Author: Roberta (Page 92 of 562)

Bug of the Week: Metallic Wood Boring Beetle

Our beetle this week isn’t showing off its colors.

This is a metallic wood-boring beetle, family Buprestidae. They are sometimes called jewel beetles because many members of the family are brightly-colored and shiny. If you look closely, you might see the one above has some gold/green on the ridges of its hind wings (elytra) and on its legs, but otherwise it is rather dull.

In comparison, some members of its family look like this:

(Public domain photograph from Wikimedia)

The colors aren’t due to pigments in the exoskeleton, but instead the beetles appear metallic or iridescent because the fine texturing of their outer surface scatters light.

Regardless of their colors, many adult beetles of the family Buprestidae have cylindrical or bullet-shaped bodies.

The larvae are grubs that bore through the wood of trees, hence the name “wood-boring.” Most prefer to eat injured, dead, or dying trees. For that reason, people are likely find them in or around fire wood.

Have you ever found a jewel beetle?

Children want to learn more about beetles? Try the lovely picture book, A Beetle Is Shy by Dianna Hutts Aston and illustrated by the fabulous Sylvia Long.

Age Range: 5 – 8 years
Publisher: Chronicle Books (April 5, 2016)
ISBN-10: 1452127123
ISBN-13: 978-1452127125

 

Disclosure: This book was provided by my local library. Also, I am an affiliate with Amazon so I can provide you with cover images and links to more information about books and products. As you probably are aware, if you click through the highlighted title link and purchase a product, I will receive a very small commission, at no extra cost to you. Any proceeds help defray the costs of hosting and maintaining this website.

Bug of the Week: Bougainvillea Caterpiller Moth Life Cycle

This empty pupa says it all.

Our little green caterpillar from past posts has revealed his identity. He is a male bougainvillea caterpiller moth, Asciodes gordialis. Although I originally thought he might be a pyralid caterpillar, he turns out to belong to the family Crambidae.

You can tell its a male by the dark tufts mid-way up the antennae and the dense fringe of hairs on the front legs.

You can see the fringe of hairs on the front legs better in this view.

Unfortunately, circumstances weren’t the best for taking good photos.  For some excellent quality photographs of a male bougainvillea caterpiller moth, see Jim Burns Photos.

Bougainvillea Caterpiller Moth Life Cycle

Let’s recap what we discovered over the last few weeks (with links to past blog posts.)

bougainvillea caterpiller moth caterpillar hidingThe caterpillar feeds on and hides in rolled up bougainvillea leaves.

Bougainvilleas are brightly-colored shrubs that flower throughout the summer in Arizona.

The color comes from the red or magenta sepals, which are not flower petals.

The true flowers are these tiny white ones. The caterpillars feed on leaves near the sepal clusters at the tips of the stems.


The caterpillar is green with a bit of mottling on its head capsule.


Looking closer, it was easy to see the breathing tubes or trachea through the the caterpillar’s clear exoskeleton. The dark green line down the back is its heart.


Before it pupated, the caterpillar turned pink.

And then it pupated.

Maybe someday I’ll be able to find some eggs, and we’ll have the complete life cycle.

 

Want to learn more about moths? National Moth Week is coming up July 22 through 30, 2017. Check the website for events near you.

This year the focus will be on tiger moths.

Bug of the Week: Caterpillar Pupates

Remember the green caterpillar that showed us its trachea and heart?

It has been going through some changes.

One morning it looked like this. No worries though.

There’s nothing wrong with it. The green caterpillar has entered the phase of the life cycle called the prepupa. It was ready to change into a pupa.

Sure enough, the next day it had pupated. Can’t wait to see what the moth looks like.

Too bad the pupa isn’t see-through like the caterpillar was, so we could see the changes happening inside.

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Aside:  Every year we expect to hear cicadas around Father’s Day. Sure enough, Father’s Day was Sunday and we heard our first cicada on Monday. Talk about sticking to a calendar!

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