Japanese Giant Ichneumon vs Large-winged Barklouse

Side-by-side species comparison

Attribute Japanese Giant Ichneumon Large-winged Barklouse
Scientific Name Megarhyssa praecellens Psocus leidyi
Order Hymenoptera Psocoptera
Family Ichneumonidae Psocidae
Size 30-45 mm body, ovipositor up to 80 mm 3.0-5.0 mm
Habitat Forests Woodlands
Diet Wood Feeders Wood Feeders
Regions Japan, Eastern Asia North America
Conservation Least Concern Not Evaluated

Japanese Giant Ichneumon

One of the largest ichneumon wasps in Asia with a remarkably long ovipositor. It parasitizes wood-boring horntail larvae in Japanese forests.

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Did You Know?

Japanese naturalists have studied this species since the Edo period, and it appears in historical entomological scrolls.

Large-winged Barklouse

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

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Did You Know?

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