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Sunday, 13 October 2013

More leaf mines

Went out yesterday afternoon to look for possible yellow-browed warblers in an area close to my home at Pwll - the wet carr, wetlands and deciduous plantings just east of Ashpits Pond, Burry Port
(a former power station settling lagoon that has been landscaped to form a wildlife-rich water body). This area extends eastwards to form another area of wet willow/birch carr (2nd photo below, with royal and hard ferns etc) and open reedbed/fen at `Pwll Lagoon`, which lies immediately below my house and is the probable source of many wetland moths recorded in my home trap at Tyrwaun.

There was -obviously - little chance of finding a yellow-browed warbler `cold` as it were and, indeed, I failed, with only a distant `hoeet` suggesting any leaf warblers present. I did stumble across a comma caterpillar on a nettle patch though, a distinctive and easy-to-identify species.

I also noted various leaf-mines or miscellaneous larval damage on some of the trees planted in the area such as on Salix purpurea, Corylus sp. and Alnus incanus.

Above: Salix purpurea, note caterpillar in second photo.

Above: Corylus sp.

Above: Alnus incana.
I don`t expect anyone to identify the above, but if they want to try, all are welcome. I`ve looked at the online identification resources and often it is n`t straightforward! For the Alnus, for example, it MAY be the hymenopteran Fenusa dohrnii or the lepidopteran Phyllonrycter strigulatella....but I`m not all confident!
I also had the `home actinic` out last night, but only the `autumn regulars` were caught.


  1. I'm pretty sure the 'Tilia sp' is actually hazel and the mines are Phyllonorycter coryli - as far as I know there aren't any miners which make blotches like that on limes. P coryli is usually common but this year it is particularly abundant with almost all hazels supporting mines (at least in Glamorgan).

    I think the alder mines may be the sawfly you mention - they don't look quite right for lep mines.

    The Salix larva looks interesting - not sure what it is though!


  2. [BIG!] ooops - don`t tell Barry Stewart [he`ll laugh his head off and start calling me `Hazel Nuts` or some other wind-up!] - the leaves are hazel. I collected both at the site. I`ll correct the main posting!
    Thanks George.

  3. A-ha! So that''s your alter-ego ;-)

  4. Well spotted George! Ian, upperside Phyllo mines on Hazel are P coryli, like yours, underside are P. nicellii; there's also potential for Parornix devoniella mines which are slightly smaller and associated with a leaf edge fold.

    I agree the Salix mine looks interesting...