Category: Biology

People often talk of liking butterflies but disliking moths. Butterflies are to all intents and purposes scientifically speaking, a sub-group within the moths. Arguments about flying at night, about clubbed antennae, and regarding wing posture are moot.

There are both moths and butterflies that are diurnal and others that are nocturnal. Indeed, there is sexual dimorphism in some species, e.g. Emperor moth, which looks “like a butterfly” and the males fly during the day and the females at night.

There are examples of clubbed antennae in moths and hooked antennae in butterflies (Skippers for example, which are borderline between moth and butterfly in the broadest descriptions).

There are countless moths that lie flat and many that fold their wings like butterflies purportedly do but there are butterflies that lie flat too.

The distinction is fundamentally one of linguistics in that English has Latin and Anglo-Saxon roots and so often has duel words for everyday things (mushrooms & toadstools, frogs & toads, tortoises and turtles), whereas in non-dualling languages on the continent from whence the Romans and the Saxons came, there’s no such distinction.

Anyway, words are words, these are beautiful living creatures worth our respect and given that there are 1800 different species of Lepidoptera (scaly-winged insects) in the British Isles, there’s a lot of diversity.

I have written about the Hawk-moths (Sphingidadae) several times during my short time mothing with an actinic lure in our back garden. We have seen a fair selection of the species present in the British Isles. My photos are in the HM section of my Mothematical Gallery.

So far in 2020, Lime HM, Eyed HM, and Poplar HM have made appearances. Morning of 19 May 2020, a new one for the garden – Pine Hawk-moth,  Sphinx pinastri (Linnaeus, 1758).

Not quite as active a night in nor around the actinic lure as it gradually got windier. But, still a reasonable number of specimens seen and a couple more NFYs.

Of interest a leucistic male Muslin, Tawn/Marbled Minor agg (NFY), Willow Beauty (NFY).

Also showing up Flame Shoulder, Common Pug(2), Bee Moth, Waved Umber, H&D, SSD, and non-aberrant male Muslin.

I tried to get an open-wing shot of the Pale Prominent sat on my stone staging, but it hopped off quickly and disappeared. Saw it on my office carpet a couple of hours later, let it fly to the window…got a sort of open-wing shot, but it was too flitty for focus.

 

Thank goodness for mothing…it’s certainly a distraction from the bleak outlook and political bullshine of the coronavirus, Covid-19 debacle. Thing is for much of this year, there haven’t been many moths drawn to actinic light lures that I’ve heard off. Lepidopterists on the various lep Facebook groups and around our county here have been reporting low number and low diversity.

However, that changed somewhat for my lure on the night of the 75th Anniversary of VE-Day. I’d spent much of the time handling virtual online events, such as my #FEVEG20, but by the evening, just after dark and after a couple of celebrater sherbets, the light lure beckoned.

It was a still, balmy evening, it had dropped from 24 degrees to around 15 Celsius at 23h00 and there was quite a bit of activity around the lure. flies, parasitic wasps, Bee Moths, Pugs, a Brimstone…a Pale Tussock, and more. There was a stunningly white with black spots, female Muslin on a California poppy stem next to the pond 5 metres away from the actinic. Intriguingly, some of the moths were more drawn to a bright LED panel I was using to have a quick look at the frogs in the pond (only one of the two has been visible this last week, #PondLife). No sign of any Box-tree Moth, the notoriously virulent beast from the East. They will emerge soon, I have warned neighbours who have planted a Box hedge that they could see it ravaged. They make nice hedges but now that this invasive species taking hold across various parts of the country, those hedges will succumb.

Anyway, the Pale Tussock had been joined by another by morning in the collecting box, there were more pugs, more Bee Moths, and a couple more Brimstone (not to be confused with the Brimstone butterfly). Here’s the full list of the Saturday morning haul; NFY = New for year:

Bee Moth (3), Brimstone (3), Common Pug (4), Cream-bordered Garden Pea (NFY), Argyrotaenia ljungiana (NFY), Eudonia angustea (NFY), Female Muslin, Flame Shoulder (NFY), Freyer’s Pug (NFY), Garden Carpet (2), Grey/Dark Dagger agg (NFY), Heart and Dart (2), Light-brown Apple Moth (2), male Muslin, Notocelia cynosbatella (NFY), Pale Tussock (2, NFY), Rustic Shoulder-knot (NFY, deceased), Shuttle-shaped Dart (12), Waved Umber.

Still hearing from others that they are hardly seeing any moths and yet some people with mercury vapour lures elsewhere in the country are seeing a whole lot more.

Mrs Sciencebase spotted this fellow roosting in the garden last night…it was the moth that was roosting, not Mrs Sb. It’s a Purple Thorn. So-called because the larva (caterpillar), which is stick-like in appearance has a spiky projection and the adult has a purple hue to its wings.

Its scientific name (binomial) is Selenia tetralunaria. It has four white crescent moon shapes on its wings, hence the tetralunaria of its binomial. Selenia is the genus and there are a couple of dozen of this type of moth around the world, a fraction of the 180,000 different known moths (and butterflies, same thing)