35.058 Metzneria metzneriella (Meadow Neb)
ws: 14-19mm: Jun-Aug; common knapweed (Centaurea nigra), saw-wort (Serratula tinctoria); common throughout Britain
Metzneria metzneriella §1 female
ID: to genus from male genital key: Abdominal segment 8 forming complete ring around genitalia; uncus not divided into two lobes; valvae symmetrical; gnathos absent; tegumen with uncus shorter than valvae; uncus short and wide, hardly differentiated from tegumen; valva constricted in middle, expanded towards apex > Metzneria
ID: to species: forewing ground colour not greyish white; forewing stigmata present > M.lappella/metzneriella
These two are similar and best differentiated by genital features:
Male genitalia: Aedeagus with discrete (relatively) large cornuti; valva with a small beak; sacculus about as long as wide and angular at apex.
Female genitalia: Apophysis ratio 2.5 : 2.0; junction sclerotisation and S8 quadrate - see Metzneria
ID: to species: forewing ground colour not greyish white; forewing stigmata present > M.lappella/metzneriella
These two are similar and best differentiated by genital features:
Male genitalia: Aedeagus with discrete (relatively) large cornuti; valva with a small beak; sacculus about as long as wide and angular at apex.
Female genitalia: Apophysis ratio 2.5 : 2.0; junction sclerotisation and S8 quadrate - see Metzneria
§1 Silverdale, Lancashire; 20/06/2014; female; fw 6.9mm
§2 Portland, Dorset; 23/06/2015; male; to light
§3 Portland, Dorset; 25/06/2015; male; fw 8.4mm; to light
§4 Foulden Common, Norfolk; 29/06/2017; female; fw 6.6mm
§5 Orlestone Forest, Kent; 04/06/2019; male
§6 Orlestone Forest, Kent; 04/06/2019; male; fw 7.7mm
All images © Chris Lewis
§2 Portland, Dorset; 23/06/2015; male; to light
§3 Portland, Dorset; 25/06/2015; male; fw 8.4mm; to light
§4 Foulden Common, Norfolk; 29/06/2017; female; fw 6.6mm
§5 Orlestone Forest, Kent; 04/06/2019; male
§6 Orlestone Forest, Kent; 04/06/2019; male; fw 7.7mm
All images © Chris Lewis
Page published 15/11/2014 (§1) | §2&3 added 05/03/2016 | §4 added 07/10/2017 | §5&6 added 21/01/2020
