Scenic Lawrence Brook - Interactions between species

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gypsy moths on an American  
beech unaffected part of the  
forest affected part of the forest gypsy  moth  damages on a 
damaged beech leaves gypsy moths on an American  

Gypsy  moth (Lymantria dispar)  infestation in the  Helyar forest. In  Spring 2007, 2/3 of this old-growth forest  had been defoliated.

Univoltine (1 brood per year) species, lay  eggs almost  only  on 
plants of  Rosaceae family  
Eastern Tent Caterpillar (Malacosoma americanum)
on Prunus sp. (prob. Prunus serotina)

Goldenrod  Bunch Gall caused by Rhopalomyia solidaginis, a fly Gall on Goldenrod caused by Eurosta solidaginis, a fly
This  furry ball on a white  oak is  caused by  a wasp
Wool Sower gall on white oak (Quercus alba), 
caused by Callirhytis seminator, a wasp
Gouty gall on pin oak (Quercus palustris),
caused by
Callirhytis quercuspunctata, a wasp