Reasoning recorded at review

• •Bat-wing gastropterid body with very large elongate parapodia
• •Clear to translucent-white body and foot
• •Numerous small canary-yellow spots across the parapodia, head shield and foot
• •Small orange spots and a narrow orange line along the parapodial margins
• •No distinct dorsal flagellum visible

Alternatives considered

• Sagaminopteron pohnpei

  Why plausible: The primary revision identifies this as the closest externally similar congener and both lack a flagellum

  Comparison: S. pohnpei is described as brown, orange, red or black rather than this pale yellow-spotted morph; definitive separation uses penial anatomy

• Gastropteron multo

  Why plausible: Another pale bat-winged slug with orange marks

  Comparison: G. multo has two flagellar processes, brown/orange patches and an elongate pointed foot, unlike the yellow-spotted no-flagellum combination here