California Department of Fish and Wildlife
Aquatic Biological Assement

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Lutrochidae Level 1 Level 2

Lutrochidae

Adults:

Larvae:

 

Key Characters (adult)

Travertine beetles. Found in streams on submerged or emergent rocks or wood. Body ovate and very convex; body size 2-6 mm; antennae 11-segmented, but very short, segments 3-11 about as long as segments 1+2;

Key Characters (larva)

Larvae elongate, tapering; head large; 9 abdominal segments; operculum present, covering retractile gills, 2 hooks present; legs 5-segmented, but short.
Tolerance unknown
Distribution AZ