Tag Archives: Madera Canyon

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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Arizona Oak Galls, Part 4

Here is yet another type of gall found on the underside of oak leaves in Madera Canyon. Seven weeks after I collected these, two parasitoids emerged. The one above is another male Torymus (Torymidae), which may or may not be the same … Continue reading

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Arizona Oak Galls, Part 3

Okay, having looked at photos of all the possible species, I’m pretty well satisfied that Arizona white oak (Quercus arizonica) was the host of all of the galls I collected in Madera Canyon that actually produced adult cynipid wasps. Armed … Continue reading

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Arizona Oak Galls, Part 2

Gall #2 is a fancy cup-shaped one found on the undersides of leaves, sometimes in clusters. A month after I collected them, the galls (kept in a tightly sealed vial) had become covered with mold, but a single wasp chewed … Continue reading

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Arizona Oak Galls, Part 1

On my trip around the western US in the fall of 2012, I mostly limited my collecting to leafminers.  However, I made an exception when I got to Madera Canyon, Arizona, because I had found all kinds of interesting oak … Continue reading

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Monthly Mystery #14: Holes and Tunnels in Agave Leaves

On page 302 of Tracks & Sign of Insects, there is a photo of a fleshy yucca leaf riddled with holes, next to a close-up of the eggs Noah found in one of the holes.  As explained in the text, after … Continue reading

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Arizona Bugs, part 2

If I had to pick a favorite spot out of all the places we explored on our two-and-a-half-month road trip last fall, it would be Madera Canyon in southern Arizona.  The scenery there isn’t particularly eye-catching; in fact, I didn’t … Continue reading

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Monthly Mystery #3: Covered Egg Mass

I didn’t mean to make two “what the heck is this?” posts in a row, but it’s the first of the month and therefore time for another Monthly Mystery.  This one is an egg mass I found on a manzanita … Continue reading

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Monthly Mystery #2: Oak Skeletonizers

Well, a month has passed, and so far the only suggestion I’ve received about those pine needle bananas is that they might go well with lemon juice and cocktail sauce.  This month’s mystery begins with a photo taken earlier the same … Continue reading

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