The leaf and stem  mines of British flies and other insects by Brian Pitkin, Willem Ellis, Colin Plant and Rob Edmunds


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Psychoides verhuella Bruand, 1853
[Lepidoptera: Tineidae]


Psychoides verhuella Bruand, 1853. Mém. Soc. d'Émul. Doubs. 3 : 109.


Leaf-mine: Full-depth corridor or blotch, often positioned along the leaf margin. In the first part much, brown-black, fine-grained frass, later parts of the mine almost free from frass. After hibernation the larva lives free in an untidy case of silk, covered with remants of sori (Nederlandse bladmineerders). The mine is illustrated in UKMoths.

Larva: Larva (early and late instars) has black head, prothoracic plate and anal plate, which distinguish it from the other fern frond species P. filicivora (UKMoths).

Pupa: Pupal case has sharp crest when unworn (UKMoths). In the larval case, often on the hostplant (Pelham-Clinton, 1985a).

Hosts in Britain:

Aspleniaceae      
Asplenium     Pelham-Clinton, 1985a
Asplenium     Plant, in Pitkin & Plant, 2005
Ceterach     Pelham-Clinton, 1985a
Ceterach officinarum Rustyback Plant, in Pitkin & Plant, 2005
Phyllitis scolopendrium Hart's-toungue Plant, in Pitkin & Plant, 2005
Phyllitis scolopendrium Hart's-toungue UKMoths
Polystichum setiferum   Plant (pers. comm.)

Hosts elsewhere:

Aspleniaceae      
Asplenium ruta-muraria Wall-rue Nederlandse bladmineerders
Asplenium trichomanes Maidenhair Spleenwort Nederlandse bladmineerders
Dennstaedtiaceae      
Pteridium aquilinum Bracken Nederlandse bladmineerders

Time of year - mines: August-June, most prominent April-May (UKMoths).

Time of year - adults: June-July (UKMoths).

Distribution in Britain: Most frequent in Wales and W. England, including Salop, Flint, Denbigh, Caernarvon (UKMoths), East Perth, Mid Perth, North Devon and West Norfolk (NBN Gateway distribution map - BRERC, JNCC, NE and SNH).

Distribution elsewhere: Europe including Austria, Belgium, Czech Republic, Hungary, Poland, Romania and Slovakia (Karsholt & van Nieukerken in Fauna Europaea).

Parasitoids: Unknown.



External links: Search the internet:

Belgian Lepidoptera
British leafminers
NBN Gateway

Nederlandse bladmineerders
Fauna Europaea [285660]
UKMoths

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Last updated 28-Sep-2008  Brian Pitkin