Lopholeucaspis japonica

The Japanese Maple Scale Challenge

Oystershell Scale has long presented a management challenge given its wide host range coupled with limited insecticide targets. However, this armored scale has been largely supplanted by the Japanese Maple Scale in Ohio owing to a combination of misidentification leading to the miss-targeting of insecticide applications.
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Authors
Joe Boggs
The Japanese Maple Scale Challenge boggs.47@osu.edu Sun, 05/23/2021 - 12:22
Miss Kim Manchurian lilac is in full bloom in northwest Ohio. This bloom event has long been a dependable phenological indicator for egg hatch of Oystershell Scale (OSS), but NOT for egg hatch of Japanese Maple Scale (JMS). Misidentification can lead to miss-targeting insecticide applications.
Published on
Authors
Joe Boggs

Japanese Maple Scale (JMS)

Scale management is difficult but an incorrect identification can make it impossible. This is sometimes the case with the exotic Japanese maple scale (JMS) (Lopholeucaspis japonica, family Diaspididae). It's relatively new to Ohio, its name is misleading, and it may be mistaken for other more familiar scales.
Published on
Authors
Joe Boggs