35.054 Metzneria neuropterella (Zeller, 1839)

Status and Distribution

Very local, in south-east England (Kent, Surrey and Sussex). In the 1950s several were bred from Portland, Dorset, but there have been no more recent records from this area.

 

National Status: 

pRDB 2

Bradley & Fletcher no: 

727
Photographer: Photo wanted

Provisional Map

Maps updated with all data received by January 2022.

Set Specimens

Metzneria neuropterella bred Cirsium acaule, Beachy Head, Sussex 1997 (Photo: B Heckford)

Dissection Group

Foodplant and Larval Feeding Signs

Cirsium acaule (dwarf thistle), see plant distribution map, and Centaurea nigra (common knapweed).

No external signs of feeding damage.

Foodplant Map

Habitat

Short-turfed, herb-rich chalk downland.

Finding the Moth

Larva: feeds internally on the seeds from late August onwards, overwintering inside the seed-head. Detailed description of larval feeding habits can be found in The Moths and Butterflies of Great Britain and Ireland Vol. 4 (2) where it is advised there is no outward sign of larval presence.  The larvae were invariably in attached seedheads where the bracts were still greenish brown and the pappus still white.  Pupates in June.

Adult: flies at dusk and night and comes to light. Tim Wilton, pers. obs., noted they were active at dusk making slow ponderous flights which often ended with the moths landing on common knapweed stems and flowers.

Similar Species

Metzneria aprilella is usually smaller and has orange-red streaks. Metzneria lappella and Metzneria metzneriella have a prominent black spot two thirds of the way along the forewing.

Larval Occurrence

Larval Occurrence

Flight Period

Flight Period

Single-brooded.  All records of imago received to date have been from late July to mid-August.  The Moths and Butterflies of Great Britain and Ireland Vol 4 (2) gives June to August as flight period.

Earliest: 23rd July 1892 (VC17)

Latest: 18th August 1894 and 1985 (VC17 & 14 respectively)