Review of 2019 and 2020 - Moths: Geometers (Geometridae) - part 3: Carpets II (Epirrhoe to Hydriomena)

GEOMETERS (GEOMETRIDAE) (continued)


Small Argent & Sable Epirrhoe tristata - On Mull, one west of Carsaig on 10th June 2019 and 2 along the road to Glengorm on 12th June.  This was the first time I've seen this non-Norfolk species in the UK.

Small Argent & Sable, west of Carsaig (Mull), 10th June 2019

Small Argent & Sable, Glengorm Road (Mull), 12th June 2019

Common Carpet Epirrhoe alternata - At least 40 caught in the garden between 25th May and 12th September 2019.  Not counted on 6 nights but with 1s and 2s around this time I doubt if the true figure was much higher than 40-50, so probably below average (about 60).  In 2020 67 between 21st May and 24th August, my second best total here in 6 years.  Elsewhere recorded next door, at the meadows (27 across 15 dates), and at Bintree Wood, Whitwell Street, Hills and Holes and Weybourne.

Common Carpet, North Elmham Cathedral Meadows, 22nd May 2019

Wood Carpet Epirrhoe rivata - One caught at home on 7th July 2019.  Until 2018 I was pretty skeptical about Wood Carpet records having noted a number of big pale-banded moths that I had taken to be extreme Common Carpets.  However in 2018 we found such a strong candidate for Wood Carpet at Derby Fen that I was forced to start taking them more seriously.  That individual was identified as Wood Carpet by a combination of features:

1. It was very big – forewing length of about 15.5 mm so outside the given range for Common Carpet and towards the upper end of the range even for Wood Carpet;
2. The white outer band on the forewing was broad, very white and with only very faint trace of a grey line dividing it through the centre (3-4 slightly more prominent grey dots near the leading edge but still faint);
3. The white outer band on the hindwing was similarly broad and white and lacked any grey dividing line;
4. Also the rear border of the white outer band on the forewing was very smooth (I’ve never seen this cited as a feature but it seems to be pretty consistent in most convincing photos of Wood Carpet online – Common Carpet nearly always having a more scalloped rear border to the white outer band on the forewing, at least when fresh).

That individual was a male, but although there are no known differences in male genitalia between the two species the consensus of opinion among all consulted was that this was indeed a Wood Carpet.  Two days later I caught another good candidate at home.  This was a female and although it is not clear that genitalia differences in females are consistent, there is a substantial difference between online images of female Wood Carpet genitalia and all the images I can find of female Common Carpet - and mine resembled the Wood Carpet's genitalia.  I caught one more apparent male at home a little while later and while not all of these 3 showed every character of Wood Carpet in perfection, I'm pretty much satisfied that that's what they all were.  If I'm right then I'm pretty sure that I've overlooked these in the past - the big pale-banded "Common" Carpets probably were Wood Carpets after all.  However, all this assumes that there are actually two clearly distinct different species, and I gather that isn't universally accepted.  Anyway, 2019's was another male, slightly worn and thus not as perfect as the Derby Fen individual but seems to me that it probably sits within the bounds of whatever Wood Carpets actually are.  None in 2020.

apparent Wood Carpet, North Elmham, 7th July 2019

Galium Carpet Epirrhoe rivata - None.  I'm yet to catch this species but there are a scattering of records in mid Norfolk so maybe I'll catch one some time.


Sharp-angled Carpet Euphyia unangulata - Only one trapped in the garden in 2019, on 23rd June.  I had been averaging over 5 a year and caught 3 in my previous worst year (2018).  2020 was better with 6 between 22nd June and 19th August.  Elsewhere 5 caught at the meadows, 5 at Bintree Wood and one at Hills and Holes.

Sharp-angled Carpet, North Elmham Cathedral Meadows, 23rd June 2019

Sharp-angled Carpet, North Elmham Cathedral Meadows, 7th July 2019

Sharp-angled Carpet, Bintree Wood, 13th June 2020

Sharp-angled Carpet, North Elmham, 22nd June 2020

Shoulder Stripe Earophila badiata - Totals of 5 trapped in the garden between 21st March and 24th April 2019 and 6 between 19th March and 11th April 2020.  5 is my worst annual total here - I've averaged 9 a year.  Elsewhere just 2 at the meadows on 20th March 2019.

Shoulder Stripe, North Elmham Cathedral Meadows, 20th March 2019

Shoulder Stripe, North Elmham, 24th April 2019

Shoulder Stripe, North Elmham, 9th April 2020

Streamer Anticlea derivata - Just 3 caught in the garden between 24th April and 19th May 2019 and 16 between 8th April and 9th May 2020.  These were my worst and second-best showings - apart from 23 in 2016 I've caugt 4-5 in the other years.  Elsewhere one at the meadows on 22nd April 2019.

Streamer, North Elmham Cathedral Meadows, 22nd April 2019

Streamer, North Elmham, 24th April 2019

Beautiful Carpet Mesoleuca albicillata - None.  I have only ever caught one of these, at my last place in Bawdeswell in 2010.  It was quite early in my mothing career and I don't think I realised quite how good it was at the time.  I look forward to the next one, hopefully here in North Elmham.


Dark Spinach Pelurga comitata - Singles caught in my garden on 8th August 2019 and 29th July 2020, then one at the meadows on 7th August 2020.  I'd only ever seen 3 before, all here (one in 2016 and 2 in 2018).

Dark Spinach, North Elmham, 8th August 2019

Dark Spinach, North Elmham, 29th July 2020

Dark Spinach, North Elmham Cathedral Meadows, 7th August 2020

Mallow Larentia clavaria - Totals of 6 trapped in my garden between 23rd September and 10th October 2019 and 11 between 21st September and 19th October 2020.  These were below par and 2019 was my lowest total so far.

Mallow, North Elmham, 21st September 2020

July Highflyer Hydriomena furcata - 5 caught in my garden between 6th July and 7th August 2019 was below average but 2 in 2020 (29th June and 11th July) was my worst year here so far.  I average 7 a year here but often catch a lot more at other sites - only 3 elsewhere in 2019/20 though, with singles at the meadows, Bintree Wood and Weybourne.

July Highflyer, North Elmham, 5th August 2019

July Highflyer, North Elmham, 29th June 2020

May Highflyer Hydriomena impluviata - One here on 25th May 2019 and 3 between 17th and 21st May 2020.  This species isn't quite annual here though I usually catch 2-3.  Also one at Sculthorpe Moor on 26th April 2019 and 2 at Hills and Holes on 21st May 2020.

May Highflyer, North Elmham, 25th May 2019

May Highflyer, North Elmham, 17th May 2020

Next page: more Geometridae

A trio of new moths including 9x Pammene giganteana to lure

The night of Tuesday 17th April was an excellent one with two moths in the trap that were completely new to me, Large Birch Purple Eriocrania sangii and Scarce Cosmet Mompha jurassicella.   I think I've seen sangii before but never been 100% certain about its identity previously.  There's been some debate about whether female sangii can be safely identified by reference to its genitalia but I think the consensus seems to be that the combination of the form of the scales on the hindwing and the relative sizes of the sensoria on its abodomenal sclerites is sufficient.

Large Birch Purple Eriocrania sangii (female), North Elmham, 17th April

Scrace Cosmet Monpha jurassicella (male, gen det), North Elmham, 17th April

There was a reasonable selection of other moths too: 3 Common Flat-bodies Agonopterix heracliana, 2 Common Plumes Emmelina monodactyla, Frosted Green, 2 Brindled Pugs, 3 Double-striped Pugs, 2 Early Thorns, Brindled Beauty, 4 Common Quakers, Clouded Drab, 3 Hebrew Characters, Early Grey and Chestnut.

There were 3 Chrysoperla carnea (green Lacewings) (at least 2 confirmed males and a presumed female).  Interestingly the female was fully green while all the males I've seen so far this year have still had some of their winter brown colour retained.  There were also 2 different brown Lacewings, and surprisingly both proved to be new species for the garden, Hemerobius micans and Wesmaelius nervosus.

Hemerobius micans, North Elmham, 17th April

Wesmaelius nervosus, North Elmham, 17th April

The following day I headed out to the east coast where there were plenty of butterflies on the wing including Peacocks, Small Tortoiseshell and Brimstone.

Brimstone, Horsey, 18th April

I think this spider was Pardosa nigriceps, a new one for me.

Pardosa nigriceps, Horsey, 18th April

On the way home I stopped at St Faith's Common where insect-life included a new beetle for me, Hylurgops palliatus.

Hylurgops palliatus, St Faith's Common, 18th April

At Bittering while retrieving some algae covered oak bark to feed my Luffia ferchaultella on (see last post) I unwittingly also retained this tiny creature - but it took mne a while to work out what it is, and I'm still not sure.  I considered it could be an aphid, but I don't think so, or perhaps one of the globular springtails though I haven't seen it spring (and do any of the collembola live on trees anyway?).  A nymph of some kind of bug perhaps?  In the end I think it's most likely to be the larva of a Lacewing, but I'm not entirely sure.  I've seen green lacewing larvae covered in muck before and that was significantly larger (this was only about 1-2 mm long at most).  I guess it could be one of the smaller brown lacewings, although some photos of these show much more elongated creatures, or perhaps even one of the Waxflies?  I'm not entirely clear if all of these cover themselves in material to camouflage themselves or if it's just the larger species?  On the other hand I thought all lacewing larvae were carnivorous yet this is surviving in a pot with only some algae-covered bark for company for 12 days so far and it still seems very healthy, so perhaps it is something else entirely...?  Please let me know if you have any ideas!

unidentified insect, Bittering, 18th April

That night a good selection of moths included 4 that were new for the year: Maple Slender Caloptilia semifascia, Many-plumed Moth Alucita hexadactyla, Pine Beauty and Nut-tree Tussock. The Pine Beauty was particularly welcome being my first here since 2015.

Maple Slender Caloptilia semifacscia, North Elmham, 18th April

Many-plumed Moth Alucita hexadactyla, North Elmham, 18th April

Pine Beauty, North Elmham, 18th April

Nut-tree Tussock, North Elmham, 18th April

Other moths caught that night were Common Plume Emmelina monodactyla, Frosted Green, 4 Brindled Pugs, 2 Double-striped Pugs, 3 Early Thorns, 2 Brindled Beauties, 3 Small Quakers, 5 Common Quakers, 5 Clouded Drabs, 7 Hebrew Characters, Early Grey and 2 Chestnuts.  There were also 2 Chrysoperla carnea and a Black Sexton Beetle.  A good crop of leafhoppers consisted of 5 Empoasca vitis and, new for the year, Zygina angusta.

Zygina angusta, North Elmham, 18th April

I recently acquired a pheromone lure for the tortrix moth Grapholita lobarzewskii.  Jon had been trialling this in his garden last year and caught Norfolk's first example of this moth previously only known from the south east.  It's too early in the year for a lobarzewskii but I put it out on Thursday 19th April knowing that these lures sometimes attract other species too.  I checked the trap that evening and was delighted to find a tortrix moth inside - not a lobarzewskii of course, but whatever it was looked interesting.  Sure enough it proved to be a new species for me and one that's only been recorded a handful of times in the county, Early Oak Piercer Pammene giganteana.

Early Oak Piercer Pammene giganteana, North Elmham, 19th April

My third new moth in as many days - what had until this week been a dire year for moths has suddently started turning more interesting!

That night Streamer and Lunar Marbled Brown were new for the year.

Streamer, North Elmham, 19th April

Lunar Marbled Brown, North Elmham, 19th April

Other moths included 3 Common Flat-bodies Agonopterix heracliana, 2 Common Plumes Emmelina monodactyla, Frosted Green, Water Carpet, 4 Brindled Pugs, Double-striped Pug, 2 Early Thorns, 5 Brindled Beauties, 2 Small Quakers, 2 Common Quakers, 5 Clouded Drabs, 8 Hebrew Characters and Chestnut.

Next day I put the lobarzewskii lure out again and this time I caught another 2 Early Oak Piercers Pammene giganteana - amazing!

Early Oak Piercer Pammene giganteana, North Elmham, 20th April

If 3 in 2 days was good, there was more in store... I tried one more time on 21st and when I checked the trap that evening there were another 6 Early Oak Piercers Pammene giganteana in there!  There were only 10 previous records of giganteana in Norfolk so catching 9 in 3 days seems quite remarkable - but such is the power of a pheremone lure for finding things that I'm sure are always around and just not tending to come to light very often and are therefore rarely recorded.  Interestingly Mick Kerr managed to attract a giganteana to the same lure at Sporle near Swaffham too.

And then it all happened...

Mothing at home this year has been fairly uneventful with no new moths for the house until Thursday night.  Recently numbers have picked up but variety has remained low - even new moths for the year have been hard to come by.  Then Thursday night happened.

The clear highlight was a Grey Pine Ermel Ocnerostoma friesei - a tiny grey moth that isn't much to look at but is a great record, and my first.  There are just five previous Norfolk records, all from 2011 and 2014 and all from one observer and one location (Dersingham).

Grey Pine Ermel Ocnerostoma friesei (male, gen det), North Elmham, 30th March

Another good moth was Scarce Alder Slender Caloptilia falconipennella - my second ever (excluding the one I mentioned in my last blog post - I don't count moths if they're brought to me) and first for my garden.

Scarce Alder Slender Caloptilia falconipennella (male, gen det), North Elmham, 30th March

In the same genus and also new for the year and one I've not seen many times before was White-triangle Slender Caloptilia stigmatella.

White-triangle Slender Caloptilia stigmatella, North Elmham, 30th March

Another one I've not often seen and hadn't caught here since 2015 was Pale Pinion.

Pale Pinion, North Elmham, 30th March

I also missed Water Carpet at home last year, although I see plenty of them elsewhere.  Good to get it on the garden year list.

Water Carpet, North Elmham, 30th March

I always enjoy my first Purple Thorn of the year.  The photos taken using flash (first two) showed the warmth of the colours well but I noticed they didn't show the white lunar marks as clearly as they looked in life (especially on the upper hindwing), so I took a couple of photos without using flash too (bottom two).

Purple Thorn, North Elmham, 30th March

Everyone loves a Streamer - another new species for the year.

Streamer, North Elmham, 30th March

More routine new species for the year were Many-plumed Moth Alucita hexadactyla and Double-striped Pug.

Many-plumed Moth Alcuita hexadactyla, North Elmham, 30th March

Double-striped Pug, North Elmham, 30th March

Other moths in the trap were 2 Common Flat-bodies Agonopterix heracliana, 2 Common Plumes Emmelina monodactyla, Brindled Pug, 3 Early Thorns, 4 Small Quakers, 5 Common Quakers, 9 Clouded Drabs, 9 Hebrew Characters and 4 Early Greys.  Also 3 Black Sexton Beetles, what looked like another Ophion scutellaris (Ichneumon) and 3 Green Lacewings (my first here this year) at least one and probably all 3 of which were Chrysoperla carnea.

Friday night was back to more or less normal with a few moths of mainly the same species as normal, although Brindled Beauty was a nice addition to the garden year list.

Brindled Beauty, North Elmham, 31st March

The others were Water Carpet, 2 Early Thorns, Small Quaker, 3 Clouded Drabs, 9 Hebrew Characters and 2 Early Greys. Also a couple of Black Sexton Beetles.