Year: 2013 (Page 37 of 59)

Bug of the Week: Checkered White Butterfly

It is time for the spring butterflies, like this checkered white.

checkered-white

Although common some years in the Southwest, checkered white butterflies are found throughout the United States, and are thought to move north through the summer.

checkered-white-2

Here in the desert, the adults visit the seasonal wildflowers for nectar.

Checkered_White_larva

(Photograph by Megan McCarty at Wikimedia)

The larvae (caterpillars) have black and yellow spots and speckles. They feed on plants in the mustard family, which are only abundant after sufficient winter rains.

Have you seen any checkered white butterflies yet this year?

 

 

 

Mystery Seed of the Week 158

Our mystery seeds this week are also from a southwestern plant.

mystery-seeds-158

It wasn’t the seeds or flowers that caught our eye, but the seed cases.

mystery-seed-158-2Does this help?

Please leave a comment if you recognize these mystery seeds.

Edit:  The answer is now posted.

Seed of the Week: Catclaw Acacia

Our mystery seeds from last week must have stumped everyone. They were from a catclaw acacia tree, Acacia greggii.

catclaw-claw-close

Catclaw acacias are named for their hefty curved thorns that resemble a “cat’s claws.”

catclaw-acacia-tree

As with many southwestern “trees,” catclaw acacias are somewhat shrubby. They become more tree-like over time, however, and live well over 100 years.

catclaw-acacia-branch-2

Right now they are in full bloom in Arizona. We encountered these trees while hiking and you could smell them quite a ways away. The flowers have a very strong odor.

 

catclaw-acacia-branch

Many insects were visiting the flowers. Do you see any in the photograph above?

Have you ever smelled a catclaw acacia in full bloom? What do you think it smells like?

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