HESIONIDAE (ANNELIDA, POLICHAETA) FROM JAPAN. I. by Hiro ...

72 Kuroshio Biosphere : BULL. BIOL. INST. KUROSHIO Vol. 1, 2004
(Fig. 17, D). Accompanied acicular seta with a slender fine tip (Fig. 17, D). Compound
hooks or claw setae in neuropodia of the first setiger usually folded at the joint (Fig. 16,
H). Hooks stout, more than twice as thick as accompanied compound setae. Non-folded
form of the hook is shown as an outer one in Fig. 16, F. Form of hooks similar to those in
the species of the genus Branchiosyllis (Sylliidae). Neuropodia in the second setiger with
only compound setae of normal form (Fig. 17, A). All compound neurosetae similar each
other except for the length of blade (Fig. 17, E-F). Distal part of blade with a hooked
main tooth, together with a minute spinous tooth above it. Free margin of blade very finely
serrated or almost smooth. Proximal stout aciculum long with a blunt tip (Fig. 17, C).
Distal slender aciculum short with a fine tip (Fig. 17, A-C). Simple seta in posterior
neuropodia slender with a merely hooked fine tip (Fig. 17, I).
Fig. 17. Uncopodarke intermedia, n. Gen., n. sp.
A, right 2nd parapodium, anterior view; B, left 8th parapodium, posterior view; C, same, anterior view; D,
notosetae in left 8th notopodium; E-F, neuropodial compound setae; G, right 39th parapodium, anterior view;
H, neuropodium of the left last setiger; I, simple seta from the last setiger. Scale, A, C, and H: 50 µm, B
and G: 100 µm, D-F and I: 20 µm.