Anophthalmus Cave Beetle vs Common Alderfly

Side-by-side species comparison

Attribute Anophthalmus Cave Beetle Common Alderfly
Scientific Name Anophthalmus hitleri Sialis lutaria
Order Coleoptera Megaloptera
Family Carabidae Sialidae
Size 5-6 mm 12-16 mm
Habitat Caves Ponds & Lakes
Diet Predators Predators
Regions Slovenia (a few caves near Celje) Europe, Asia
Conservation Vulnerable Least Concern

Anophthalmus Cave Beetle

A small, blind, depigmented cave beetle found in only a handful of caves in Slovenia. It has elongated legs and antennae for navigating in total darkness and was described in 1937.

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Did You Know?

Its unfortunate scientific name, given in 1937, has made it a target for collectors who prize specimens for the name alone, contributing to its rarity.

Common Alderfly

A dark smoky-winged insect commonly found near still or slow-moving waters across Europe. Its aquatic larvae are predators in lake and pond sediments.

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Did You Know?

Alderfly females lay hundreds of eggs in neat rows on vegetation overhanging water, and the larvae drop into the water upon hatching.