On asparagus fern flowers.
Name trouble --? name was changed in 2011.
1) Wikipedia: http://en.wikipedia.org/wiki/Deroceras_invadens
2) AKA Tramp slug as per http://ucanr.edu/sites/CalSnailsandSlugs/Californias_Pest_Snails_and_Slugs/Invasive_field_slug/
Odd leafless shrub.
Second photo shows his blue tail disappearing fast!
No flowers to help ID unfortunately. Growing next to pond about 7' high.
Thousands, all about 1-2", covering one side of a tree.
About 1/4". Looks like a brown leafhopper, but was walking along rather fast on rocks and moss.