Observations in the Species: Dytiscus marginalis
English Name: Great Diving Beetle
Observed on: 25th April 2013
Added to iSpot: 25th April 2013
Identifications: 3
Agreements: 4
Comments: 4
Description: Found in moth trap. Just over 30mm long.
Observed on: 22nd August 2007
Added to iSpot: 27th January 2013
Identifications: 1
Agreements: 3
Comments: 0
Observed on: 26th June 2012
Added to iSpot: 26th June 2012
Identifications: 1
Agreements: 1
Comments: 0
Description: What lurks beneath? Actually this was walking along the track when I first saw it, do they come out of water when changing to adult?
By: Bugsnapper
Observed on: 19th September 2007
Added to iSpot: 1st May 2012
Identifications: 1
Agreements: 0
Comments: 0
By: Rob Coleman
Observed on: 25th March 2012
Added to iSpot: 25th March 2012
Identifications: 1
Agreements: 0
Comments: 0
Description: Male and female diving beetles. Someone I showed this to thought they were one of the rarer Dytiscus species, but I think they are D. marginalis
Observed on: 20th March 2012
Added to iSpot: 20th March 2012
Identifications: 2
Agreements: 1
Comments: 0
Description: Great Diving Beetle (male and female). Although the key diagnostic features cannot be seen I am reasonably sure that this is D. marginalis based upon the distribution maps on NBN.
Observed on: 29th December 2011
Added to iSpot: 29th December 2011
Identifications: 1
Agreements: 2
Comments: 0
Description: This poor condition specimen was found dead in a water trough and measures 35mm in length.
By: bobedney
Observed on: 21st August 2011
Added to iSpot: 29th December 2011
Identifications: 1
Agreements: 5
Comments: 0
Description: approx 3cm long
crawling across very wet path between marsh/ponds
By: spotter_girl
Observed on: 24th August 2011
Added to iSpot: 2nd September 2011
Identifications: 3
Agreements: 3
Comments: 0
Description: We haven't a clue what this is. Don't know whether this is a nymph beore it changes into something else. This was 7.5cms long approx.
By: Milvus
Location: A694, BlaydonLat/Lng: 54.93953, -1.72576
OS grid ref: NZ176605
Pond dipped from Thornley Pond during Bio-blitz
Close Observed on: 4th June 2011
Added to iSpot: 6th June 2011
Identifications: 1
Agreements: 0
Comments: 0
By: Milvus
Location: A694, BlaydonLat/Lng: 54.9395, -1.72576
OS grid ref: NZ176605
Pond dipped from Thornley Woods Pond
Close Observed on: 4th June 2011
Added to iSpot: 6th June 2011
Identifications: 1
Agreements: 1
Comments: 1
Description: Observed by Nicky Butler, as part of the Derwent Valley Bio-blitz
By: GPYATT
Observed on: 24th April 2011
Added to iSpot: 24th April 2011
Identifications: 1
Agreements: 1
Comments: 1
Description: Large Beetle in our pond ( pond only one year old)
also several larvae of this beetle.
Which species is it?
By: cm23898
Location: Glynde, LewesLat/Lng: 50.859763, 0.064458
OS grid ref: TQ453087
Water filled ditch at edge of reedbed
Close Observed on: 6th April 2011
Added to iSpot: 9th April 2011
Identifications: 1
Agreements: 0
Comments: 0
Description: SIx legs, pincers on front of head, brown in colour, 1.5-2.2cm long
Observed on: 29th May 2010
Added to iSpot: 5th June 2010
Identifications: 1
Agreements: 0
Comments: 1
Description: Large, aggressive water beetle
Location: Banovallum CarrLat/Lng: 53.19, -0.13
OS grid ref: TF2568
Woodland Trust wood planted in 2001 on flood plane between Old River Bain and Horncastle Canal.
Close Observed on: 3rd October 2009
Added to iSpot: 10th October 2009
Identifications: 1
Agreements: 1
Comments: 1
Description: Found in slow moving water.
By: Martin Harvey
Observed on: 13th May 2009
Added to iSpot: 15th May 2009
Identifications: 1
Agreements: 4
Comments: 0
Description: This beetle was caught in a moth-trap by Dave Wilton, and he's asked if we can confirm the species. It seems to key out as Dytiscus marginalis but we're not sure. Are the underside shots sufficient to confirm it?
