Showing posts with label Common Green Shieldbug. Show all posts
Showing posts with label Common Green Shieldbug. Show all posts

Sunday, 15 November 2015

Hunting for winter inverts

Apologies for the poor upkeep of posts on my blog of late...for one it has been pretty grim weather for the last couple of weeks, which hasn't made it particularly conducive for either birding or photography, and also I am being kept fairly busy with the workload associated with undertaking a university degree! That said, there really is still plenty to look at and fin when you start looking...

I shall start with some moths. My faithful little heath trap has been doing ok just outside the caravan, but catches really have decreased fairly significantly recently. November (slash Autumnal) Moths have been perhaps the most common features, whilst Feathered Thorns have been turning up fairly regularly, which is great! Their bipectinate antenna, presumably from which the name originates, are superb! I have helped out with a couple of the moth-trapping events run on campus by the uni's environmental society 'Ecosoc', and a particular highlight was an Oak Nycteoline, which is a new one for me. Otherwise, the usual suspects such as Beaded Chestnuts, Large Yellow Underwings, Common Marbled Carpets and Black Rustics provide the rest of the entertainment...

Feathered Thorn - a truly superb species which has been a regular moth in the traps recently. This species has just one, relatively short generation, being on the wing from September to November

This smart moth is one of three confusingly similar species, that all occur at this time of year: the November Moth, the Pale November Moth and the Autumnal Moth. It can be very tricky to separate the three species on external characteristics alone, especially in the frequent melanistic individuals

This smart little moth could easily be taken for one of the angular micro moths in the Tortricidae family. It is an Oak Nycteoline. They are on the wing from October through to March, and come in a cool variety of different forms. I have no idea what justifies its name, but it is certainly amongst the more exotically-named lepidoptera species! All online dictionaries have thus far fallen short of defining the meaning of this intriguing name


...onto the other invertebrates then. Scavenging around campus and bush-bashing has revealed a surprising diversity of inverts clinging on despite the grim weather. One of the really cool things has been the discovery of the winter forms of Common Green Shieldbug. As their name suggests, they are for the most part an all-green shieldbug. However, as winter approaches and temperatures cool, individuals loose this green colour and fade into their dark brown form. This re-affirms their camouflage against the increasingly dulled tones associated with autumn and winter. It seems that they may also begin turning green again as temperatures warm in the spring. We have found many of these brown individuals around, and some in-between forms too!

There have also been plenty of other shieldbugs lurking around on plants around the campus- on Friday Will Hawkes and I managed to find three different species in one of the gardens, namely that of Gorse, Hairy and Common Green Shieldbugs. Will also managed to find one of these stunning little Cinnamon Bugs (Corizus hyoscyami). These bright little coleoptera species resemble the Fire Bugs that inhabit the nearby continent, and so it was cool to come across one in the garden. Butterflies and bees are all still very much on the wing, with plenty of fresh Red Admirals and Peacocks still out and about on still days, perhaps looking for somewhere to pitch up overwinter, such as a warm shed. The odd Bombus terrestris passes by still, and Honey Bees are still collecting pollen from the few flowering plants on campus! 

The smart Cinnamon Bug (Corizus hyoscyami). This is a species spreading northwards in the UK, with no records further than Liverpool as yet. It is most often encountered in the south, and is relatively common across Europe, having been recorded as far north as Finland! Its common name originates from the insect's apparent cinnamon fragrance if sniffed closely!

An interesting little beetle, with finely-indented elytra. This is the Cereal Leaf Beetle (Oulema rufocyanea), which can be a pest species on cereal crops

Just one example of the amazing difference between Common Green Shieldbugs at the moment! Very cool. Here are some more...

Common Green Shieldbugs

A Hairy Shieldbug

Gorse Shieldbug

Red Admiral

Wednesday, 16 September 2015

Freshers Week - Invertebrate life

It has been superb to wander around hedgerows and areas of scrub grassland and discovery a plethora of interesting bugs, flies, moths, spiders beetles and various other invertebrates! (a typical Freshers week activity...). Will Hawkes and I (Will is a great photographer and naturalist from Llangollen, who is studying a similar course to me) have managed to crack down on a really cool variety of species, with the help of my sister and also Ellie Mahew.  Although the insect life back home on Bardsey is good at times, it is certainly very limited in its diversity, so coming to the mainland and seeing so many different species is really cool! It has been great fun learning about them and trying to track down the various IDs...I have uploaded a few images below which give a good selection of our discoveries...


 This has been one of the biggest highlights for me...a (very small) male Wasp Spider! I have always wanted to see one of these striking and beautiful arachnids, and really didn't expect to see one today as we were walking along the coastal path to Maenporth- well done Rachel! The females of this species are much larger than males, having swollen abdomens of lengths over 1cm with the stunning black, white and yellow stripes as in this one

 There seem to be an awful lot of Orb-weaving Spiders around, with hundreds of individuals lining all of the lanes and scrub hedgerows, varying enormously in size and colouration. Most of them appear to Garden Spiders (Araneus diadematus). We have seen a large variety of prey items strung out in their perfect orb webs, including Grasshoppers, Parasitic Wasps, small micro moths and many different fly species


One of the equally most numerous families seemingly plastered along every bramble hedgerow is that of the Shieldbugs: Hemiptera. The Common Green Shield-bug seems to be the most common at the moment, but there have also been large numbers of the Dock Bug on its foodplant too...
Hairy Shield Bug (Dolycoris baccarum)

 Both of the above are Dock Bugs (Coreus marginatus), but the lower individual is a late instar, showing a different colour and shape to the adult on top

Common Green Shield-bug (Palomena prasina)

Red-legged Shield-bug (Pentatoma rufipes)

Speckled Woods have been nice to see too, as we rarely get this shy woodland-dwelling butterflies over onto the island

 Field Grasshopper (Chorthippus brunneus)

Meadow Grasshopper (Chorthippus parallelus)

This cool caterpillar was hiding in the bracken alongside the path today, doing its best to blend in- and it did that rather well! This one will become a Dot Moth after pupating

One of the smaller things we've found, and what initially looked like a mini Devil's Coach-horse Beetle; it is a Rove Beetle (Paederus littoralis),