It's in the elm zigzag sawfly's caterpillar-like larval stage that you're likely to see it - and the distinctive damage it ...

These pests pose problems for your elm trees.

BECKET — There’s a tiny insect new to Berkshire County that is munching on leaves, giving some trees a ghostly, wintry appearance even in the midst of summer — entirely defoliating elms. The elm ...

A new invasive species has been detected in Michigan's St. Clair County.

DELAWARE, Ohio (WCMH) – An invasive insect known for leaving unique patterns on the leaves of elm trees has been spreading this summer. In July, Ohio became the latest state to confirm a population of ...

A new invasive insect has been spotted in Michigan: the elm zigzag sawfly.

The North Carolina Forest Service has been receiving reports of scorched-looking elm trees throughout central North Carolina, from Davidson to Johnston counties. But Jim Slye, the service’s Forest ...

A reader of ERR's Novaator science portal noticed diseased ash and elm trees in their home yard and asked what was causing it and what could be done to help the trees. According to Rein Drenkhan, ...

The devastation of elm trees in Ireland due to Dutch elm disease is one of the most striking but overlooked changes in our ...

Sticky traps have been set up in two locations in Maine to determine if the elm zigzag sawfly is now in the state. Credit: Courtesy of Michael Parisio If you see an elm tree leaf with an odd, ...