Giant Water Strider vs Thyridanthrax Bee Fly

Side-by-side species comparison

Attribute Giant Water Strider Thyridanthrax Bee Fly
Scientific Name Gigantometra gigas Thyridanthrax fenestratus
Order Hemiptera Diptera
Family Gerridae Bombyliidae
Size 18-24 mm body, 250 mm leg span 8-14 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Parasitoids
Regions Vietnam, Southern China, Southeast Asia Southern Europe, North Africa, Middle East
Conservation Data Deficient Least Concern

Giant Water Strider

The largest water strider in the world, found in Southeast Asian streams. Its leg span can reach over 25 cm across the water surface.

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Did You Know?

With a leg span exceeding 25 centimeters, it is the undisputed giant of the water strider world.

Thyridanthrax Bee Fly

A bee fly with distinctive clear 'windows' in otherwise dark wings, found in sandy habitats across southern Europe. Larvae are parasitoids of tiger beetle and solitary wasp larvae.

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Did You Know?

The translucent 'windows' in its dark wings may help break up its outline, camouflaging it against dappled sandy ground.