Category: Find Out More (Page 17 of 20)

More About Seed Bugs

After writing my post on Wednesday about seed bugs, I sent it down to the Great Bug Guru and Swell Guy, Carl Olson, at the University of Arizona. Carl was nice enough to straighten me out on the scientific name of the bug in the photo. He also let me know that there is similar bug that he has been hearing a lot about here in Phoenix.

Here is a photo of the bug he’s been getting calls about, Neacoryphus lateralis.

Neacoryphus laterali

Carl was also nice enough to send me a photo of the small milkweed bug, Lygaeus kalmaii. This is the species that may also occur on milkweeds, and also has a white spot (actually a pair of white spots), on the back of its wing.

Small milkweed bug:

small milkweed bug

More About White-lined Sphinx Caterpillars

Some of you might be wondering why the white-lined sphinx moth caterpillars (Hyles lineata) are traveling in such numbers (see previous post). No one knows for sure what is going on. Two suggestions are that the caterpillars are looking for places where they can dig into the soil to pupate, and/or that they have run out of food and are looking for more. The caterpillars feed on common desert weeds, several wild relatives of four o’clocks. These plants are drying out since we haven’t had rain in a little while, so it is possible at least some of them are looking for food.

I was able to do a small experiment to test whether the pupation idea holds water. If you place one of these wandering larvae in a terrarium filled with soft, moist potting soil, you will be amazed at how fast they dig in. I expected to see a bit of wandering, then dig into the soil. Nope, almost as soon as their legs touched the soil they were digging. The hard clay desert soil (yes, our desert soil is clay rather than sand) is almost like cement where these larvae were found.

Update:  The white-lined sphinx moth emerged in September.

Bugs of the Week: Billions of Bees

Oh, I wish I had the time to take some video of one of our plants this morning. Our desert spoon is flowering and it is alive with bees. Honey bees, bumble bees, carpenter bees, digger bees, sweat bees, big bees, tiny bees, billions and billions of bees. Well, probably not that many, but it seemed that way. It was like a swarm.

The desert spoon plant sends up a huge flower stalk covered with blooms. This year there were 5 stalks. You can’t see them all here.

desert spoon

Each stalk was covered with hundreds of bees. Each of those specks was a fast-moving insect.

bees
Of course you know that the bees were gathering pollen, the yellowish powder produced by the flower, and nectar, the sweet liquid reward for picking up the pollen. The honey bees pack the pollen into the specially shaped baskets on their hind legs. Check out the load this honey bee has gathered. Honey bees were the most numerous bees this morning.

honey bee

I was able to get very close to these insects without any danger. They were intent on gathering food, and that is it.

The biggest bees I saw were the black carpenter bees, but they seemed intimidated by the other bees and quickly flew away. They may have also been sizing up the stalks as future home sites. Carpenter bees build their nests in agave and desert spoon flower stalks.

The second biggest bees were yellow and black bumble bees. They stay near the top of the stalks, so I couldn’t get a close up.

bumble bee

The smallest bees were some tiny sweat bees. They were numerous, but not as noticeable because of their pencil-lead size.

sweat bee

Mixed in were a few other sweat bees and digger bees. Here are two examples.

green beeStripe bee

Finally, not all the creatures I saw this morning were working hard to gather pollen and nectar. This jumping spider was taking advantage of the bounty of bees to catch breakfast. It was behaving in an odd manner, jumping down and hanging upside down with its legs drawn in. In that position it looked all the world like a flying bee. Very Cool!!

spider

For more information about bees, check out the “Africanized Honey Bees on the Move” website under the blogroll in the sidebar.

Also, try out growing list of children’s books about honey bees at Science Books for Kids.

honey-bee-books-for-children

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