Thursday, January 20, 2022

What is it Wednesday: January 19, 2022




 

Can you identify what's in this photo?

 

 

Each Wednesday morning 

on Camp Lutherlyn's Facebook page

 the Lutherlyn Environmental Education Program posts a photo. 

 

 

Readers have all morning and afternoon 

to make their best guess about what the photo is. 

 

Around 6 pm LEEP provides the answer and a brief explanation.

 

 

Each week's What is it Wednesday post 

will also be posted on the Nature of Lutherlyn blog, 

 after it is posted on Facebook,

sometimes with additional bonus information. 

 

In addition to bringing you current editions of What is it Wednesday 

on the Nature of Lutherlyn blog, 

we will be reposting old editions,

creating a What is it Wednesday archive. 

 

This photo was posted as a What is it Wednesday on

January 19, 2022. 

 

 

 

And the answer is....






 These are the empty seed capsules of a hop hornbeam tree.

They may look like leaf clusters but they are not. These are the protective sheathing that covered the seeds of the hop hornbeam. The papery sheath has dried up and opened and the seeds have fallen out onto the forest floor, and this is what is left behind. This was the female flower of the hop hornbeam tree.

Hop hornbeam is a small understory tree (about 25-40 feet tall) with soft flaky bark. It is named for its female flowers, which look like the flowers of hop vines used in brewing beer. Like the similar but smooth-barked American hornbeam (also known as musclewood or ironwood) hop hornbeam has strong wood that was often used as tool handles in the past. In fact, both hornbeams are sometimes referred to as ironwood because they both have very strong, dense wood.

Some of the smaller details in the forest are more visible now that we have a thick coating of snow – these seed capsules are a good example, often they are less noticeable against a background of many types of dead leaves. What will you notice if you go out in the forest in the snow? 

Like and follow Camp Lutherlyn on Facebook, to see What is it Wednesday posts when they come out and have the opportunity to share your guesses in the comments!

Thursday, January 13, 2022

What is it Wednesday: January 12, 2022


 

Can you identify what's in this photo?

 

 

Each Wednesday morning 

on Camp Lutherlyn's Facebook page

 the Lutherlyn Environmental Education Program posts a photo. 

 

 

Readers have all morning and afternoon 

to make their best guess about what the photo is. 

 

Around 6 pm LEEP provides the answer and a brief explanation.

 

 

Each week's What is it Wednesday post 

will also be posted on the Nature of Lutherlyn blog, 

 after it is posted on Facebook,

sometimes with additional bonus information. 

 

In addition to bringing you current editions of What is it Wednesday 

on the Nature of Lutherlyn blog, 

we will be reposting old editions,

creating a What is it Wednesday archive. 

 

This photo was posted as a What is it Wednesday on

January 12, 2022. 

 

 

 

And the answer is....




The marks in this branch (known as a “gallery”) were made by a bark beetle,
probably a European elm bark beetle.

Female bark beetles excavate a narrow groove in the wood just below the bark of a tree, with tiny even-spaced egg niches alternating on either side of the main groove. The female then lays one egg in each niche, and when each larva hatches from the eggs, it eats into the wood away from the mother’s groove and away from each of the other larvae. Each larval track is wider at the end further away from the central groove, because the larvae grow larger as they travel further away from where they started as eggs. The larva pupates at the end of the track, just below the bark, and chews its way out of the tree after it has metamorphosed into an adult beetle.

This gallery was most likely made by European elm bark beetles. Each species of bark beetle creates a distinctive pattern in its galleries. This gallery runs along with the grain of the wood, very closely matches the photos and descriptions of European elm bark beetle galleries, and was found in an area where there are some elm trees.

Keep an eye out for marks like these and you too can see evidence of the hidden lives of insects that are happening all around us! 


Like and follow Camp Lutherlyn on Facebook, to see What is it Wednesday posts when they come out and have the opportunity to share your guesses in the comments!



Thursday, January 6, 2022

What is it Wednesday: January 5, 2022




Can you identify what's in this photo?

 

 

Each Wednesday morning 

on Camp Lutherlyn's Facebook page

 the Lutherlyn Environmental Education Program posts a photo. 

 

 

Readers have all morning and afternoon 

to make their best guess about what the photo is. 

 

Around 6 pm LEEP provides the answer and a brief explanation.

 

 

Each week's What is it Wednesday post 

will also be posted on the Nature of Lutherlyn blog, 

 after it is posted on Facebook,

sometimes with additional bonus information. 

 

In addition to bringing you current editions of What is it Wednesday 

on the Nature of Lutherlyn blog, 

we will be reposting old editions,

creating a What is it Wednesday archive. 

 

This photo was posted as a What is it Wednesday on

January 5, 2022. 

 

 

 

And the answer is....




These are tracks left behind by either slugs or land snails. 

What we are seeing is where they have traveled across the bench and eaten the thin layer of algae that is growing on the surface of the wood.

This explanation from “Tracks and Signs of Insects and Other Invertebrates,” by Charley Eiseman and Noah Charney, helps us understand how this track is made: “Like other mollusks, slugs and snails possess a radula, a straplike organ inside the mouth that is covered with many small, sharp teeth. As the animal slowly glides across the surface, it moves its head from side to side while scraping up algae with its radular teeth.”

The reason why the tracks look so “squiggly” is from the motion of the head side to side as the snail or slug travels along its path. With a closer look, you can make out tiny narrow lines within each track – these are the teeth marks. (It is hard to see them in this photo, and getting a closer view makes them blurry, but you may be able to see the little lines within each squiggle.)


The only difference between slugs and land snails is that snails have shells and slugs do not. Check out this previous What is it Wednesday to find out more about these fascinating little creatures:  https://lutherlynnature.blogspot.com/2020/06/what-is-it-wednesday-june-24-2020.html

Keep an eye out and maybe you will find tracks like these or other intricate signs that animals leave behind as they go about their lives!