urbpan: (dandelion)
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We wild-collected two Chinese mantis oothecae (egg masses--pronounced Oh oh thus see!) and kept them in a jar until they hatched.

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Once they hatched we let the tiny predators out in the yard, focusing on plants damaged by grazing herbivores. This pathetic maple sapling has been reduced to mush by winter moth caterpillars and aphids. Go to work, babies!

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There's something so endearing about these minuscule murderers.

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Go forth little one! We'll collect your ootheca if you survive to make any.
urbpan: (dandelion)
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At this point I feel like I'm just documenting the steady decline and demise of my camera.

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urbpan: (dandelion)
Early on Sunday we discovered two charismatic predators in the yard. Neither one is native to North America, which is a little sad-making. I wonder how we could get some Argiope spiders onto the property...

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This tiny Chinese mantis hunts on the tops of the sunflower leaves. That's great for now, as it will likely catch mostly pests feeding on the plant. If it is still there later, when the flowers open, the mantis will be something of a pest itself, feeding on pollinators that visit the blossoms.

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The clumps of pinpoint baby spiders are gone, and now this 2mm cross orbweaver sits in a web by itself, hopefully catching aphids and whiteflies as they pass along the grapevined fence.
urbpan: (dandelion)
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While doing some weeding in the back corner of the yard I was surprised by this: the ootheca of a Chinese mantis. This means in a few weeks many tiny mantids will emerge and begin eating any insect they can catch, including each other. Most likely we will find one or possibly two adults in late summer, as large as an outstretched palm, with searching intelligent looking eyes and raptorial forelegs. It's not a native species, alas, nor is it legally protected in any way despite popular misconception.
urbpan: (dandelion)
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Chinese mantid Tenodera sinensis

The praying mantis, with its centaur body plan, head that swivels to look at you, and fierce raptorial forelegs is an immensely charismatic insect. I wonder how many (other) naturalists would list an early encounter with one of these creatures as an influence toward their studies. Even people who don't like insects like mantids (as we nature nerds call them), and today I had two different coworkers show me cellphone pics recording their encounters. One made a gesture indicating a length of 8 to 10 inches for the one she saw, which is of course impossible, but underscores how large these creatures are. In fact the Chinese mantid is the largest mantid found in North America--this individual was about four inches long. When you consider that their closest relatives are cockroaches, and what a likely human reaction would be to a four-inch cockroach, then the size seems to matter.

Alas, as you might have guessed, the Chinese mantid is not native to my yard or the region. Chinese mantids and a related European species are sold as beneficial predators at garden shops. They are more visible, if not more common, than native mantid species, and there is some worry that they are displacing North American mantids. I have mixed feelings about the Chinese mantid, since despite the harm they may be causing, they inspire awe and wonder about nature and insects.

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urbpan: (dandelion)
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urbpan: (dandelion)
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Back to the glorious clutter of home.



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Even more glorious: a walkabout the backyard reveals that a mantis has placed her ootheca on the fence! I can't wait to see the baby mantises!

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For some reason these small, almost rectangular beetles kept landing on me. Anyone recognize what they are?

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