed
- Llanrwst
- Llanwern
- Magor
- Manorbier
- Marshfield
- Mathry
- Merthyr Tydfil
- Nash
- Redwick
- Rhosllanerchrugog
- Rhuddlan
- Rhyl
- Rogiet
- Saint David’s
- Swansea
- Tenby
- Tywyn
Wales
United Kingdom