Tuesday night was wet, windy and weirdly warm. Weather maps suggested the blow
originated far to the south, so obviously I fantasised about the vagrant moths
to come. Not to me probably, but, well...hopeless optimism is a mostly
harmless vice.
The day dawned dry and fairly calm. Barred Sallow was an expected new
moth for the garden - there were three - but otherwise it was the same old,
same old. Shaking the inevitable handful of Lunar Underwings off an egg
tray I gave it a quick glance before stacking with the others. Hello...what's
this? A tiny sliver of sandy-coloured micro was still attached, crouched in a
hollow. Hmm...looks interesting. A quick photo, then pot. Surprise, surprise,
it was an Olive Spinner Zelleria oleastrella, a scarce migrant. There are just four previous Devon records. Funny how
things go - I had very nearly shaken it off into the garden. Thank goodness it
had a strong grip!
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Olive Spinner Zelleria oleastrella. 4 previous Devon records: 2021, 2023 and 2025 x2.
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In four years of garden mothing I have become increasingly convinced that it
would be difficult to name an activity more serendipitous. Luck, chance, fluke
- call it what you will - seems to me the name of the game. All you have to do
is buy a trap, stick it outside, switch it on, then wait and see what it
brings. It's like unwrapping presents every morning!
Back to Lunar Underwings. For some reason we are getting loads of them.
Friday night brought 77. In a bid to eliminate the possibility that each
night's total is somewhat cumulative because moths from previous catches are
still nearby and being caught again, I released most of that 77 far, far away.
Last night was cold and clear, and very few moths were in the trap by bedtime.
I was convinced that this morning's tally would be much smaller. Well, it
wasn't. There were 85! Still, that's a long way from the biggest count. The
night of 21st September brought 234 of the things! Meanwhile, I have been
patiently picking through them all in a quest to add Beaded Chestnut to
the garden list, a very similar moth. Finally, on Friday night it came. And in
the event, it stood out like a sore thumb. Having already checked 1,019
Lunar Underwings this autumn, I guess I had my eye in...
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Beaded Chestnut (left) and Lunar Underwing
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And last night, another...
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Beaded Chestnut #2 for the garden (top) in an egg tray this
morning with an identically-coloured Lunar Underwing.
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I visited the Devon Moths website to see what kind of numbers are typically
reported for Lunar Underwing. Well, unsurprisingly double-figure counts
are common, but I checked the last three years and failed to find any
three-figure counts. In addition to 234, we've also tallied 215 and 154. So,
why does our little 40W actinic attract so many here in Axminster? Is our
population of Lunar Underwings exceptionally large for some
reason? What's so special about this location?
Another moth which we have encountered quite often is a striking micro called
Carnation Tortrix. I say 'striking' but at first glance it is just a
small, chestnut-coloured job with subtle markings. However, in flight it
reveals bright orange hindwings...
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Carnation Tortrix Cacoecimorpha pronubana on the lid of
our trap, showing a hint of its bright orange hindwing.
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The Devon Moths website lists 123 records of this species. Mostly there are
less than 10 a year. So why have we had 27 records in our garden since May?
What's so special about this location?
Events like the two above convince me that virtually anywhere might
potentially be good for moths. Not all moths of course, but
likely there will be a relative abundance of something unexpected. Serendipity
again.
This morning I peered out of the kitchen window - as mentioned earlier I was
expecting a meagre catch - and spotted a single moth on the the lid of our
bucket trap. I could see it wasn't a Lunar Underwing and in fact looked
interesting. It turned out to be a Scarce Bordered Straw. A common
enough migrant, but only our second here. Opening the trap revealed more moths
than anticipated. On one of the lower trays, tucked in with the ubiquitous
Lunar Underwings was a moth I thought I recognised from Bridport, where
we trapped two in 2023 I think. Sure enough, it was a
Feathered Brindle...
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Feathered Brindle, a beautifully-marked moth.
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I recalled that Feathered Brindle was a fairly scarce moth
nationally-speaking, and a coastal specialist, but had no idea of the
situation in Devon. Once again the Devon Moths website provided the gen...
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Distribution of Feathered Brindle records in Devon. From the
Devon Moths website.
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There are 89 records up to the end of last year, but the vast majority are
clustered in South Devon. East Devon, where I live (in the eastern-most full
10km square) hasn't recorded a Feathered Brindle since 1976. Fifty
years! Once again...serendipity.
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The Scarce Bordered Straw I first saw through the kitchen window
this morning; #2 for the garden.
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Pristine Turnip Moth from Wednesday night.
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Small Mottled Willow. Another beautifully-marked brown thing.
Still coming...
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Barred Sallow. Bucking the brown-ness for a moment.
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Last weekend we were babysitting - and running the trap - in Lyme Regis. Since
our - and its - return to Axminster on Sunday evening, the moths have
delivered interest in spades. Conditions have mostly felt less than ideal, yet
we've had a couple of really nice scarcities, and what for us feel like decent
numbers too. Long may it continue...