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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Ants, Bees, Wasps and Sawflies (Hymenoptera) » "Parasitica" - Parasitoid Wasps » Cynipoidea » Gall Wasps (Cynipidae) » Oak Gall Wasps (Cynipini) » Heteroecus » Woolly Gall Wasp (Heteroecus dasydactyli)
Photo#762056
Stem gall on canyon live oak - Heteroecus dasydactyli
Copyright © 2013 R. Berg

Stem gall on canyon live oak - Heteroecus dasydactyli
Yosemite Valley, Mariposa County, California, USA
April 15, 2013
Size: 12 mm longest dimension
In the Happy Isles area. Many canyon live oaks had similar galls at joints between branchlets.

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Stem gall on canyon live oak - Heteroecus dasydactyli Stem gall on canyon live oak - Heteroecus dasydactyli
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Contributed by R. Berg on 21 April, 2013 - 10:28am
Last updated 24 April, 2013 - 2:15am

Moved
Moved from Unidentified Galls.
… Joyce Gross, 24 April, 2013 - 2:15am login or register to post comments

probably Heteroecus dasydactyli
The fuzz on Heteroecus dasydactyli rubs off very easily, leaving a shiny smooth gall, compared with a similar gall Heteroecus melanoderma. The fuzz/hair on Heteroecus dasydactyli is also longer than that on H. melanoderma. This is an old gall (exit hole visible near base), and is probably Heteroecus dasydactyli based on what I can see is left of the hair (and also where it has worn away).
… Joyce Gross, 24 April, 2013 - 2:14am login or register to post comments

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