Cave Cixiid vs Lucifugous Springtail

Side-by-side species comparison

Attribute Cave Cixiid Lucifugous Springtail
Scientific Name Oliarus polyphemus Megalothorax minimus
Order Hemiptera Collembola
Family Cixiidae Neelidae
Size 4-6 mm 0.3-0.5 mm
Habitat Caves Caves
Diet Sap Feeders Omnivores
Regions Hawaii, Big Island Worldwide
Conservation Vulnerable Least Concern

Cave Cixiid

A remarkable cave-adapted planthopper from Hawaiian lava tubes that has lost its eyes and wings. Its body is pale and depigmented, adapted to complete darkness.

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Did You Know?

This eyeless cave-dwelling planthopper was one of the first species used to study speciation in cave systems, with different populations in separate lava tubes diverging into distinct species.

Lucifugous Springtail

One of the smallest known hexapods, found in deep soil and cave environments. It is nearly transparent and extremely difficult to observe.

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Did You Know?

At about 0.3 mm, it is among the tiniest hexapods on Earth.