Month: January 2011 (Page 4 of 6)

Bug of the Week: The Mix Unscrambled

Last week I gave you two photographs that were teeming with insects. Many of you recognized the orange-yellow bumps were aphids.

Okay, it is very small, but between the legs of the butterfly is a newly hatched caterpillar. See the little guy with the black head at the arrow tip? It is a monarch butterfly caterpillar.

In this video, you can see one hatching under a microscope. (Video has music).

Another insect is hidden within those dark-colored aphids.

See the ones that are black or dark red? They are parasitized, which means they are carrying a tiny wasp larva inside them.

Eventually the dark aphids will stiffen and cling to the stem. In that stage they are called an aphid mummy. After a few days the larvae inside will complete its life cycle, pupate and then emerge as an adult wasp.

Photograph by Sarefo

You can see where a wasp emerged from this aphid mummy through the round hole in the back.

Here’s the tiny wasp that emerged from the hole. She will lay her eggs in yet more aphids, resulting in yet more aphid mummies.

Finally, there is one other interesting thing about this picture. See that the butterfly has its mouthparts extended? I watched this butterfly for several minutes before taking its picture. It was sucking up the honeydew from the aphids.

We got to see all this because we planted a special plant in our yard. Do you have any plants that attract insects in your yard?

Seed of the Week: Asparagus Fern

Yes, those hard round black seeds from last week’s mystery seed post were from an asparagus fern, Asparagus densiflorus.

This particular plant is Sprenger’s Asparagus Fern, Asparagus densiflorus ‘Sprengeri.’

Originally from South Africa, it is a common houseplant in more northerly areas. Here in Arizona it is a hardy survivor even when planted outside in the ground. In some parts of the world, that hardiness has turned it into a noxious weed.

The red berries show that the plant is not truly a fern, because it produce delicate white flowers and fruit rather than spores. It actually belongs to the lily family.

The red berries are not edible by humans, although they are eaten by birds. The plant is considered to be poisonous.

Most people buy their plants from a nursery, but you can grow new plants from the seeds inside the berries.

Photograph by Frank Vincentz

One interesting feature of this plant is rarely seen because it is underground. The roots have puffy tubers. I think the tubers help it store water for times of drought. They also swell and cause the plant to burst their pot after a time. My son calls one of our asparagus ferns “Buster” as in “Pot-Buster.”

Although asparagus ferns are lovely plants, do you see why I originally took this photo?

Do you grow any asparagus ferns?

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