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Bug of the Week: Sunflower Aphids

Aphids make most gardeners cringe, but if you look deeply, they are actually quite fascinating.

Take these aphids on a sunflower. You might not be able to see it in this lower resolution version, but I found an aphid giving birth, an aphid with a baby on its back and a winged aphid in this photograph.

Do you see the tiny wasp? She is laying her eggs in aphids, which will cause the aphids to turn into mummies.

In this view you can see some of them have their mouthparts stuck into the plant. What’s that silvery thing?

Although many people mistake theses insects for honey bees, this one is actually a fly. In fact it is a flower or hover fly, genus Eristalis.

Why is it here? The adult fly may have been feeding on nectar and pollen from the flower or it may have been drinking honeydew left behind by the aphids. It also may have been up to no good as far as the aphids are concerned, because it may have been laying eggs nearby. The larvae of many types of flower flies are predators of aphids.

So many little dramas right under our noses.

Seed of the Week: Sycamore or Planetree

No one recognized these round fruit from mystery seed of the week last week?

Perhaps you would have if you saw them hanging from a tree.

These are the seed clusters from a sycamore or plane tree. In most places throughout North America the species is the American sycamore, Platanus occidentalis. The photographs shown here are of the Arizona sycamore, Platanus wrightii.

Sycamore trees are often recognized by their mottled trunks and branches due to uneven shedding of the bark.

The Arizona sycamore often grows along streams. This one is along a stream in Ramsey Canyon, in southeastern Arizona.

Sycamore trees can grow to be quite large, upwards of 80 to 100 feet tall. They also have large, lobed leaves that faintly resemble a maple leaf.

Some people are concerned because there are few small sycamores growing up to replace these large old trees.

Firefly Forest has more photographs and information about Arizona sycamore trees.

Do sycamore trees grow where you live? What have you found out about them?

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