Review of 2019 and 2020 - Caddisflies: part 2 of Limnephilidae

Family LIMNEPHILIDAE (continued)


Limnephilus affinis - A total of 21 caught in the garden between 12th September and 23rd October 2019 and 12 between 12th September and 11th November 2020 (none seen in either year in the April to June generation when they are always thinner on the ground).  Elsewhere one at Swanton Great Wood on 27th August 2019.

female Limnephilus affinis, Swanton Great Wood, 27th August 2019

Limnephilus affinis, North Elmham, 12th September 2019

female Limnephilus affinis, North Elmham, 29th September 2019

female Limnephilus affinis, North Elmham, 20th October 2019

male Limnephilus affinis, North Elmham, 12th September 2020

female Limnephilus affinis, North Elmham, 9th November 2020

Limnephilus incisus - None.  I've not seen this species but it does occur in Norfolk with small numbers of widespread records.


Limnephilus rhombicus - 5 singles caught in the garden between 15th July and 2nd September 2019 and 7 between 19th July and 20th August 2020.  Apparently much commoner next door as I caught 5 there on the only 4 nights I trapped there (7th to 10th August 2019).  Also 4 at the meadows and one at Hellesdon.

Limnephilus rhombicus, North Elmham Cathedral Meadows, 4th August 2019

Limnephilus rhombicus, North Elmham Cathedral Meadows, 22nd August 2019

male Limnephilus rhombicus, North Elmham Cathedral Meadows, 18th July 2020

male Limnephilus rhombicus, North Elmham, 19th July 2020

Limnephilus flavicornis - 42 trapped in the garden between 7th June and 11th October 2019 and 37 between 3rd June and 24th October 2020, these totals being slightly less that I caught here in 2018.  Elsewhere 10 at the meadows, one at Whitwell Street and one at Hellesdon.  There are always considerably more in the autumn period (peaking mid August to mid October, especially September) than in the early summer period (peaking June to mid July).

female Limnephilus flavicornis, North Elmham Cathedral Meadows, 23rd June 2019

male Limnephilus flavicornis, North Elmham, 4th July 2019

Limnephilus flavicornis, North Elmham Cathedral Meadows, 22nd August 2019

female Limnephilus flavicornis, North Elmham, 22nd September 2019

male Limnephilus flavicornis, North Elmham, 26th September 2019

female Limnephilus flavicornis, North Elmham, 14th June 2020

male Limnephilus flavicornis, North Elmham, 24th September 2020

Limnephilus flavicornis, North Elmham, 26th September 2020

male Limnephilus flavicornis, North Elmham, 16th October 2020

Limnephilus lunatus - This is easily the commonest caddisfly here and I caught a total of 595 in the garden trap between 4th June and 19th December 2019 and 624 between 30th May and 21st December 2020 (the last being my latest ever).  Maximum counts in each year were 47 on 23rd September 2019 and 34 on 22nd September 2020.  Elsewhere 3 next door, 104 at the meadows including 25 to LED lights on 15th September 2019 and 20 on 8th September 2020, and 1-2 at Swanton Great Wood, Whitwell Street, Hellesdon, Weybourne and Row Heath (West Runton).  Also singles on 6 out of 7 nights trapping at Tresidder in Cornwall in early October 2020.

female Limnephilus lunatus, North Elmham, 21st June 2019

Limnephilus lunatus, North Elmham Cathedral Meadows, 22nd August 2019

Limnephilus lunatus, North Elmham, 1st November 2019

Limnephilus lunatus, North Elmham Cathedral Meadows, 24th November 2019

Limnephilus lunatus, North Elmham, 30th May 2020

Limnephilus marmoratus - a total of 11 trapped here between 5th June and 22nd September 2019 and 13 between 7th June and 2nd October 2020 - both considerably lower totals than in 2017 abnd 2018.  Elsewhere singles next door, at the meadows, Bintree Wood, Whitwell Street and Hellesdon.

female Limnephilus marmoratus, North Elmham, 5th June 2019

Limnephilus marmoratus, North Elmham, 6th August 2019

male Limnephilus marmoratus, North Elmham, 7th September 2019

male Limnephilus marmoratus, North Elmham, 6th June 2020

female Limnephilus marmoratus, North Elmham, 4th August 2020

male Limnephilus marmoratus, North Elmham, 22nd September 2020

male Limnephilus marmoratus, North Elmham, 27th September 2020

Limnephilus politus - None.  I'm yet to find this species but there are a scattering of records in Norfolk so it might crop up here at some point.


Limnephilus binotatus - One in the garden trap on 16th May 2019 was only my second here following one in 2016.  Elsewhere caught at the meadows on 22nd April and 25th and 31st May 2019.  None recorded in 2020.

female Limnephilus binotatus, North Elmham Cathedral Meadows, 22nd April 2019

male Limnephilus binotatus, North Elmham, 16th May 2019

male Limnephilus binotatus, North Elmham Cathedral Meadows, 25th May 2019

Limnephilus decipiens - One caught in the garden on 7th October 2019 but none in 2020.  I had 2 here in 2018 and one the year before.

male Limnephilus decipiens, North Elmham, 7th October 2019

Limnephilus bipunctatus - None.  I'm yet to record this species but it occurs in Norfolk, albeit thinly spread, so it's one to look out for.


Limnephilus elegans - one to light at Teanga Brideig on Mull on 13th June 2019.  This species is rather rare in the east of England but I had one in the garden here in 2018 which was apparently only the second or third record in Norfolk.

male Limnephilus elegans, Teanga Brideig (Mull), 13th June

Limnephilus griseus - None.  I found this species at 2 locations in the Brecks/Fens in 2016 when I first started looking at caddisflies seriously, so got the impression it was commoner than it is - I haven't seen any since.  Looking at the NBN Atlas it looks like it may not have been recorded in the Wensum Valley, so I may have to be lucky to find one locally.


Limnephilus luridus - None.  Another one that has a scattering of records from Norfolk but which I've not come across yet.


Next page: more Limnephilidae

Or return to Caddisfly index

Field Grasshopper, new for the moth trap

The night of Friday 21st July was another good one with 109 species recorded at home.  These included another New Poplar Pigmy Ectoedemia hannoverella, my third this summer - surprising for a species that has never been recorded further north than this in Norfolk at all, not even by its leaf-mines which are usually the easiest way to record Ectoedemia species.  This one was much more worn so I wouldn't have been confident about the ID without recognising the genitalia (though there were enough scales left on it for me to suspect the correct ID).

* Edit 2018: OK, a bit too surprising.  I got a bit more suspicious after having another in 2018 - all these records seem a lot for a Poplar-feeding species given the distance from here to the nearest Poplars.  Having looked into it a bit more it now seems possible - indeed likely - that they are not hannoverella but Spotted Black Pigmies Ectoedemia subbimaculella.  I cannot rule out hannoverella, nor the Holm-Oak species heringella as both the external appearance and the genitalia are very similar between all 3 species, but as there is an Oak tree close by (subbimaculella feeds on Oak) and no Poplar or Holm-Oak very close I think subbimaculella is most likely.  Not entirely sure why I overlooked this as a possibility - probably because most of the photos online show much better patterned individuals than any of mine.

Five new species for the year were also small micros - Brown Birch Slender Parornix betulae, White Oak Midget Phyllonorycter harrisella, Garden Midget Phyllonorycter messaniella, Gold-ribbon Argent Argyresthia brockeella and Golden Argent Argyresthia goedartella.

Brown Birch Slender Parornix betulae (male, gen det), North Elmham, 21st July 2017

A count of 14 Horse Chestnut Leaf-miners Cameraria ohridella was twice my previous best for my garden trap - I'm sure I wouldn't have to go far to find its foodplant but there's none in the immediate vicinity so far as I know.

The other micros were Carrion Moth Monopis weaverella, Oak Bent-wing Bucculatrix ulmella, Common Oak Midget Phyllonorycter quercifoliella, Red Hazel Midget Phyllonorycter nicellii, Willow Bent-wing Phyllocnistis saligna, 24 Bird-cherry Ermines Yponomeuta evonymella, Common Oak Case-bearer Coleophora lutipennella, Little Dwarf Elachista canapennella, 4 Golden-brown Tubics Crassa unitella, Small Dingy Tubic Borkhausenia fuscescens, 2 Brown House Moths Hofmannophila pseudospretella, 6 Long-horned Flat-bodies Carcina quercana, Common Flat-body Agonopterix heracliana, 5 Cinereous Groundlings Bryotropha terrella, Gorse Crest Brachmia blandella, Four-spotted Obscure Oegoconia quadripuncta, 6 Dingy Dowds Blastobasis adustella, Common Cosmet Mompha epilobiella, Hawthorn Cosmet Blastodacna hellerella, Hook-marked Straw Moth Agapeta hamana, 4 Dark Fruit-tree Tortrixes Pandemis heparana, 2 Light Brown Apple Moths Epiphyas postvittana, Red-barred Tortrix Ditula angustiorana, Grey Tortrix Cnephasia stephensiana, Dover Shade Cnephasia genitalana, Maple Button Acleris forsskaleana, Dark-triangle Button Acleris laterana, Garden Rose Tortrix Acleris variegana, Common Marble Celypha lacunana, 3 Common Cloaked Shoots Gypsonoma dealbana, Summer Rose Bell Notocelia roborana, Large Beech Piercer Cydia fagiglandana, 3 Marbled Piercers Cydia splendana, 9 Garden Grass-veneers Chrysoteuchia culmella, 2 Grass-veneers Crambus pascuella, 26 Pearl Veneers Agriphila straminella, 6 Common Grass-veneers Agriphila tristella, 2 Pearl Grass-veneers Catoptria pinella, Water Veneer Acentria ephemerella, Common Grey Scoparia ambigualis, 2 Little Greys Eudonia lacustrata, 7 Small Greys Eudonia mercurella, 2 Garden Pebbles Evergestis forficalis, Elder Pearl Anania coronata, 2 Pale Straw Pearls Udea lutealis, 2 Dusky Pearls Udea prunalis, 17 Mother of Pearls Pleuroptya ruralis, 6 Rosy Tabbies Endotricha flammealis, 8 Grey Knot-horns Acrobasis advenella, Brown Plume Stenoptilia pterodactyla and Common Plume Emmelina monodactyla.

Oak Bent-wing Bucculatrix ulmella (male, gen det), North Elmham, 21st July 2017

Red Hazel Midget Phyllonorycter nicellii (male, gen det), North Elmham, 21st July 2017

Large Beech Piercer Cydia fagiglandana, North Elmham, 21st July 2017

Among the macros Copper Underwing and 2 Fen Wainscots were new for the year.

Copper Underwing (male, gen det), North Elmham, 21st July 2017

Fen Wainscot, North Elmham, 21st July 2017

The other macros were 4 Chinese Characters, Buff Arches, 3 Blood-veins, Least Carpet, 3 Small Fan-footed Waves, Dwarf Cream Wave, 8 Single-dotted Waves, 2 Dark-barred Twin-spot Carpets, Large Twin-spot Carpet, 2 Common Carpets, Yellow Shell, Lime-speck Pug, Wormwood Pug, 2 Currant Pugs, 3 Double-striped Pugs, Yellow-barred Brindle, Magpie Moth, 2 Clouded Borders, Scorched Carpet, 2 Brimstone Moths, Early Thorn, Scalloped Oak, Swallow Prominent, 2 Yellow-tails, 3 Rosy Footmen, 14 Dingy Footmen, 3 Scarce Footmen, 2 Buff Footmen, 7 Common Footmen, 3 Buff Ermines, 2 Ruby Tigers, 2 Shuttle-shaped Darts, 3 Large Yellow Underwings, Lesser Broad-bordered Yellow Underwing, Setaceous Hebrew Character, Double Square-spot, 5 Nutmegs, 2 Smoky Wainscots, Dun-bar, 4 Dark Arches, Cloaked Minor, Common Rustic, Lesser Common Rustic (plus 2 Common Rustic aggs. that escaped), 3 Uncertains, 2 Rustics, Cream-bordered Green Pea, 4 Nut-tree Tussocks, 2 Straw Dots and 3 Snouts.

A Field Grasshopper in the trap was, perhaps surprisingly, a species I'd not recorded in the garden before.

Field Grasshopper, North Elmham, 21st July 2017

There were 3 species of mayfly: 2 Pond Olives Cloeon dipterum, Lake Olive Cloeon simile and Blue-winged Olive Serratella ignita. Having the recent experience of catching relatively large numbers of Cloeon dipterum and seeing both sexes moulting from sub-imago to imago increaesd my confidence in identifying mayflies but with no subsequent records of Cloeon simile until now I'd started to wonder about some of my older records of that species.  At some point I'll check my photos but at least I now know that this species definitely does occur here sometimes.

Lake Olive Cloeon simile, North Elmham, 21st July 2017

A good number of green lacewings too, if not a huge variety: 5 Cunctochrysa albolineata, 16 Dichochrysa flavifrons and Dichochrysa prasina. Caddisflies consisted of 3 Hydropsyche siltalai, Medium Sedge Goera pilosa, Limnephilus flavicornis, 2 Athripsodes aterrimus and Ceraclea dissimilis.

Limnephilus flavicornis (male), North Elmham, 21st July 2017

I had to dissect it to figure out what it was but eventually identified this leafhopper as Alebra albostriella, a new species for me.

Alebra albostriella (male, gen det), North Elmham, 21st July 2017

Other bugs were the mirid bugs Lygus pratensis (new for the year) and Pinalitus cervinus and the leafhoppers Iassus lanio and Lamprotettix nitidulus.

Pinalitus cervinus, North Elmham, 21st July 2017

Two beetles were new for the house (not that I would have identified them prior to this year): the water beetle Ilybius ater and the click beetle Stenagostus rhombeus.  Other beetles were the Sexton beetle Nicrophorus investigator, 3 Aphodius rufipes and a Harlequin Ladybird.

 Ilybius ater, North Elmham, 21st July 2017

Stenagostus rhombeus, North Elmham, 21st July 2017

Last year when the next door neighbour's grandson was staying I loaned them my spare trap and went round in the mornings to go through it with them.  He evidently enjoyed it and popped round to see if I would do it again this year, which of course I was delighted to do.

A good variety of macro moths kept him entertained inlcuding Pebble Hook-tip, Large Emerald, Blood-vein, Small Blood-vein, Single-dotted Waves, Riband Waves, 3 Magpie Moths, 2 Clouded Borders, Brimstone Moth, Canary-shouldered Thorn, Early Thorn, Scalloped Oak, 2 Willow Beauties, Rosy Footman, Buff Ermines, 2 Ruby Tigers, Flame Shoulder, 2 Large Yellow Underwings, Clay, Dun-bar, Dusky Sallow, Uncertains, Rustics, Nut-tree Tussocks and Straw Dot.

I didn't attempt to keep a complete count or list of every species but the micros I noted were Clover Case-bearer Coleophora alcyonipennella, Yarrow Conch Aethes smeathmanniana, Cnephasia sp., Maple Button Acleris forsskaleana, Garden Grass-veneers Chrysoteuchia culmella, Grass-veneers Crambus pascuella, Yellow Satin Veneer Crambus perlella, Pearl Veneers Agriphila straminella, Common Grass-veneers Agriphila tristella and Mother of Pearls Pleuroptya ruralis.