Small Yellow Wave       Blomer's Rivulet
70.115 BF1873  –  Geometridae –  Larentiinae – Venusia cambrica – Welsh Wave Adult Macro:  CAT 2 – Can be confused with other species – Can be confused with other species       PDF Icon – click for Adult Macro Verification Guidelines
Blue –  Generally Common / Widespread   
Taxonomy:   Macro  >> .  . >>  Geometridae  >> Larentiinae
ID Difficulty:  amber  – care required in the identification process, as confusion with similar species is likely – quality photographs required.
Confusion Species:  Waved Carpet
ID pointers: Characterised by a pair of blackish spikes projecting from the centre of the post median cross-line. Ground colour is usually a whitish-grey. There is a dark form bradyi, where forewing is a dark-grey and most of the markings are obscured. Waved Carpet (Hydrelia sylvata) is similar but with cross-lines less distinct and lacking the pair of spikes.
Distribution:  Despite very few records of this species, it is a resident that is fairly common in the woodlands of the upland gritstone areas, where it can be common amongst the Rowan. Simply under-recorded.
Flight Period: July /  August /  –  On the wing – July – August Moth Activity: Nocturnal   – but often seen by day Photographed: Yes –  Photographed By: Christian Heintzen, Graham Finch, Tony Sinnott  © All Rights Reserved
*** Last updated on 5 May 2025 by RP ***
Wingspan: 27-30mm
 Food Plant: Rowan (Sorbus aucuparia).
Recorded dates for Common [Blue code Blue-coded] moths are not stored on the website at this current time.
IMAGES BELOW:  Wildboar Clough, Longdendale, Derbyshire 07/07/2023 – Christian Heintzen ©    /   Matlock, Derbyshire 23/06/2005 Graham Finch ©

70.115 BF1873 - Welsh Wave - Geometridae - Venusia cambrica
Welsh Wave – Venusia cambrica – Christian Heinzten
70.115 BF1873 - Welsh Wave - Geometridae - Venusia cambrica
Welsh Wave – Graham Finch
Welsh Wave - 22/7/2018 - Kelstedge - Tony Sinnott
Welsh Wave – 22/7/2018 – Kelstedge – Tony Sinnott
70.115 BF1873 - Welsh Wave - Geometridae - Venusia cambrica
70.115 BF1873 - Welsh Wave - Geometridae - Venusia cambrica
Welsh Wave - 22/7/2018 - Kelstedge - Tony Sinnott

no images were found

Distribution Map for Venusia cambrica

derbyshiremoths.org © makes no guarantee of accuracy of data used in these maps and charts – they are presented to you with best endeavours and the data behind them updated periodically as time permits. Historic records are being discovered all the time. These will be assessed, so once they are all verified, they will be incorporated onto the map and charts.

Found 39 records
    ↳ 0 from After 2025
    ↳ 2 from 2020 - 2024
    ↳ 37 from Before 2020

If the Map Layers function fails, just refresh the page and it should be OK after. Use the +- zoom on the top left, or on a tablet, use two fingers to zoom. Remember, the last layer you ticked is the one which displays the popup information - they sit on top of each other - de-select then re-select, to see the popup values.

******* Choose ONLY one at a time, of either Monad, Tetrad or Hectad Distribution - each has it's own set of data. Also, the distribution maps cover ALL recorded data. *******

Bedrock Geology ** indirectly affects moth distribution by influencing the type of habitat and food plants available in an area. In turn, this may affect the types of moths that can thrive, or where they can most likely be found.


Monthly Records By Year: Venusia cambrica

Monthly Counts By Year: Venusia cambrica

Recordings By Year: Venusia cambrica

Annual Growth Rate (AGR): Venusia cambrica
AGR: -0.48%   |   Total % Change: -11%
Years Analysed: 2000 – 2024

Hectad (10kmx10km) Coverage: Venusia cambrica

Flight Periods – Indicative –vs– Recorded Data
Venusia cambrica

Flight Period chart – the grey hatched area above, which can cross one or more months, pictorially represents the best guess we have for this moth's flight periods [month/s]. The coloured lines represent the actual months seen in flight, from site observation records received between 2020-2025.

Records Behind the Map and Charts - Venusia cambrica – 39 records available

Listed by Year - descending

TaxonSite NameTetradYearDateCountStage
Venusia cambricaLongdendale, Wildboar CloughSK09U202307/07/20231adult
Venusia cambricaClarkes Plantation, Two Dales, MatlockSK26W202123-Jul-215adult
Venusia cambricaYew Tree FarmSK36H201822/07/20181adult
Venusia cambricaBilberry Wood, AmbergateSK35L201202/08/20121Adult
Venusia cambricaFlash Lane,Beeley MoorSK26X201127/06/20111Adult
Venusia cambricaThe Hollies,Station Rd,Darley DaleSK26R200916/08/20091Adult
Venusia cambricaThe Mays,Malthouse Lane,FroggattSK27N200928/06/20091Adult
Venusia cambricaThe Mays,Malthouse Lane,FroggattSK27N200928/06/20091Adult
Venusia cambricaFlash Lane,Beeley MoorSK26X200926/06/20096Adult
Venusia cambricaFlash Lane,Beeley MoorSK26X200616/07/200611Adult
Venusia cambricaAlport Dale, nr Ladybower ResrSK18P200518/07/20052Adult
Venusia cambricaSeventy Acre Woods/Flash Lane, DerbyshireSK26Y200523/06/20059adult
Venusia cambricaBeeley (Seventy Acre Wood)SK26Y200523/06/20059Adult
Venusia cambricaBlackrocks,CromfordSK25X200431/07/20041Adult
Venusia cambricaHalldale Wood,nr Darley DaleSK26X200417/06/20041Adult
Venusia cambricaBlacka Moor, Dore, SheffieldSK28V200306/06/20031Adult
Venusia cambricaBlacka Moor, Dore, SheffieldSK28V200306/06/20031Adult
Venusia cambricaRavenstor YHASK17L200123/06/20011Adult
Venusia cambricaFlash Lane,Beeley Moor (site not precise)SK26X199909/07/19991Adult
Venusia cambricaFlash Lane,Beeley Moor (site not precise)SK26X199914/07/199914Adult
Venusia cambricaBroadhurstedge Plantation, New MillsSJ98Y199027/07/19901Adult
Venusia cambricaBroadhurstedge Plantation, New MillsSJ98Y199027/07/19901Adult
Venusia cambricaFoxholes Lane, Tansley (site not precise)SK36F198922/07/19891Adult
Venusia cambricaMatlock (Teacher Training College)SK36A198224/07/19821Adult
Venusia cambricaMatlock Moor, Cuckoostone (near golf course)SK36B198206/07/19821Adult
Venusia cambricaMatlock (Teacher Training College)SK36A198113/08/19811Adult
Venusia cambricaMatlock (Teacher Training College)SK36A198010/08/19801Adult
Venusia cambricaMatlock Moor, Cuckoostone (site not precise)SK36B198013/07/198020Adult
Venusia cambricaMatlock (Teacher Training College)SK36A198030/07/19801Adult
Venusia cambricaFlash Lane,Beeley MoorSK26X197526/07/19751Adult
Venusia cambricaGoyt Valley, Buxton (site not precise)SK07C196215/07/19622Adult
Venusia cambricaGoyt Valley, Buxton (site not precise)SK07C196111/07/19612Adult
Venusia cambricaGoyt Valley, Buxton (site not precise)SK07C196113/07/19612Adult
Venusia cambricaHoly Moor, Holymoorside (site not precise)SK36J192308/07/19231Adult
Venusia cambricaHoly Moor, Holymoorside (site not precise)SK36J192201/07/19221Adult
Venusia cambricaChesterfield (site not precise)SK37G190904/08/19091Adult
Venusia cambricaGoyt's Moss, Buxton (site not precise)SK07C190301/01/1903 - 31/12/19031Adult
Venusia cambricaLathkill Dale (site not precise)SK16S190201/01/1902 - 31/12/19021Adult
Venusia cambricaGrindleford, FroggattSK27N190001/01/1900 - 31/12/19001Adult

Small Yellow Wave       Blomer's Rivulet

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