Tag Archives: Pteromalidae

Willow Stem Galls

Swellings on willow stems can be caused by a variety of gall midges, sawflies, agromyzid flies, and buprestid beetles. In many cases I have no clue as to the identity of the gall inducer just from looking at a photo … Continue reading

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Life Lurking in Lousewort

Not long after we started to let our lawn go wild, a couple of blue-eyed grass plants (Sisyrinchium montanum) popped up in one area. Blue-eyed grass owes its name to its grass-like leaves; it is actually in the iris family … Continue reading

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Silk on Stink Bug Eggs

Last week I got an email from a reader named Kelly in Brazil, asking if I could help unravel the mystery of these stink bug eggs (Pentatomidae) covered with silk: I was at a loss, and simply responded: “Interesting find… I’m … Continue reading

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Arizona Oak Galls, Part 5

Here is yet another gall from Arizona white oak. It is another “oak apple,” superficially similar to these, which I now know to be Atrusca aggregata (thanks to Jim Zimmerman, who has studied southwestern cynipid galls for many years and … Continue reading

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Fall Cleaning

The November before last I posted a picture of some wasp larvae a friend had found in the burrow of a wood-boring beetle larva while whittling by a campfire.  The following May, I posted photos of the adult pteromalids.  I suppose it was … Continue reading

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Goldenrod Rosette Galls, Part 3

Last August I mentioned I was heading off to do some work in Maine and that I might bump into some more of the seaside goldenrod rosette galls that were only known from a single example I had collected on … Continue reading

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Flies from a Goldenrod Leaf

As part of my survey of gall-making and leaf-mining species of Nantucket last summer, I collected a number of Elliott’s goldenrod (Solidago latissimifolia) leaves with mines like this one: Beginning three days later, agromyzid flies emerged from these mines over … Continue reading

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Wood-boring Beetle Parasitoids, Part 2

Last November I posted a picture of some wasp larvae a friend had found in the burrow of a wood-boring beetle larva while whittling by a campfire: As I mentioned, I stuck them in the back of the fridge over … Continue reading

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Bugs on Bluets

Yesterday afternoon I took a short walk before some much needed rain clouds settled over western Massachusetts.  I came to a patch of bluets (Houstonia caerulea), common wildflowers that often don’t seem to have much going on with them in … Continue reading

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Blueberry Gall Wasps, Part 3

Yesterday, after still more wasps had emerged from my three blueberry galls, I decided to take them outside and try to get some shots of them in a natural habitat rather than on the usual piece of white paper.  After … Continue reading

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