Woolly oak aphids on black oak leaf

These are probably woolly oak aphids, Stegophylla brevirostris, infesting a large black oak tree in the yard of Angelo Costanza,  23 July 2015, Columbia California. Thanks to Lynn Wunderlich for the identification.

Several video links are at the bottom of this post.

Click on an image to enlarge it.

Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California
Woolly oak aphids, Stegophylla brevirostris, on black oak leaf, 23 July 2015, Columbia California

Video links:

 

 

 

 

 

 

 

 

 

 

 

Menu