Ridged Water Scavenger Beetle vs Southern Long-legged Fly

Side-by-side species comparison

Attribute Ridged Water Scavenger Beetle Southern Long-legged Fly
Scientific Name Helochares obscurus Chrysotus gramineus
Order Coleoptera Diptera
Family Hydrophilidae Dolichopodidae
Size 4-6 mm 2-3 mm
Habitat Ponds & Lakes Ponds & Lakes
Diet Detritivores Herbivores
Regions Europe, North Africa Europe, Asia, North America
Conservation Least Concern Least Concern

Ridged Water Scavenger Beetle

A small brown water beetle found in well-vegetated ponds across Europe. Females carry their egg sacs beneath the body until the larvae hatch.

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Did You Know?

The female carries her egg case attached to the underside of her body, a rare form of parental care in beetles.

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.