VASCM: Help in Identifying This Pest

[David Goldfarb]

Hi Jeff,

This info is from a PhD entomologist friend. I hope it helps:

The image you sent me is of a Hemipteran, a piercing-sucking insect (not a fly). Based on the picture, it looks like a false cinch bug. (My certainty in identifications is better when looking at samples with microscope, but I am pretty confident about this one).  Generally speaking, Hemipterans don’t become a big problem unless they are present in at greater abundances. It looks like this particular insect could cause problems to young vines, so I would recommend monitoring to see if they exceed an acceptable threshold, which, based on the email below, may be the case.
 
Here’s some more info, which includes management recommendations: http://ipm.ucanr.edu/PMG/r302301111.html
 
Thanks, 
David Goldfarb 
Clos de la Tech 

Sent from my iPhone

> On Jun 12, 2018, at 12:25 PM, Jeff Griffin <griffinhillvineyards at gmail.com> wrote:
> 
> Hi VASCM,
> We have a pest in our vineyard that showed up in a few spots last year and has expanded to include about half the vineyard this year. It is about the size and appearance of a fruit fly. Before becoming adults and growing wings, they inhabit the ground under dead vegetation in populations that appear like large and very energetic ant colonies. They amass on some green weeds and vine suckers that emerge from the ground. They leave a shiny resin on the suckers, which turn a bronze and whither. In some cases they get into the canopy of stressed vines where do do similar damage. Photo of adult fly:
> 
> <image1.jpeg>
> 
> 
> Is anyone familiar with this pest and know treatment, in the event the infestation grows worse?
> 
> Jeff Griffin
> Griffin Hill Vineyards, LLC
> 650-799-3327
> 
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