The last couple of weeks have seen some good inverts out on
the reserve at RSPB Rainham Marshes. It started with the discovery of a curious
chunky weevil at the end of August that was identified as Larinus turbinatus by the Natural History Museum after being posted
on another insect FB page. This caused great excitement as it was potentially
only a second record for Britain although its presence had been suspected and
the first was only upriver a little way on the Kent side in 2008.
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Larinus turbinatus |
Mark Gurney one of our own RSPB ecologists came down for a look
and found several of this distinctive species in and around the tops of
Creeping Thistle around the trail. Having seen the images I thought it looked
familiar but I am no beetle expert and I was aware of its similarity to the
common Larinus carlinae but the id seemed very straightforward.
And so on the 6th September we were visited by
Tony Allen the editor of the national 'Coleopterist'
journal and I caught up with him near the ant hill in his search for
turbinatus. He was quickly successful and I was able to get some good shots of
the short almost straight snout and broad shoulders.
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Larinus turbinatus |
That evening it was still bugging me that it
looked familiar and I searched back through my images and discovered that I had
taken pictures of this lurking species in both 2010 and 2011 as well as the
commoner carlinae!
Amazingly I found another one the following day and was able
to show it to several of my keener entomologically inclined volunteers and today
Yvonne showed me a picture of one she took back in early August! So it looks like this fetching well built weevil may have
been doing very well for itself for at least eight years on the reserve and
given the swathes of Creeping Thistle it is unlikely to do anything except
prosper.
At about the same time David Grieve found a couple of the
almost as rare Mottled Shieldbugs, Rhaphigaster nebulosa which I do believe was actually first found
in the UK at Rainham Marshes in 2010 (although I have only just found this out)
and Phil found one in 2015. Yvonne and myself have also seen them in the last
two weeks so keep your eyes open.
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Mottled Shieldbugs, Rhaphigaster nebulosa - David Grieve
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The Kids Birdwatching Club on the 9th became the
Kids Bugwatching Club (last month the B became Blackberry) and I was lucky
enough to find and photograph the seldom seen Turtle Shieldbug - Podops inuncta with it curious little
anvil-like projections either side of the head.
Yvonne is still jealous of this one in her quest to discover as many
Shieldbugs and cryptic Ladybirds on the reserve as possible.
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Turtle Shieldbug - Podops inuncta |
However, she has now found not one but two new Shieldbugs
for the site this week alone with the nymphs of the African alien Southern
Green Shieldbug, Nezara viridula
around the Adventure Playground and the rather smart Rambur's Pied Shieldbug, Tritomegas sexmaculatus in amongst the
Black Horehound in the Wildlife Garden Herb bed. It has only been in the
country since 2011 when it was discovered in Kent and these may well be the
first documented Essex records.
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Southern
Green Shieldbug, Nezara viridula - nymph - Yvonne Couch
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Rambur's Pied Shieldbug, Tritomegas sexmaculatus |
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Slender Groundhopper Tetrix subulata - my first here for several years
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Yesterday I had a short stroll out to the playground and
back where there were lots of loafing flies on the hand rails trying to absorb
the scant warmth in the air. Most were
shiny Greenbottles of various sizes – mostly Lucilia but with one or two fat bottomed Neomyias and two delta winged Mesembrina
meridiana with their golden jowls.
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The Noon Day Fly - Mesembrina
meridiana |
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The Noon Day Fly - Mesembrina
meridiana |
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The Noon Day Fly - Mesembrina
meridiana |
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Lucilia sp
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Lucilia sp |
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Lucilia sp |
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A Phaonia sp - one of the Muscids |
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Triangle Plume Moth, Platyptilia gonodactyla |
I saw a several Common and Shrill Carder Bees and German and
Common Wasps were still busily harvesting wood to pulp into their still active
nests and countless Garden Orbs, Araneus diadematus were strungout across any available gaps.
However, it was the fine rotund and rather splendid Four Spot Orb Weaver, Araneus quadratus that won the day. She
was amazing and given her gravid nature it was amazing that her spindly web
could support her weight.
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Four Spot Orb Weaver, Araneus quadratus |
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Four Spot Orb Weaver, Araneus quadratus |
This is the first one that I have seen here this season and
it always a real sign of autumn for me…
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Four Spot Orb Weaver, Araneus quadratus |
Now just four days to go before this year’s Shetland
adventure begins… I can’t wait…
21st September 2017
I really must start looking at the small stuff more carefully.
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