Summer Erosion is a special Erosion only available in Summer. They look like normal Erosions, but they have hearts surrounding them. They also have a flower necklace around their neck. All of the forms of Summer Erosion are cheerful-looking. Even the Tainted version is smiling.
In-Game Description[]
"These cheerful erosions are donning leis made of summer flowers to celebrate Courting Day!"
Evolution[]
http://i313.photobucket.com/albums/ll400/Zilla360/summererosion.png