Showing posts with label Northern Metalmark. Show all posts
Showing posts with label Northern Metalmark. Show all posts

Monday, June 25, 2012

Lacking Butterflies

Blue Jay Barrens is still lacking butterflies.  A few species, like this Northern Metalmark, are present in expected numbers, but most species are either poorly represented or completely absent.

Northern Metalmarks typically sit with wings outspread, so the common view is of the mostly brown upper surface.  Occasionally one will give a glimpse of the bright orange under side.

Even though the metalmarks are occasionally found on flowers, their usual location is on a sunny leaf near the ground.  My first notice of them is most likely to be when they quickly shift plants at my approach.  I don’t know why this species would be so abundant this year when so many butterflies are absent.

This may look like a typical clump of Butterflyweed, but there is something missing.  There are no butterflies visiting here.  At this time of year there should be no Butterflyweed clumps without butterflies.  Most noticeable to me right now is the total absence of any hairstreak species.

Common Wood Nymphs are around in good numbers.  These are low fliers that thread their way through the vegetation.

Little Wood Satyrs are generally very common this time of year.  I’ve seen only two in the past week. 

This Little Wood Satyr looks like it’s been around for a while.  Hopefully the few individuals that managed to emerge have left plenty of eggs to rebuild the population for next year.

Most of my Great Spangled Fritillary encounters have been with lone individuals.  In some years there are so many of these butterflies that they knock each other off the flowers during the scramble for nectar.

Just a scattering of Pipevine Swallowtails around.  No other swallowtail species were seen last week.

This is one of the swallowtail species that keeps its wings moving while feeding.  I figure all of that movement makes it more difficult for predators to zero in on the butterfly.  It’s disturbing not to see the familiar masses of swallowtails working over the Butterflyweed.

A lone Pearl Crescent has the entire flower head to itself.  I hope the butterflies get themselves straightened out.  I can understand if it was the weather patterns responsible for the decline.  The winter was warmer and wetter than normal, spring brought record floods and high temperatures and summer is beginning with a severe drought already underway.  This may turn out to be the year without butterflies.

Tuesday, June 30, 2009

Northern Metalmark

This is turning out to be a wonderful year for butterflies. Pictured above is a mating pair of Northern Metalmarks, female on the right. These butterflies are uncommon in Ohio.

Northern Metalmarks are often highly concentrated in small areas. I counted 10 in a small clearing about the size of the average living room, but could find none in the surrounding area.

Sometimes you can walk right by these butterflies without causing them to fly. The easiest way to detect their presence is to stand in one area and use a long stick to gently brush the surrounding vegetation. When disturbed, the Northern Metalmark will make a short flight and settle back onto a nearby plant. Once you get the image in your mind, it’s easy to see individuals sitting around on the plant leaves.

They would probably be easier to spot if they displayed the bright orange underside of their wing. Their habit of holding their wings straight out to the sides of their body makes it hard to view the bottom of the wing.

Occassionally you catch them in the right position and get a glimpse of the underwing.

All the individuals I saw, except that in the first photo, were males. I imagine the males emerged first and the females are just beginning to arrive.

This is Round-leaved Ragwort, Senecio obovatus, the host plant for the Northern Metalmark. You don’t find a cluster of metalmarks without also finding this plant. The larvae, adorned with long white hairs, will be noticeable on the host plants later this summer.