Southern Long-legged Fly vs Spangle Gall Wasp

Side-by-side species comparison

Attribute Southern Long-legged Fly Spangle Gall Wasp
Scientific Name Chrysotus gramineus Neuroterus quercusbaccarum
Order Diptera Hymenoptera
Family Dolichopodidae Cynipidae
Size 2-3 mm 1.5–2.5 mm
Habitat Ponds & Lakes Woodlands
Diet Herbivores Herbivores
Regions Europe, Asia, North America Europe
Conservation Least Concern Not Evaluated

Southern Long-legged Fly

A tiny, brilliantly metallic green long-legged fly commonly found on vegetation near water. It runs rapidly across leaf surfaces hunting for small prey.

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Did You Know?

Despite their tiny size, dolichopodid flies are among the most species-rich predatory fly families globally.

Spangle Gall Wasp

A tiny gall wasp that produces flat, disc-shaped spangle galls on the undersides of oak leaves. It alternates between two distinct gall forms across generations.

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Did You Know?

A single oak leaf may carry over a hundred spangle galls, yet the tree suffers minimal harm.