Species Account

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Distribution


 
 

Summary Data


Season (Adult / Immature):

National Status: Common

Local Status: Fairly common and thinly distributed resident.

Local Record: Grade 1   See here for explanation

Flight time: Two generations, May-Jul. Aug-Sep.

Forewing: 12-15mm.

Foodplant: Red Campion.

IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

 VC9VC11Region
Year first recorded195619881956
Year last recorded201120112011
Number of records3554718
Number of individuals4254858
Unique positions1052214
Unique locations943194
Adult records3254658
Immature records000

For the region, we have a total of 718 records from 194 sites. Earliest record on file is in 1956.
 

Photos


1802 Rivulet 01
© Dave Foot

Species Account


Similar species: 1803 Small Rivulet.

For further information refer UK Moths.

Davey, P., 2009: A species found over much of Britain, but local in northern Scotland, the larva feeding in the flowers and seed capsules of red campion (Silene dioica). In Dorset, the moth is at low density but widespread, frequent in the west and north but becoming scarcer further east, typically occurring on hedgebanks and in woodland where Red Campion abounds.

Care is needed in identifying potential Rivulet as they superficially resemble the Small Rivulet1803. Diagnostics include: a larger species; emerges up to a month earlier; the single circular indentation two-thirds of the way down the postmedian fascia on this species is diagnostic (compare with the double indentation half-way down on the Small Rivulet1803).


 

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