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Tag Archives: moth caterpillars

Cool cats, 2

05 Thursday Jun 2025

Posted by sconzani in insects

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Tags

British moth caterpillars, caterpillars, Common quaker caterpillar, Lackey caterpillar, moth caterpillars, moth larvae, Mottled umber caterpillar, Ruby tiger caterpillar, Vapourer caterpillar

When I’m out walking at this time of year, I always keep a look out for leaf damage as that’s often the way to find invertebrates, whether they be weevils or beetle larvae or moth caterpillars or many other things. Today I thought I’d share some of the cool caterpillars I’ve been finding, most of which are relatively common and easy for everyone to identify. (I’ve linked each name to the relevant page on the UK Moths website so the curious amongst you can see what these cats will look like as moths; it always amazes me how different the adults are from their progeny.)

Having said that most of these are relatively common, I’d never actually seen a Common quaker (Orthosia cerasi) caterpillar before but found several recently on one Oak tree. Judging by how plump they were, all had been feeding well, and would be pupating quite soon after I saw them.

As you can perhaps see in my photo, this Lackey (Malacosoma neustria) caterpillar had just moulted (that’s the shed skin on the leaf next to it) and so was looking very vibrant. The Lackey is mostly found in southern parts of Britain and is a good example of how different the adult is – really quite drab.

Do these Mottled umber (Erannis defoliaria) caterpillars think their twig impression will deter hungry birds? Perhaps so. Judging by the fact that I spotted more than 20, of varying sizes and with slight colour variations, on a group of Lombardy poplar trees, their disguise was working.

I have to admit that I wasn’t the first to spot this lovely little Ruby tiger (Phragmatobia fuliginosa) heading purposefully across a local footpath. A young boy, who was out with his parents and their dog, had seen it and was trying, unsuccessfully, to feed it Dandelion leaves.

You may recall that, back in January, I blogged about finding a Vapourer cocoon and eggs. Well, though I found this particular caterpillar in a different place entirely, this is what would eventually have emerged from those eggs, the wonderfully flamboyant caterpillar of a Vapourer moth (Orgyia antiqua).

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Box tree moth cats

02 Thursday May 2024

Posted by sconzani in insects, plants

≈ 2 Comments

Tags

Box moth, Box tree moth, Buxus sp, caterpillars on Box, Cydalima perspectalis, invasive non-native, moth caterpillars

A few days ago, our local moth expert posted a fascinating thread on Twitter/X about the population explosion of the non-native invasive Box tree moth (Cydalima perspectalis) in Cardiff. As George noted, this moth was first recorded in Kent, England in 2007, and spread rapidly across the southern counties of England before arriving in Cardiff in 2018. George runs a regular moth trap in his garden and, though the moth didn’t appear in his trap until 2020, by 2023 it had become the most common species he trapped.

240502 box tree cats (2)

This rapid escalation in adult moths means, of course, that there has also been a huge increase in the numbers of moth caterpillars and, as a result, Box bushes and hedges are being decimated by the caterpillars’ voracious appetites. George talked about ‘widespread defoliation’ in Cardiff so I went looking at a location nearer to home where I knew there was a Box hedge. It wasn’t quite as bad as the reports from north Cardiff and there was quite a lot of new growth on the bushes but there were also huge numbers of caterpillars munching their way through the foliage. I imagine it’s only a matter of time before this hedge has been totally stripped of leaves.

240502 box tree cats (1)

It’s such a shame that the Box tree moth is so destructive as both the adult moth and the caterpillars are very attractive creatures. Apparently, many gardeners are already removing Box from their gardens so any gardeners out there, be aware, your Box (Buxus species) will be targeted by this moth when it spreads to your area.

240502 box tree cats (3)

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M is for moth

18 Monday Dec 2023

Posted by sconzani in insects

≈ 2 Comments

Tags

#MothsMatter, British moths, moth caterpillars, moth larvae, moths

With their intricate patterns and superb colour combinations, I think it’s true to say that moths are amazing! To showcase how visually stunning they are, I’ve pulled together a slideshow of some of the moths, and their larvae, I’ve encountered during 2023. Enjoy!

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Caterpillars in November

16 Wednesday Nov 2022

Posted by sconzani in autumn, insects

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Knot grass larva, Knot grass moth, moth caterpillars, moth larvae, Noctiud caterpillar

Though I know many Lepidoptera over-winter as caterpillars, and this has been a particularly mild November as well, it was still a surprise to see these two caterpillars on one of my recent walks. From previous sightings, I knew that the black, red and white hairy beastie was the larva of a Knot grass moth (Acronicta rumicis) but I didn’t recognise the other one. One of my Twitter pals was able to tell me it’s one of the Noctuid species of moths but wasn’t able to be more specific, but I’ve just ordered a book I’ve long desired, The Field Guide to Caterpillars of Great Britain and Ireland, so will hopefully be able to update this post soon.

221116 noctuid sp knot grass

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Cool cats

19 Thursday May 2022

Posted by sconzani in insects

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Tags

butterfly caterpillars, butterfly larvae, caterpillars, larvae, moth caterpillars, moth larvae, sawfly caterpillars, sawfly larvae

Butterflies, moths, sawflies – all have larvae that look like caterpillars, cats. It’s that time of year when I feel compelled to check any leaves with holes to try to find the hole-maker, and so I’m finding lots of cool cats. These are just a few of the recent leaf-munchers I’ve discovered, some I can identify, some I can’t but that’s not always important: Lackey, unknown, Mirificarma lentiginosella, unknown, unknown, Drinker, Orange-tip, and Copper underwing.

220519 caterpillars

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Small and hairy

09 Monday May 2022

Posted by sconzani in insects

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Tags

British moths, caterpillars in a web, Lackey, Lackey caterpillars, Lackey larvae, Malacosoma neustria, moth caterpillars, moth larvae

In Saturday’s post we had the small and scary (if you don’t like spiders – personally, I thought they were adorable); today we have the small and hairy, a web of Lackey moth caterpillars (Malacosoma neustria), which can often be found at this time of year, their web wrapped around the twigs of various broadleaved trees and shrubs.

220509 lackey (1)

The early instar (youngest) larvae don’t show the blue side stripe or ghoulish face, which make these larvae so distinctive as they grow.

220509 lackey (2)

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Winter caterpillars

15 Saturday Jan 2022

Posted by sconzani in insects, winter

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Tags

Angle shades caterpillar, Angle shades larvae, moth caterpillars, moth larvae, moth larvae in winter, Phlogophora meticulosa

These were a surprise on a chilly and very foggy early morning walk earlier this week.

220115 caterpillar (1)
220115 caterpillar (2)
220115 caterpillar (3)
220115 caterpillar (4)

I suppose I should have realised that some caterpillars overwinter as larvae but I was still amazed to find all but one of these four sitting in plain sight, fully exposed to the weather, covered in dew drops. I’m reliably informed these are the larvae of the Angle shades moth (Phlogophora meticulosa).

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Pillars of the insect community

30 Thursday Sep 2021

Posted by sconzani in insects

≈ 8 Comments

Tags

British insects, moth caterpillars, moth larvae, mystery caterpillars, mystery larvae, sawfly caterpillars, sawfly larvae

To showcase their diversity, in colour, size, shape, pattern, habits and hairiness, I’ve been gathering photos of these (cater)pillars of the insect community, the larvae of moths, sawflies, and some mysteries, which could be one of these … or something other. Here they are:

210930 moth 5-spot burnet
210930 moth drinker
210930 moth maiden's blush

Moths: 5-spot burnet (Zygaena trifolii), Drinker (Euthrix potatoria), and the delightfully named Maiden’s blush (Cyclophora punctaria).

210930 sawfly Allantus sp
210930 sawfly Eriocampa ovata

Sawflies: a possible Allantus species (its identity cannot be confirmed as it was on the wrong plant), and the fluffy looking Eriocampa ovata.

210930 mystery (1)
210930 mystery (2)
210930 mystery (3)
210930 mystery (4)

Mysteries: if you can ID any of these, please leave a comment below. Thanks!

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Buff-tip larvae

18 Wednesday Aug 2021

Posted by sconzani in insects, nature

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Tags

British moths, Buff-tip moth, Buff-tip moth caterpillars, moth caterpillars, moth larvae, Moth larvae on Oak leaves

I’ve never seen a Buff-tip moth (Phalera bucephala) except in photographs (they look incredibly like twigs – see images on the Butterfly Conservation website here). But yesterday I found their larvae, lots of them, all huddled together on the top side and underside of an Oak leaf.

210818 buff tip moth larvae (1)

The adult moth, which flies from May to early August, lays clusters of eggs under the leaves of the trees their caterpillars feed on, which, as well as Oak, include Hazel and the various birches and sallows, amongst others.

210818 buff tip moth larvae (2)

The larvae hatch out after 2-3 weeks and start eating. It takes just a month for them to go through their four instars, after which they move down into the ground to pupate. Come the spring, the whole process begins again.

210818 buff tip moth larvae (3)

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About me

sconzani

sconzani

I'm a writer and photographer; researcher and blogger; birder and nature lover; countryside rambler and city strider; volunteer and biodiversity recorder.

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