Glyceriformia Fauchald, 1977 (Annelida: “ Polychaeta ”) from Lizard Island, Great Barrier Reef, Australia
Author
Böggemann, Markus
text
Zootaxa
2015
4019
1
journal volume
10.11646/zootaxa.4019.1.7
0b1bed86-d67e-4fa2-937b-e7b043b59c8a
1175-5326
240217
7E7B2CC8-91FB-4724-A4E2-ED74307CDCD5
Goniada emerita
Audouin & Milne Edwards, 1833
(
Fig. 14
)
Goniada emerita
Audouin & Milne Edwards, 1833
: 268
; pl. 18, figs 1–4.
Material examined.
AM W.44865, MI QLD 2435, af/25/117/1.7/0.9.
Diagnosis.
Proboscis with a few different
types
of papillae; 4–26 pairs of chevrons; 46–69 uniramous chaetigers, following biramous; acicular notochaetae situated between dorsal cirrus and notopodium, neurochaetae compound spinigers.
Description.
Anterior fragment
25 mm
long with 117 chaetigers. Segments uni-annulate, but median part of dorsum usually appears to be bi-annulate.
Conical prostomium consisting of 9–10 rings; terminal annulus with four biarticulate appendages and basal one with pair of nuchal organs. Pair of basal subdermal eyes present (
Fig. 14
A).
Proboscis with predominantly heart-shaped to rectangular papillae on short stalks in more or less longitudinal rows. Macrognaths quinquedentate (with 5 teeth); 13 H+v/w-shaped dorsal and 14 H+v/w-shaped ventral compound micrognaths, dorsal arc additionally with four smaller, simple rod-like micrognaths in outer position and between other ones. Six chevrons on each side of proboscis.
First segment partly apodous and achaetous; typical pair of small lateral cirri missing (
Fig. 14
A). First chaetiger mainly with only one neuropodial pre- and one postchaetal lobe; second, lower prechaetal lobe developed from chaetiger two; both prechaetal lobes digitiform, upper one slightly broader and longer than lower one; conical to triangular postchaetal lobe always distinctly shorter (
Fig. 14
B–C). 66 uniramous chaetigers, following parapodia biramous with conical to triangular notopodial lobes (
Fig. 14
D–F). From 66th chaetiger parapodia enlarged and with noto- and neuropodia clearly separated. Dorsal cirri on anterior chaetigers digitiform, about as long as neuropodial postchaetal lobes or slightly shorter (
Fig. 14
B–C); in biramous parapodia more conical and about as long as notopodial lobes (
Fig. 14
D–F). Ventral cirri in anterior parapodia digitiform, about as long as neuropodial postchaetal lobes or slightly longer (
Fig. 14
B–C); in enlarged biramous parapodia more conical, about as long as neuropodial postchaetal lobes or slightly shorter (
Fig. 14
D–F).
FIGURE 14.
Goniada emerita
Audouin & Milne Edwards, 1933
, AM W.44865. A. Anterior end, dorsal view; B–F. Anterior to mid-body parapodia, posterior view, aciculae suggested, neurochaetae omitted.
Noto- and neuropodia each with a single acicula (
Fig. 14
B–F). Usually two acicular notochaetae with straight tip, situated between dorsal cirrus and notopodium (
Fig. 14
D–F). Neurochaetae compound spinigers with blades of different lengths.
Distribution.
Lizard Island, Macgillivray Reef;
14–
18 m
.