イワホリコツブムシ体表に生息するウミミズムシ科の1新種

Key Points

• The aim is to describe a new species of Iais found on the surface of Sphaeroma wadai.
• Detailed morphological examination of the new species.
• Comparison with known species, particularly Iais singaporensis.
• Observation of symbiotic density and reproductive rates.
• Iais tanabensis differs morphologically from Iais singaporensis with distinct features.
• Unique characteristics include specific claw counts and body shape.
• Documented changes in symbiotic density and brood female ratios over time.