Comprehensive DescriptionRead full entry
DescriptionArrhis phyllonyx is a compact gammarid amphipod. It has a laterally compressed but moderately cylindrical body consisting of a head with two pairs of antennae, seven thoracic segments and limbs forming a pereon and six abdominal segments and limbs forming a pleon as well as a tail with three limbs. The head has a conspicuous downturned rostrum. The eyes are more or less joined dorsally. The telson is relatively small but entire. It is pale orange in colour. Little is known about the maximum size of Arrhis phyllonyx.