Clavadoce (Annelida: Phyllodocidae) from Australia.

Area of Science:

• Marine Biology
• Zoology
• Taxonomy

Background:

• The genus Clavadoce, belonging to the Phyllodocidae family, previously had limited known distribution.
• Understanding the global distribution of marine invertebrate species is crucial for biodiversity assessments.

Purpose of the Study:

• To report the first occurrence of the genus Clavadoce in Australia.
• To reclassify the species Eumida (Sige) dorsolobata Hartmann-Schröder, 1987.
• To expand the known geographic range of the genus Clavadoce.

Main Methods:

• Taxonomic identification based on morphological characteristics.
• Re-evaluation of existing species descriptions and taxonomic placement.
• Geographic distribution surveys in intertidal habitats.

Main Results:

• The genus Clavadoce is recorded for the first time in Australia.
• The species Eumida (Sige) dorsolobata is transferred to the genus Clavadoce, becoming Clavadoce dorsolobata comb. nov.
• Clavadoce dorsolobata is found to be widely distributed in intertidal habitats of southeastern Australia.
• This represents the first record of Clavadoce in the Southern Hemisphere.
• Globally, five species of Clavadoce are now recognized, with four on the Pacific Ocean margin and one in the North Atlantic.

Conclusions:

• The discovery of Clavadoce dorsolobata in Australia significantly expands the known range of the genus.
• This finding highlights the importance of continued exploration of marine biodiversity in under-surveyed regions.
• The reclassification of Eumida (Sige) dorsolobata contributes to the taxonomic clarity of the Phyllodocidae family.