Friday, November 06, 2009

SkyWatch Friday: Blue Sky and Sweetgum Leaves




Our Sweetgums (Liquidambar styraciflua) are the only trees in this area having colorful leaves still attached. All the rest have fallen to the ground, helped considerably by lots of wind and rain during October.





The Sweetgum balls are still green and well attached to the tree. Each ball contains hundreds of tiny Sweetgum seeds. Seed disbursal comes in early to mid-winter when the balls dry and open while still attached to the tree. If conditions are just right -- a sunny, dry day with a gentle wind -- all the balls seem to open at once. You can hear a subtle sizzling-like sound as thousands of tiny seeds fall to the dry leaves beneath the tree.





A dried and open Sweetgum ball after it has fallen from the tree. In a "good" year the ground beneath each Sweetgum tree is littered with hundreds of balls. Stepping on one while barefoot is not recommended -- and they make wicked projectiles when shot from beneath a lawnmower.




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Thursday, November 05, 2009

Moonseed Moth (Plusiodonta compressipalpis)



Observed: Under our porch light numerous time over the summer.

Range: Quebec to northern Florida, west to Arizona, north to Manitoba.

Larva host plant: Common Moonseed vine and related species.

Remarks: Wings folded as in the photo on the left is the Moonseed Moth's more common resting position.


Sources and links:
BugGuide Species Page
Moth Photographers Group
Moths of Maryland




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Monday, November 02, 2009

Burdock Borer Moth (Papaipema cataphracta)




Location/Date: Under our porch light on 10/21/09.

Size: Wingspan 29-45 mm

Range: Quebec and Maine to Florida, west to Louisiana, north to Saskatchewan.


Season: Adults fly from August to October.

Food: Larvae bore in rhizomes and stems of aster, burdock, corn, cottonwood, iris, lily, sunflower, thistle, tomato, and other plants.

Source: BugGuide

Image of larva in inside stem available on Forestry Images.



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