New Caledonian Imperial Pigeon Louse vs Holly Blue

Side-by-side species comparison

Attribute New Caledonian Imperial Pigeon Louse Holly Blue
Scientific Name Columbicola extinctus Celastrina argiolus
Order Phthiraptera Lepidoptera
Family Philopteridae Lycaenidae
Size 1-3 mm 26-34 mm wingspan
Habitat Underground Underground
Diet Parasites Nectar Feeders
Regions Oceania (New Caledonia) Europe, North Africa, Asia, North America
Conservation Extinct Least Concern

New Caledonian Imperial Pigeon Louse

A chewing louse that was endemic to the now-extinct New Caledonian lorikeet. This species represents the coextinction phenomenon where parasites disappear with their hosts. It highlights the hidden biodiversity loss that accompanies vertebrate extinctions.

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Did You Know?

For every bird or mammal that goes extinct, an average of two to three unique parasite species disappear with it, representing a massive hidden wave of coextinction.

Holly Blue

Pale silvery-blue butterfly with small black dots on the underside. Alternates between holly and ivy as host plants between spring and summer broods.

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Did You Know?

Population numbers cycle dramatically every few years due to a parasitic wasp that tracks its abundance.