Amphoroidea falcifer

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Amphoroidea falcifer
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Isopoda
Suborder: Flabellifera
Family: Sphaeromatidae
Genus: Amphoroidea
Species: A. falcifer
Binomial name
Amphoroidea falcifer
G. Thomson, 1879

Amphoroidea falcifer is an isopod of the family Sphaeromatidae, endemic to New Zealand. It is found subtidally on the fronds of the kelp Ecklonia radiata. Its length is up to 15 mm.

The axe-like front end is formed from enlarged basal segments of the first pair of feelers (antennules). Amphoroidea falcifer maintains its grip on kelp fronds with its strong claws and toothed pads at the tips of its seven pairs of walking legs. It swims powerfully using the paddle-like rear limbs (the pleopods). It feeds on the surface layers of kelp which are cut with the jaws and thrust into the mouth with other special feeding limbs. Coloration is the same golden brown as the Ecklonia radiata on which it exclusively lives, giving it superb camouflage.

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