Category Archives: Insects

Oak Apple Gall

Oak apple gall, August 2018, Pittsburgh, PA (photo by Dianne Machesney)

I’ve never sliced open an oak apple gall but the North Park walkers did while Dianne Machesney took photographs.

Inside the oak apple gall, August 2018 (photo by Dianne Machesney)

It was red and juicy inside.  Hmmm!

We don’t know which bug made this gall and the bug died in the slicing so …

Can any of you identify this gall and the insect that made it? It was found in North Park, Allegheny County, Pennsylvania in mid August.

(photos by Dianne Machesney)

Hickory Horned Devil

Hickory horned devil’s “face” (photo by Kate St. John)

This scary looking caterpillar is actually harmless — unless you’re a hickory leaf.  What a face! What horns! Such an enormous size!

Hickory horned devil, held by Marcy Cunkelman (photo by Kate St. John)

Last weekend Marcy Cunkelman showed us this fifth and final instar of the hickory horned devil.

In his earlier instars he was smaller and brown and hid in the trees while feasting on hickory, white walnut, sweetgum, persimmon and sumac leaves.

In this last phase he started off green and ate voraciously.  Now he’s almost ready to pupate so he’s turning turquoise and will stop eating.  Then he’ll expel his gut(!), walk down the host plant, burrow 5-6 inches into the soil, and form a chrysalis.

He’ll emerge next June as a regal (or royal walnut) moth (Citheronia regalis), the largest moth, by mass, in the U.S.

Seven years ago Marcy documented the transformation of a similar hickory horned devil.  On Throw Back Thursday, watch a slideshow of the ‘devil’ turning into a moth in this vintage article:  Metamorphosis

(photos by Kate St. John)

Look For This Bug!

Adult spotted lanternfly (photo by Lawrence Barringer, PA Dept of Agriculture, Bugwood.org)

21 August 2018

Watch out! This alien insect is poised to take over Pennsylvania but we stand a chance if we find and report it early.  Here’s what to do.

The spotted lanternfly (Lycorma delicatula) is an invasive planthopper native to China and Vietnam whose favorite food is Ailanthus, the Tree-of-HeavenAilanthus is a noxious weed in Pennsylvania. This bug is even worse.

Spotted lanternflies would be OK if they only ate Ailanthus, but they don’t. Their sharp mouth parts pierce the stems and suck the sap of grapevines, hops, apple trees, peaches and hardwoods including oaks and cherries. The bugs then excrete a sticky “honeydew” that coats everything below their infestation.

First discovered in North America in Berks County, PA in August 2014, the spotted lanternfly has now spread to 13 counties in southeastern PA, three in New Jersey, and one in Virginia.  Quarantine and eradication programs are underway in many of these locations. 

From July through November look for inch-long spotted adults, shown above and below.

Adult spotted lanternflies (photo by Emelie Swackhamer, Penn State University, Bugwood.org)

The adults are boring when perched but flash red when they open their wings.

Spotted lanternfly (photo by Pennsylvania Department of Agriculture via Bugwood.org)

In spring and early summer you’ll see more nymphs than adults. The younger ones are black with white spots. The oldest — the last instar — is red with white spots. The group below was photographed in Berks County last month. 

Young spotted lanternflies in Berks County, PA in late July 2018 (photo from Wikimedia Commons)

In autumn the females lay egg masses on trees trunks, rocks and outdoor structures then cover the eggs with a mudlike substance.  The photos below show egg masses at various sites.

  • Adult near egg masses: New = mud in foreground, Exposed = lumpy in background (photo by Lawrence Barringer, PA Dept of Agriculture, Bugwood.org)

In the slideshow did you notice the nymph on the car tire?  These bugs lay eggs on the undersides of cars so we spread them unwittingly on long distance trips!  They probably got to Winchester, Virginia via Interstate 81.  Check your car before you come home from southeastern PA.

Look for this bug.  If you find it, report it online here or call 1-888-4BAD-FLY (1-888-422-3359)

Don’t let spotted lanternflies get out of hand like they did in Berks County. Eeeww!

Lawrence Barringer, PA Dept of Agriculture, Bugwood.org

For more information see:

(photos from Bugwood.org and Wikimedia Commons. Click on the captions to see the originals)


Butterflies Pose For Me

  • Butterflies near water at Dravo Cemetery, Yough River Trail, 5 Aug 2018 (photo by Kate St. John)

I usually have a hard time photographing butterflies with my point-and-shoot camera. However some of them posed for me this month.

Can you tell me their names?

UPDATE:  Thank you, Bob Machesney, for identifying them!  I’ve updated the captions.

(photos by Kate St. John)

Carnivorous Damsel

Damselfly with a mayfly lunch, La Manche Trail, NL, July 2018 (photo by Bill Anderson)
Damselfly with lunch, La Manche Trail, NL, July 2018 (photo by Bill Anderson)

Dragon or damsel? What’s in a name?

I know dragonflies are carnivorous but the name “damselfly” sounds too delicate for that.  Not so.

This damselfly in Newfoundland is eating a mayfly for lunch. 

The mayfly — not the damsel — is in distress.

Thanks to David Trently for showing us this wonder of nature and Bill Anderson for photographing it. 

(photo by Bill Anderson)


The Phantom

Phanthom crane fly in Newfoundland, July 2018 (photo by Bill Anderson)
Phanthom crane fly, Newfoundland, 2018 (photo by Bill Anderson)

This phantom lives in freshwater wetlands from the Atlantic coast to the Rocky Mountains. Gliding on the shady edge of dense vegetation he usually goes unseen.  It takes practice to notice a phantom crane fly.

I first learned about phantom crane flies (Bittacomorpha clavipes) in Newfoundland when our guide David Trently pointed one out. “There it is.”

I couldn’t see it. “Where is it? How big is it? What should I look for?”  I was so frustrated!  The bug was flying right in front of me but he was invisible.

The phantom landed and Bill Anderson took his picture. I followed Bill’s camera lens and found the fly.  Aha!

When the phantom took off, I followed him with my eyes as he floated among the shadows.  Here’s a video that shows what that’s like. (Note: If you don’t like snakes turn off the video before the 2:20 mark to avoid seeing one.)

Phantom crane flies can move like this because they’re very lightweight, their long legs are hollow, and their tarsomere (foot segments) are swollen and filled with air.  They spread their legs to catch the breeze and barely flap their wings.

Their long crane-like legs make them phantoms in the air.

Read more about phantom crane flies in this article by the BugLady at University of Wisconsin, Milwaukee.

(photo by Bill Anderson; click on the caption to see the original. video by Chromatophone Productions on YouTube)

Bug Eyes

  • Insect up close, Vermont (photo by Bob Kroeger)
    Insect up close, Vermont (photo by Bob Kroeger)

Birds are hard to find in summer’s heat so if you want to take nature photos in late July, what do you do?

Bob Kroeger, Dana Nesiti and Steve Gosser focused on insects.  Here are six of their amazing closeups.

Wow!  Bug eyes.

 

(photos by Bob Kroeger, Dana Nesiti and Steve Gosser)

 

Birds and Frogs: Our Outing in Schenley Park, July 29

Participants at the Schenley Park outing, 29 July 2018 (photo by Kate St. John)
Participants at the Schenley Park outing, 29 July 2018 (photo by Kate St. John)

Eleven people joined me on Sunday July 29 for a walk in Schenley Park.  The outing started from the Westinghouse monument and began with a surprise: a juvenile great blue heron was fishing in the ornamental pond.

Young great blue heron fishing in Westinghouse pond, Schenley park, 29 July 2018 (photo by Kate St. John)
Young great blue heron fishing in Westinghouse pond, Schenley park, 29 July 2018 (photo by Kate St. John)

Those who came early found the heron perched on top of the monument.  (Sorry I missed that!)  He caught and ate a small frog, then flew away.

There were still plenty of frogs left.  Here’s one of many adult bullfrogs.

Bullfrog in Westinghouse pond, 29 July 2018 (photo by Peter Bell)
Bullfrog in Westinghouse pond, 29 July 2018 (photo by Peter Bell)

As the day warmed up the butterflies and moths came out.  A silver spotted skipper landed on my hat and stayed so long that I tried to photograph it — but couldn’t.  These photos are by Peter Bell.

Trying to take a photo of the skipper on my hat, 29 July 2018 (photo by Peter Bell)
I’m trying to take a photo of the skipper on my hat, 29 July 2018 (photo by Peter Bell)

Silver spotted skipper on my hat, Schenley park, 29 July 2018 (photo by Peter Bell)
Silver spotted skipper on my hat, Schenley park, 29 July 2018 (photo by Peter Bell)

We saw squirrels, chipmunks and young rabbits … and, yes, there were birds.  Of the 19 species we saw/heard, we voted these the Best:  (Click here for the complete checklist.)

  • The juvenile great blue heron in the pond.
  • Two young wood thrushes in a tangle of old branches.
  • A male scarlet tanager in the trees above us and later a female as well.
  • Beautiful American goldfinches eating thistle seeds.

At the end of the walk we stood by the pond and pondered the frogs.

We think about identifying those frogs (photo by Anne Marie Bosnyak)
We think about identifying those frogs (photo by Anne Marie Bosnyak)

 

(photos by Kate St. John, Peter Bell and Anne Marie Bosnyak)

A Way To Get Rid of Yellowjackets

Skunks smell bad, they can make you smell bad, they’re at high risk for rabies(*), and they eat bees and eggs causing problems for beekeepers and chicken farmers.

However, they have one benefit:  They eat yellowjacket wasps.

This spring Marcy Cunkelman remarked that a skunk keeps her yard free of yellowjackets and grubs.  The skunk leaves holes but that’s better than stepping on a yellowjacket nest!

The video above shows a skunk digging for grubs.

The video below shows a skunk eating a yellow jacket nest.   (Warning: It has music that sticks in your head all day!  It also has subtitles so you don’t need the sound on. But you might be curious. What song is it?)

(videos embedded from YouTube. click on the videos to see the originals)

(*Rabies)  Skunks are at high risk for catching rabies and are therefore called a “rabies vector species.”

In all mammals — humans as well as skunks — rabies does not make the animal feel and look sick until the rabies infection has reached the fatal stage.  If you are bitten by a wild animal you cannot tell if it has rabies. The hidden illness is sometimes described as “carrying rabies.”