Month: Jul 2020

Posted in Allotment, nature

Butterfly Numbers Flying High.

Posted on by BITM

With Buddleia, Lavender and Verbena bonariensis in full bloom at the moment butterfly sightings have increased significantly.

Along with plenty of Peacocks (Aglais io), Red Admirals (Vanessa atalanta) and Large whites (Pieris brassicae), I noticed a few other butterflies last week.

The first was a Gatekeeper (Pyronia tithonus) visiting Shasta daisies (Leucanthemum × superbum),

but I also saw a Comma butterfly (Polygonia c-album) pollinating some Verbena bonariensis too.

Along with these butterflies, the European gypsy moth (Lymantria dispar) reappeared, still under the Rhubarb patch on the allotment (see my ‘All you Need is Love and Nature.’ post from the 29th June 2020). However it was no longer a caterpillar but in the next stage of its life cycle, a pupa hanging from a Rhubarb leaf.

It can be in the Pupal stage for a fortnight so I will keep checking for its emergence as the adult moth, so I can hopefully see it take place. As I don’t exactly know when the Pupal stage began I’m not sure how soon it will occur. The male and female moths look very different so can be easily identified, plus the females don’t fly (see Butterfly Conservation); therefore if no moth is found then it was probably a male that has flown away.

The last insect that was noticeable last week was a Common red soldier beetle (Rhagonycha fulva).

It is always great to see these beetles as the are beneficial insects which predate aphids while their larvae eat
invertebrate pests, slugs and snails.

Posted in Allotment, nature

Spectacular Sighting

Posted on by BITM

Last week began with me spotting a Grey heron (Ardea cinerea), presumably trying to catch fish while standing in the local river, as I walked passed to the first job of the day.

Yet the rest of the week remained fairly quiet until Friday morning arrived.

This is when I saw a Swallow tail (Ourapteryx sambucaria) moth.

As the moth ages it’s cream coloured wings lighten.

This one had been disturbed because they are night flying moths. The caterpillars overwinter in tree bark, and feed on Broadleaf trees such as Hawthorn (Crataegus monogyna) and Horse Chestnut (Aesculus hippocastanum) along with Ivy (Hedera helix).

Afterwards, at my allotment on Saturday I noticed a Parasitic wasp (Hymenoptera) on my Echinacea purpura PowWow wild berry, although I’m not sure which one.

There are 40 families of parasitic wasp in the UK and Ireland, from which 6,500 species have been recorded. I am pretty convinced that the one I saw wasn’t the Braconid Dinocampus coccinellae which causes the host, a dead Seven-spot ladybird (Coccinella septempunctata), to remain in situ over the wasp’s pupa cocoon as protection until it hatches. Nor does it appear to be Cotesia glomerata. This parasitic wasp lays it’s young in Large white (Pieris brassicae) caterpillars which dies as the young develops. Once they emerge they cocoon themselves beneath the caterpillar until they finally transform into adult wasps. I have Seven-spot ladybirds as well as Large white caterpillars at my plot but neither appear to be affected. Interestingly parasitic wasps can become hosts themselves. The parasitic wasps of parasitic wasps are called hyperparasoids.

However this wasn’t the highlight of my week. Also at the allotment on Saturday I finally got to see a Leaf-cutter bee. I was so excited to see this spectacular sighting but had to stay quiet and still while I attempted to capture a photo of it.

There are different Leaf-cutter bees in the UK but the one I saw was a Patchwork Leaf-cutter (Megachile centuncularis) bee. It was visiting my sweetpeas, collecting pollen and nectar for her young. The orange pollen brush underneath the abdomen clearly identifying it as a female of this species. The only thing left on my must see list, when it comes to Leaf-cutter bees, is to see one carrying a piece of leaf and also a nest. I do have a bee hotel on the allotment so here’s hoping.

Posted in nature

Song Finally Identified.

Posted on by BITM

For several weeks I have heard lots of male Grasshoppers in the long grass next to my allotment plot. I have been hoping to see one so I can identify them. Finally last Saturday the opportunity arrived. Sitting on some carpet used as a weed suppressor, a Field Grasshopper (Chorthippus brunneus) was seen basking in the sun.

A Common Field Grasshopper (unsuccessfully) attempting to hide behind a stone.

At last I knew which grasshoppers were repeating that soft short chirruping ‘song’. The sound made as the hind legs are rubbed against their wings attracts females. With successful mating approximately 15 eggs are laid and remain in the soil until next year. The nymphs hatch from March onwards and after shedding their skins three or four times become adults in the subsequent summer. This common UK grasshopper feeds on grasses so they won’t go hungry living amongst the overgrown plot.

The other amazing thing I saw last week was another bee with spectacular coloured pollen baskets. A Common carder bee (Bombus pascuorum) with orange pollen baskets was visiting a Salvia flower.

After checking a pollen colour chart, the source of the pollen it had collected was most likely from Calendula officinalis which are in full bloom at the moment (especially on my allotment).

Given the vibrant petals of Calendula I am not surprised that it’s pollen is deep orange. My Calendula is growing next to Borage which has been blooming for a while too. Loved by bees, Borage nectaries refresh every few minutes and the pollen is greyish blue in colour. I look forward to seeing bees with their pollen baskets full of Borage pollen.
Posted in nature

New House Build. 🐝

Posted on by BITM

Some fields along my journey to and from work contain a lovely combination of pink Rosebay Willowherb (Chamaenerion angustifolium), purple Buddleia and white Wild carrot (Daucus carota) flowers. Not only do they compliment one another visually but they are all loved by pollinators too. Yellow toadflax (Linaria vulgaris) has started to bloom along the roadside as well.

One special moment occurred on the Monday. As I worked within a border I noticed a Buff-tailed bumblebee (Bombus terrestris) queen flying around a patch of grass. Eventually she began to settle and after a few more large sweeping flights began making a nest in the lawn.

It didn’t take her long to dig into the soil beneath the grass.

She will remain under ground until spring when she will start her own colony.

It was also great to finally get some photos of insects that have have alluded my photographic capture so far this year.

– The first is the Red admiral (Vanessa atalanta),

– Some Hoverflies, including a Hornet mimic (Volucella zonaria) hoverfly,

Hornet mimic Hoverfly pollinating Wisteria flowers that were still blooming.
Hoverfly pollinating Geranium flowers.

– as well as a Male False oil beetle (Oedemera nobilis), to compliment the female one seen on a walk earlier in the year.

A False oil beetle pollinating a Field bindweed (Convolvulus arvensis) flower.

The males are easily identified due to their large metallic thighs, explaining the reason behind the other common name for this insect the Swollen-thighed beetle.