Ocean Strider vs Large Larch Sawfly

Side-by-side species comparison

Attribute Ocean Strider Large Larch Sawfly
Scientific Name Halobates micans Nematus erichsonii
Order Hemiptera Hymenoptera
Family Gerridae Tenthredinidae
Size 4-5 mm 8-10 mm (adult)
Habitat Beaches & Coastal Forests
Diet Omnivores Omnivores
Regions Tropical Atlantic, Pacific, and Indian Oceans Europe
Conservation Least Concern Not Evaluated

Ocean Strider

A remarkable open-ocean water strider that spends its entire life on the surface of tropical seas. It is one of the very few insects adapted to a fully marine existence. It lays eggs on floating debris including feathers and seaweed.

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Did You Know?

It is one of the only insects to have colonized the open ocean and can be found thousands of kilometers from the nearest land, surviving storms and wave action.

Large Larch Sawfly

A gregarious defoliator of larch in European forests. Larvae feed in groups and can rapidly strip branches of needles.

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Did You Know?

Defoliated larch trees produce a second flush of needles but suffer significant growth reduction.