Author: Roberta (Page 214 of 562)

Bug of the Week: Finding More

Last week it was beginning to feel like spring here in Arizona, so I set out with my camera.

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I figured something must be happening around this large brittlebush, because it had started to flower.

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At my first pass, I really didn’t see anything at all. I thought I’d just take a photograph of a flower or two.

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Wait, there is a honey bee. I had expected to see honey bees because they are active year round. Okay, there was something going on. See the ball of orange pollen on its hind leg?

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The honey bees were quite active, so I started watching them.

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Now there’s a sweat bee, also gathering nectar and pollen.

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Looking around more, I spotted these red insects on the tips of some branches.

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They are sunflower aphids. Brittlebush plants are members of the Asteraceae or sunflower family, so that makes sense. Funny that I hadn’t seen them at first.

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Now I spotted a fly.The colorful patterns on its wings suggest it is a picture-wing fly, family Tephritidae.

It isn’t unusual to see flies taking nectar at flowers, but something isn’t quite right here. This is only a flower bud. It doesn’t have nectar yet.

picture-wing-fly-laying-eggs-really best

See that dark tube at the back of the fly? She is using her ovipositor (egg-laying tube) to lay eggs into the flower bud.

Some research reveals the mystery fly is named Euaresta stigmatica. The larvae of this species feed on flowers and developing seeds. Wow, a new insect for me!

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Looking around more, soon I found this tiny plant bug…

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… and an assassin bug waiting for a meal to come by…

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… and a tiny parasitic wasp. I wonder if the wasp was looking for fly larvae or for aphids to lay its eggs in?

I could go on, but I think you get my point. Although I could easily dismissed the plant as being empty on my first glance, this single bush harbored an entire food web. Undoubtedly, if I hadn’t been there, the food web would have included birds and lizards that would have eaten some of the insects.

Have you ever had a similar experience investigating a plant?

Mystery Seed of the Week 192: Challenge 1

As a run up to our 200th Mystery Seed, let’s do a few new challenges as a bit of a contest.  The idea of the challenges will be to introduce some real world reasons why someone might need to identify seeds.

For incentives, I’ll put together some prizes for the top three people who win the most points via these challenges, to be revealed on our 200th post. I’m thinking prizes like a children’s book, a print of one of my photographs from the blog, or some seed packets.

Challenge 1.

You are an entomologist who is studying ants. You encounter a harvester ant nest where the ants have piled their discarded food outside the nest entrance.

harvester-midden-veterens

You need to identify those grayish seeds with the white fringe to find out what plants the harvester ants are using in their environment.

Here’s a closer look at the seeds:

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Hint:  these mystery seeds have been featured on this blog.

Scoring for challenge 1:  1 point for leaving a comment with an idea (one per person, please), 5 points for the first comment with the correct answer. Please use the same name for all the challenges so I can keep track of your points.

Do you recognize what plant these seeds are from? Good luck!

Edit:  This challenge is now closed. The answer is posted at the bottom of challenge 3.

New mystery seeds and Seed of the Week answers are posted on Tuesdays.

Seed of the Week: Buckwheat

Craig recognized our mystery seeds last week as buckwheat, Fagopyrum esculentum.

Sara also recognized the seeds resembled beech nuts. According to the Online Etymology Dictionary,  the word “buckwheat” seems to come from the same Dutch words as beech nut, due to their resemblance.

mystery-seed-191-2000Buckwheat “groat”

mystery-seed-145-12Beech tree nut

I was hoping to grow some plants for photographs, but the seedlings that I grew all damped off. I suspect they are not all that happy with our climate, in addition to any pathogens. Buckwheat grows better where I come from in western New York State. In fact there is a Northeastern Buckwheat Growers group centered at Cornell University. In any case, I had to resort to illustrations from Wikimedia.

Edit:  this year the plants survived. I have added some photos below.

 

Buckwheat_002(Public domain image from Wikimedia)

As you can see from the illustration, although we treat buckwheat as a cereal crop, the plants are dicots, not monocots like oats, wheat and corn.

Buckwheat is thought to have been first cultivated in Asia. From there it has moved around the cooler parts of the globe. In some areas of North America buckwheat has escaped cultivation and naturalized.

 

Buckwheat_Buthan

(Public domain photograph of a buckwheat field by Italian writer Mario Biondi at Wikimedia)

Side note:  Even though the field looks very pretty, it might not smell quite as nice. The nectar in buckwheat flowers has a strong odor that has been described variously as “musty,” “nutty,” or worse. Some people don’t mind it or even like it, others find it intolerable.

One big advantage of growing buckwheat is that it requires little fertilizer. In fact it does well in low fertility soils. It also has a relatively short growing season and has few pests.

Buckwheat is grown as a source of nectar for honey bees and as food for wildlife, as well as for human food. Buckwheat is available as a flour, which is used in breads, pancakes and muffins. It is also sold as whole seeds or “groats.” The Birkett Mills is one store that has buckwheat recipes and products. (Talk about historical, they were established in 1797!) I have no affiliation with The Birkett Mills, I just grew up eating their products.

Have you ever grown buckwheat or seen it growing? How would you describe the odor of the flowers?

Edit:  I was finally able to take photos on 3/27/2015.

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The buckwheat flowers are tiny and adorable. They don’t seem to smell at all.

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The leaves resemble bean leaves.

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Some are almost heart shaped.

I have to admit, I have a soft spot for buckwheat. How about you?

 

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