Showing posts with label Pearl Crescent. Show all posts
Showing posts with label Pearl Crescent. 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.

Sunday, June 17, 2012

Eastern Snout Butterfly and Some Other Puddlers

Dry weather continues and the pond has made its transformation into a mud hole.  Open water is gone, but the area is still attractive to a wide range of wildlife species.  The most noticeable are the butterflies that come to claim water and minerals from the soupy mud.

The Eastern Snout Butterfly, a species uncommonly seen around here, has come to the mud in record numbers.  Normally I only get to see one or two of this species each year.  On this day there were at least a dozen scattered across the mud flat.  This guy has a profile that is unmistakable.  You don’t have to be very close to recognize the squared off back edge of the wings.  It looks like someone snipped them off with pinking sheers.

On the front end is the snout formed by super long labial palps.  If you’ve ever seen one of these butterflies, you’ll never fail to recognize it.

You don’t even have to get close for an accurate identification.  This is the first time I’ve seen this species at the pond, but I’m not surprised they’re here now.

The host plant of the Snout Butterfly larvae is the Hackberry.  This Hackberry growing at the edge of the pond has just gotten large enough to support a colony of Snouts.  I’m going to have to trim this tree back to keep it out of the electric lines, but I hope it will serve for many years as a nursery for Snout Butterflies.

Total butterfly numbers continue to be lower than normal.  I keep wondering if the severe storms and flooding we had earlier are partly responsible.  Even so, several other species joined the Snouts on the mud.  These four Clouded Sulphurs remained as a group as they moved from place to place about the pond bottom.

There were several skippers about, all Wild Indigo Duskywings.  These were all dark, crisply patterned individuals that must have just recently emerged.  As they age, colors fade and scales are lost, making some of the skippers very hard to identify.  It’s nice to see them in such prime condition.

Pearl Crescents were represented by a single individual.  I’ve been seeing them around, but their numbers are much lower than normal.

Eastern Tailed Blues are around in good numbers.  This species is normally very common, but its small size causes it to be overlooked by many people.  Fortunately, it’s tolerant of close approach, so you can slowly work yourself in close for a good look.  I’m hoping that butterflies will become more numerous of summer progresses. 

Wednesday, August 3, 2011

Dry Pond Butterflies

The tadpole stew that was left behind after the pond went dry is attracting a wide range of butterfly species. A Giant Swallowtail spent over an hour sucking up the nutritious goo. This is the first time I’ve ever seen one of these super sized butterflies sit still.


The Buckeye is an immigrant species that can’t survive Ohio winters and must reestablish itself from southern populations each year. I typically see this species in September as it suns itself in open areas. It’s not a normal pond bottom feeder.


Spicebush Swallowtails are regular visitors to mud puddles. Spicebush, the host plant of this particular butterfly, is not very common at Blue Jay Barrens. Fortunately, the butterfly also utilizes Sassafras as a larva food source and Sassafras grows here in abundance.


Pearl Crescents are always common visitors to the damp pond bottom. Sometimes found with the Pearl Crescents is the similar, but slightly larger Silvery Checkerspot. That’s the Silvery Checkerspot with its wings partially opened. Silvery Checkerspots tend to standout in a crowd of Pearl Crescents because of the sharp detail of the pattern on the underside of the hind wing. They are also slightly larger and display a flight pattern that seems more under control than that of the Pearl Crescents.


Pearl Crescents and Eastern Tailed Blues are the most dependable pond bottom visitors. They’ll visit every year even when the mud hasn’t been enhanced by a mass of decomposing amphibian larvae. Butterflies haven’t been overly abundant this year, so I have to think that the presence of the tadpoles has been a factor in attracting the more uncommon species to the pond bottom.


Several Skipper species have also swarmed into the mud flats. Peck’s Skippers numbered in the dozens. I like the skippers that show a little bit of recognizable patterning. It helps a lot with the identification.


There were also several unadorned skippers flitting about. This type and another with a more golden coloration were quite abundant. I’ve not yet mastered all of these skippers, so this one will remain unnamed today. Skipper ID is just another interesting thing I can look forward to pursuing in the future.

Friday, August 27, 2010

Butterflies and the Final Pond Mud

This has been a great year for butterflies and now is the time to be watching for southern species that extend their populations into Ohio during the late summer. This is a Little Sulphur, a regular immigrant species found at Blue Jay Barrens. It’s a very flashy butterfly that I may see once or twice each season. This northward expansion is a risky business for species such as the Little Sulphur. These temporary populations are killed by cold winter temperatures and this behavior can appear to do nothing but destroy a lot of butterflies. Species increase their chances of survival by occupying every acceptable habitat they can find and aggressive immigration guarantees that every possible opportunity is taken to improve the long term chances for survival.

As has been the case with many other species this year, the area is thick with Little Sulphurs. These three are probing for the last of the moisture from the drying pond. It’s interesting that the above normal rainfall we were having earlier in the year ended abruptly in mid July and we’ve been in drought mode since then.

I talked earlier about the butterfly’s habit of taking mineral laden moisture from the damp earth. This puddling behavior provides a great opportunity to observe large numbers of butterflies. Each day without rain brings more butterflies into this last bit of moisture left by the disappearing pond.

The pond sediments have shrunk during the drying process, causing cracks to form in the pond bottom. The moisture no longer wicks to the surface as it did when water was more plentiful. These Eastern Tailed Blues have to probe deep to find any moisture.

Many of the Pearl Crescents have taken to probing around the base of plant debris. Apparently the mulching effect of the plant material makes it easier to find moisture near the surface.

The grouping behavior of the different species reminds me of herds of grazing animals moving across the African veldt. Each butterfly species searches for moisture in a slightly different manner and location. So, like those grazing herds, the different species utilize the same resource, but in a manner that eliminates competition. It would be interesting to make enough observations to know whether this separation of species is a normal thing or if it’s just what’s been happening here during the past couple of weeks.