Goniada antipoda Augener, 1927

Böggemann, Markus, 2015, Glyceriformia Fauchald, 1977 (Annelida: “ Polychaeta ”) from Lizard Island, Great Barrier Reef, Australia, Zootaxa 4019 (1) : -

Goniada antipoda Augener, 1927

( Fig. 11 )

Goniada antipoda Augener, 1927: 202 , textfig. 10a–b. Synonyms see Böggemann 2005

Material examined. AM W.47206, MI QLD 2440, af/8/43/1.0/0.5.

Diagnosis. Prostomium with pointed tip; proboscis with slightly different types of papillae; only four inverted Y-shaped and rod-like dorsal and usually five H+v/w-shaped ventral compound micrognaths; 4–12 pairs of chevrons; lower neuropodial prechaetal lobe developed from parapodium 2–13; 26–44 uniramous chaetigers, following biramous with single lobed notopodia; notochaetae capillaries, neurochaetae compound spinigers.

Description. Anterior fragment 8 mm long with 43 chaetigers. Segments uni-annulate, but median part of dorsum usually appears to be bi-annulate.

Conical prostomium consisting of about ten rings; terminal annulus with four biarticulate appendages and pointed tip, basal one with pair of nuchal organs. Eyes absent ( Fig. 11 A).

Proboscis with predominantly heart-shaped papillae on short stalks in more or less longitudinal rows. Macrognaths hexadentate; dorsal arc with four smaller, simple micrognaths, superior pair rod-like and inferior pair inverted Y-shaped, both with bifid tips, ventral arc with three H+v/w-shaped compound micrognaths. Five chevrons on each side of proboscis.

First chaetigers with only one neuropodial pre- and one postchaetal lobe; second, lower prechaetal lobe developed from chaetiger five; both prechaetal lobes digitiform and of about same length, upper one slightly broader than lower one; conical to triangular postchaetal lobe always distinctly shorter ( Fig. 11 B–D). 37 uniramous chaetigers, following parapodia biramous with conical to triangular notopodial lobes ( Fig. 11 E–F). From 34th to 35th chaetiger parapodia enlarged and with noto- and neuropodia clearly separated. Dorsal cirri on anterior chaetigers digitiform, about as long as neuropodial postchaetal lobes ( Fig. 11 B–D); in biramous parapodia more conical and slightly longer than notopodial lobes ( Fig. 11 E–F). Ventral cirri in anterior parapodia digitiform, about as long as neuropodial postchaetal lobes or slightly longer ( Fig. 11 B–D); in enlarged biramous parapodia more conical, slightly shorter than neuropodial postchaetal lobes ( Fig. 11 E–F).

Noto- and neuropodia each with a single acicula ( Fig. 11 B–F). Notochaetae capillaries. Neurochaetae compound spinigers with blades of different lengths.

Remarks. The specimen is very small and therefore only three ventral micrognaths are present instead of the typical five ones.

Distribution. Lizard Island; 14 m.

Figures

FIGURE 11. Goniada antipoda Augener, 1927, AM W. 47206. A. Anterior end, dorsal view; B – F. Anterior to mid-body parapodia, posterior view, aciculae suggested, chaetae omitted.