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

52 Kuroshio Biosphere : BULL. BIOL. INST. KUROSHIO Vol. 1, 2004
a ventral cirrus (Fig. 9, D-E). Notopodial part of the median parapodium with a cirrophore
and a cirrostyle. Notopodial cirrophore not so long, with a constriction near distal end (Fig.
9, E). Each notopodium with a single aciculum, and the tip of aciculum reached to ventral
side of the constriction (Fig. 9, E). A small bundle of notosetae beside the aciculum tip.
Notosetae firstly appeared from 3rd to 6th setiger, and 1-10 setae in each fascicle. Each
median neuropodium with a single aciculum (Fig. 9, D-E). Neuropodial presetal lobe as a
triangular sheet, and its proximal part extended to parapodial full width. The distal part of
the presetal lobe rather narrow, and with dully pointed apex (Fig. 9, D-E). Neuropodial
postsetal lobe formed semi-circular or wide triangular edge (Fig. 9, D-E). With ca. 18
supla-acicular and ca. 25 sub-acicular setae in median neuropodia. Neurocirri long subulate,
inserted ventro-lateral corner of parapodia, but shifted distally comparing with other species
of the genus (Fig. 9, D-E).
Fig. 9. Ophiodromus fauveli, n. sp.
A, anterior part, with proboscis protruded, dorsal view, white markings shown as dotted areas; B, the same, with
proboscis not protruded, dorsal view (from Holotype); C, posterior part, ventral view (from Holotype); D, right
23rd parapodium, anterior view; E, the same, posterior view; F, notoseta; G, simple capillary notoseta in right
33rd parapodium, parapodial epidermis shown as proximal line; H, superior supla-acicular compound falciger; I,
inferior supla-acicular falciger; J, superior sub-acicular falciger; K, inferior sub-acicular falciger; L, tip of shaft
of compound seta. Scale by B, A: 1.25 mm; B-C: 1 mm; Scale by E, D: 0.5 mm; E: 200 µm; F: 20
µm, G-L: 50 µm.