Alder Cimbicid Sawfly vs Large-winged Barklouse

Side-by-side species comparison

Attribute Alder Cimbicid Sawfly Large-winged Barklouse
Scientific Name Cimbex americanus Psocus leidyi
Order Hymenoptera Psocoptera
Family Cimbicidae Psocidae
Size 18-25 mm 3.0-5.0 mm
Habitat Rivers & Streams Woodlands
Diet Wood Feeders Wood Feeders
Regions North America North America
Conservation Least Concern Not Evaluated

Alder Cimbicid Sawfly

The largest sawfly in North America, with a robust body up to 25 mm long, clubbed antennae, and smoky brown wings. Body color varies from black to brownish-yellow.

💡

Did You Know?

The large, green larvae can squirt a fluid from lateral glands when disturbed, similar to their European relative Cimbex femoratus.

Large-winged Barklouse

A conspicuous barklouse with large patterned wings found on deciduous trees. Adults are active in late summer and autumn.

💡

Did You Know?

Despite their delicate appearance, winged barklice are surprisingly strong fliers and are attracted to lights at night.