Fig. 4 in Taxonomic diversity of marine planktonic 'y-larvae' (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii

Fig. 4. Planktotrophic (feeding) y-nauplius of morphospecies Type A*. A. Ventral view. B. Lateral view. C. Naupliar feeding apparatus of right side. D. Postero-lateral spines of left side, dorso-caudal organ, dorso-caudal spine and furcal spines. The naupliar feeding apparatus, postero-lateral spines, dorsocaudal organ and dorso-ventrally flattened body (especially the first of these) are the key characters for separating planktotrophic y-nauplii from lecithotrophic y-nauplii. Abbreviations: Bas = basis; Cox = coxa; En = endopod; 1–3 = postero-lateral spine rows on trunk.