Our annual end-of-summer contest is here, come on down to the Dave's Garden County Fair!

Sap sucking larvee

Chandler, AZ

Lately, I've been finding the slender growing ends of some trees infested with tiny sap sucking larvae, and they look a lot like a fungus gnat larva, except their bodies seem much tougher and harder to squish. The first sign of infestation are a series of pin-prick holes up the side of a branch. As the larvae grow, the holes take on a feathered appearance. I'm not sure if they are breathing through them or not.

I'm in Chandler, Az; and I've found them on my young mesquite trees and on some palo verdies. What could these uggies be, and how can I either kill or prevent them. They don't respond to the application of an organic label pest spay, nor a spraying with a fly-spray. So how can I kill them off to prevent spreading? Or is there a way to prevent infestation?


Minot, ND

Can you please provide an image?

Chandler, AZ

I'd take a photo, but with a 2 mp camera on my cell, you'd just see a blurry branch. The difference between these larvae and a fungus gnat larvae, these guys are slightly more pointy on the ends. They burrow in at an angle, and all lined up, like they are parking in a lot. I've seen an adult bug perched near the end of a growth tip, it was about 1/3 inch long, bright green, and rather triangular in shape.

Hopes this helps.

Post a Reply to this Thread

Please or sign up to post.