The sightings and occasional thoughts of an English birder in Oslo
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Monday, 28 June 2021
Invertebrate holiday update
I have had quite a few posts about the butterflies around the cabin at Hulvik including this one from last year which summarises the species I have seen. Prior to this year I had recorded 34 species and our visit at the end of May had already added a new one with Green-underside Blue (kløverblåvinge). I had more observations of that species this last week including an egg laying female but no other new species. My total of 16 species was not very impressive and the complete absence of any of the larger fritillaries was worrying.
Large Skipper /engsmyger
Brimstone / sitronsommerfugl
Silver-studded Blue/argusblåvinge - assumed this species but probaly both this and Idas seen
Small Pearl-bordered Fritillary /brunflekket perlemorvinge plus a number of fast moving similarly sized fritillaries that could have been 0-4 other species
Red Admiral / admiral
Small Tortoiseshell / neslesommerfugl
Pearly Heath /perleringvinge
Ringlet /gullrinvinge
Small White / liten kålsommerfugl
Common Blue / tiriltungeblåvinge
Small Copper / ildgullvinge
Grizzled Skipper / bakkesmyger
Dingy Skipper / tiriltungesmyger
Moorland Clouded Yellow / myrgulvinge
Wall Brown (sørringvinge)
Green-underside Blue / kløverblåvinge
In addition to these butterflies I also noted the odd moth (god forgive), grasshopper, wasp and odonata. It was in fact a moth which was the real invertebrate highlight - a broad-bordered bee hawk-moth (bredkantet humlesvermer) allowed itself to be admired and photographed at close range. I saw what was most likely this species last year but it didn’t hang around long enough for me to confirm so I was very happy that this one allowed me to go and get my camera (I was swimming at the time).
Another very interesting moment was provided by a red-banded sand wasp carrying a caterpillar over the patio of the cabin. I wish I had followed it as it was only afterwards that I read up and realised that the caterpillar was going to be taken to a hole where the wasp would lay an egg inside it and the caterpillar would provide food for its offspring.
a Common Blue (tiriltungeblåvinge) lacking the (distinctive) spot at the base of the front wing
and one with the spot
Large Skipper (engsmyger)
the red-banded sand wasp (nattflylarvegraver) with caterpillar
Dingy Skipper (tiriltungesmyger)
Small Pearl-bordered Fritillary (brunflekket perlemorvinge)
Moorland Clouded Yellow (myrgulvinge) as you normally see them showing just the underwing
and here with a bit of the upperwing showing
and here a lucky shot showing the whole upperwing almost in focus as it flies up
the upperside of what I believe is a Silver-studded blue (argusblåvinge) and not the near identical Idas blue (idasblåvinge)
underside of the above blue
this one which has a much narrower blue border is I believe an Idas but in Norway the only accepted way to tell them apart is by observing the spine on the fore tibia which only Silver-studded is (supposed) to have
I agree with Idas for the 2nd blue. Another characteristic is the segment along the leading edge of the hindwing; blue in Idas and mostly black in Silver-studded, and just about visible from your shots. Plus Silver-studded always seems much smaller and rounder-winged to me, which is also apparent comparing the two.
I agree with Idas for the 2nd blue. Another characteristic is the segment along the leading edge of the hindwing; blue in Idas and mostly black in Silver-studded, and just about visible from your shots. Plus Silver-studded always seems much smaller and rounder-winged to me, which is also apparent comparing the two.
ReplyDeleteHere's what I believe to be Idas from the Alps;
ReplyDeletehttps://www.inaturalist.org/observations/88943141