Insect and Bug ID forum: Defoliating larvae

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Name: Dirt
(Zone 5b)
Plant Lover: Loves 'em all! Garden Photography Bee Lover Region: Utah Photo Contest Winner: 2014 Celebrating Gardening: 2015
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dirtdorphins
Jun 11, 2016 6:46 PM CST
It's like invasion of the purple worm, defoliating my Cotinus
Thumb of 2016-06-12/dirtdorphins/877942 Thumb of 2016-06-12/dirtdorphins/b3bd40 Thumb of 2016-06-12/dirtdorphins/637546

but I guess they don't start out purple--I found a couple tiny ones like this
Thumb of 2016-06-12/dirtdorphins/7518a6 Thumb of 2016-06-12/dirtdorphins/9efc25

There is also this beetle that likes to eat this tree
Thumb of 2016-06-12/dirtdorphins/335e45
I'm having a hard time believing these larvae turn into this beetle because the big purple worms are so much bigger than the little beetles, but earlier this spring the tree had a lot of these beetles and they pretty much ate most of the new leaves...and they probably laid a bunch of eggs

any ideas what these are???

Thanks

Name: Leslieray Hurlburt
Sacramento California (Zone 9b)
The WITWIT Badge Region: California Plant Lover: Loves 'em all! Xeriscape Native Plants and Wildflowers Salvias
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HamiltonSquare
Jun 11, 2016 10:04 PM CST
Check out the last two images at bottom of page. http://utahpests.usu.edu/uppdl/htm/arthropods-from-database/...
Hamilton Square Garden, Historic City Cemetery, Sacramento California.
Name: Dirt
(Zone 5b)
Plant Lover: Loves 'em all! Garden Photography Bee Lover Region: Utah Photo Contest Winner: 2014 Celebrating Gardening: 2015
Photo Contest Winner: 2015
Image
dirtdorphins
Jun 11, 2016 11:09 PM CST
Given their lack of prolegs plus their size, numbers, presence of the beetles, and the extent of defoliation going on my guess is

Blepharida rhois
http://bugguide.net/node/view/39512
which is larva #80 here
Thumb of 2016-06-12/dirtdorphins/077521

and dang if it doesn't look like I have San Jose Scale on the tree too. Poor tree! Things are not looking good for it
Name: Leslieray Hurlburt
Sacramento California (Zone 9b)
The WITWIT Badge Region: California Plant Lover: Loves 'em all! Xeriscape Native Plants and Wildflowers Salvias
Foliage Fan Lover of wildlife (Black bear badge) Birds Bee Lover Hummingbirder Butterflies
Image
HamiltonSquare
Jun 12, 2016 12:00 AM CST
The beetle was the big clue in the ID. I did wonder about the "stuff" on the head of one in your photo and found out what it is.
From a research article here; ZooKeys 157: 95-130 (21 Dec 2011)doi: 10.3897/zookeys.157.1472

"In Blepharida, Diamphidia, Podontia, and Polyclada, larvae retain their feces directly on the dorsum. This coating acts as a deterrent to attacking enemies such as ants (Vencl and Morton 1998, 1999). The fecal coat may also serve to moderate body temperature or to reduce water loss but the functions have not been tested. Fecal retention and the dorsally-positioned anus represent complex characters supporting the monophyly of the Blepharida-group (Paterson 1943)"

Hamilton Square Garden, Historic City Cemetery, Sacramento California.

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