15.004 Pale Red Slender (Caloptilia elongella) feeding signs on alder, Milner Royd drain, Sept. 16th 09. First the larva creates an upperside, elongated, silvery blotch, then it leaves the mine and rolls the leaf edge downwards to feed in.  

15.004 Pale Red Slender (Caloptilia elongella) tenanted mine in Common Alder at Tag Loop, July 19th 2019. One of two mines found (see below).

15.004 Pale Red Slender (Caloptilia elongella) tenanted mine in Common Alder at Tag Loop, July 19th 2019.

15.004 Pale Red Slender (Caloptilia elongella) leaf fold, July 29th 2019. After the mining stage was completed the larva spun most of the leaf edge over despite being only 4mm long.

15.005 Red Birch Slender  (Caloptilia betulicola) male to MV light at Norland Moor on Oct. 9th 2021. Gen. det. (CS).

15.006 Small Red Slender (Caloptilia rufipennella), a rolled leaf tip and two blotch mines on Sycamore, Bankhouse wood, June 19th 2014.

15.006 Small Red Slender (Caloptilia rufipennella), a 6mm long blotch mine in Sycamore, Bankhouse wood, June 12th 2014. 

15.006 Small Red Slender (Caloptilia rufipennella), July 7th 2014. Reared from the larva in the rolled leaf edge pictured above.

15.007 Azalea Leaf Miner netted after dusk in the garden, Aug. 3rd 2019. Apparently quite a rare, introduced species to the UK, probably overlooked though as one of the more commoner alchimiella/ robustella group.

15.008 Yellow-triangle Slender (Caloptilia alchimiella) mines and feeding signs on oak, Crimsworth Dean, Hardcastle Crags, Aug. 18th 2012. There are two vacated mines made by separate larvae, one of which has gone on to make the neat, cone shaped fold at the leaf tip in which to feed.  

15.008 Yellow-triangle Slender (Caloptilia alchimiella), a folded leaf edge, Aug. 22nd 2012, details as above. A few minutes after introducing the larva to a fresh leaf it rapidly began to spin the leaf edge over. Countless threads of silk are spun which, as they begin to dry, contract so by pulling the leaf edge over.

15.008 Yellow-triangle Slender (Caloptilia alchimiella), cocoon under a spun leaf edge. After nearly four weeks the larva has finally spun up to pupate. The subsequent pupa was identified by Willem Ellis as being of this species and not the similar Caloptilia robustella.

15.008 Yellow-triangle Slender (Caloptilia alchimiella) pupa, Apr.27th 2013. After spending the winter in the garage in an airtight tuppaware box the pupa was brought indoors on Apr. 4th. Just over three weeks later it has begun to colour up nicely shortly before emergence.

15.008 Yellow-triangle Slender (Caloptilia alchimiella), Apr. 30th 2013. Freshly emerged from the pupa pictured above.

15.010 White-triangle Slender (Caloptilia stigmatella), a rolled leaf tip on Grey Willow at Milner Royd nature reserve on June 9th 2020.
15.010 White-triangle Slender (Caloptilia stigmatella) netted at dusk by the cabin at Cromwell Bottom on July 14th 2018.
15.014 Common Triangle (Gracillaria syringella) mine on garden Privet, Skircoat Green, June 6th 2014.

15.014 Common Triangle (Gracillaria syringella) a tightly rolled leaf on garden Privet, June 6th 2014. Several days later when opened up to move the occupants to a fresh leaf there were four larvae present.

15.014 Common Triangle (Gracillaria syringella), June 28th 2014. Reared from a larva in the leaf fold pictured above.

15.014 Common Triangle (Gracillaria syringella), a mating pair, North Dean wood, May 16th 05. A field observation.

15.015 Ribwort Slender (Aspilapterix tringipennella), mine (centre) on Ribwort Plantain, Tag meadow, Apr. 21st 2014. The internal spinning eventually causes the leaf to pucker and fold. Mines seem to be a lot more readily found here than in many other areas nearby.

15.015 Ribwort Slender (Aspilapterix tringipennella), May 5th 2014. Reared from larvae found in mines on Ribwort Plantain at Tag Loop (see above).

15.025 Brown Birch Slender (Parornix betulae) to MV light at my new place in Luddenden Foot on July 28th 2022. It's nice to finally see an adult Parornix in the flesh after all this time. Unfortunately it died a few hours after capture before I could get a decent photo. Gen. det. (CS).

15.025 Brown Birch Slender (Parornix betulae), feeding signs on birch at Maple Dean clough, North Dean wood on June 17th 2020. At first a brown Phyllonorycter type mine is formed and then the larva feeds in a folded leaf edge. 

15.028 Hawthorn Slender (Parornix anglicella), mine and folded leaf edge on Hawthorn by the towpath at Elland Bridge, Aug. 10th 2017. A very common species whose feeding signs easily found.

15.029 Hazel Slender (Parornix devoniella), mine and folded leaf edge on Hazel at Hollas Lane, Copley, Aug. 13th 2017. An angular blotch mine against the mid-rib, lower left and then on to a small, folded leaf edge at the top. Quite easy to find once familiar with these two signs.

15.029 Hazel Slender (Parornix devoniella), mine and feeding larva on Hazel, Aug. 19th 2019. Found at Shibden Dale two days earlier.

15.029 Hazel Slender (Parornix devoniella), exposed larva, Aug. 22nd, from the mine pictured above.

15.030 Rowan Slender (Parornix scoticella) larva and feeding signs on Rowan, North Dean wood, Sept. 20th 2010.
15.032 Pointed Slender (Parornix finitimella) mine and folded leaf edge on Blackthorn, Park Wood crematorium, July 18th 2017.
15.022 Apple Slender (Callisto denticulella) mine on apple, Skircoat Green allotments, July 9th 2017. An initial gallery opening out to an orange blotch.

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