Amphiglena maiteae

Capa, María & Murray, Anna, 2015, A taxonomic guide to the fanworms (Sabellidae, Annelida) of Lizard Island, Great Barrier Reef, Australia, including new species and new records, Zootaxa 4019 (1), pp. 98-167: 102-103

publication ID

http://dx.doi.org/10.11646/zootaxa.4019.1.8

publication LSID

lsid:zoobank.org:pub:8C14F828-F8FB-4783-928B-399B33B4246D

persistent identifier

http://treatment.plazi.org/id/039D9472-FFDF-2A31-DA94-0C3AD022C814

treatment provided by

Plazi

scientific name

Amphiglena maiteae
status

 

Amphiglena maiteae  Capa & Rouse, 2007

( Fig. 1View FIGURE 1)

Amphiglena maiteae  Capa & Rouse, 2007: 345 –348, figs 4 I –J, 8.

Material examined. AM W. 44465, MI QLD 2419; AM W. 44470, MI QLD 2437.

Description of material examined. Specimens up to 2.5 mm long, 0.2 mm wide, with 7–8 thoracic and 9–19 abdominal chaetigers. Live specimens unpigmented, with orange gut observed through transparent body and with clearly distinguishable white ventral shields ( Fig. 1View FIGURE 1 A). Red peristomial eyes and pygidial eyespots. Preserved specimens unpigmented with eyespots faded to dark brown ( Fig. 1View FIGURE 1 B). Methyl blue stains only ventral shields in ethanol-fixed specimens ( Fig. 1View FIGURE 1 C). Radiolar crown with semicircular lobes, and four pairs of radioles ( Fig. 1View FIGURE 1 A). Dorsal basal flanges absent. Ventral basal flanges extend from the proximal pinnule of the ventralmost radiole, continuing and fused to the posterior peristomial ring, with a transverse incision (synapomorphy for the genus, Fig. 1View FIGURE 1 D, white arrow). Basal membrane and radiolar flanges absent. Two rows of vacuolated cells supporting radioles basally. Radiolar eyes absent. Dorsal lips with medium-length dorsal radiolar appendages. Dorsal pinnular appendages absent. Ventral lips, parallel lamellae and ventral sacs absent. Posterior peristomial ring collar absent. Glandular ridge on anterior chaetigers absent ( Fig. 1View FIGURE 1 C). Interramal eyespots absent. Thoracic ventral shields separated from the neuropodial tori by a narrow gap ( Fig. 1View FIGURE 1 C). First chaetiger with narrowly-hooded superior chaetae and broadly-hooded inferior notochaetae in oblique rows. Following thoracic chaetigers with low notopodia, bearing superior elongate broadly-hooded and inferior paleate chaetae ( Fig. 1View FIGURE 1 E). Thoracic neuropodial uncini avicular, with more than five rows of small, similar-sized teeth covering half the main fang ( Fig. 1View FIGURE 1 F), breast well developed, handle of medium length. Companion chaetae geniculate, with straight shaft and elongate mucro with a dentate appearance at base ( Fig. 1View FIGURE 1 E–F). Abdominal neuropodia inconspicuous with broadly-hooded neurochaetae ( Fig. 1View FIGURE 1 G). Abdominal notopodia with up to four uncini per torus, uncini with more than five rows of small similar-sized teeth above the main fang ( Fig. 1View FIGURE 1 H), well developed breast, and short handle. Pre-pygidial abdominal depression absent. Pygidium conical with eyespots on lateral margins of pygidium ( Fig. 1View FIGURE 1 B). Pygidial cirrus absent ( Fig. 1View FIGURE 1 I). Tube unknown.

Remarks. Amphiglena maiteae  is distinguished from other congeners by a unique combination of features: four pairs of radioles with about 10 pairs of pinnules that are longer towards the distal end of the radioles, ventral basal flanges from the proximal pinnule of the ventralmost radiole, extending to the posterior peristomial ring, and thoracic uncini with medium-sized handles ( Capa & Rouse 2007). First record from Queensland.

Habitat. On rocks, boulders and associated algae from the intertidal. Type locality. Lennox Head, New South Wales.

Distribution. Australia (New South Wales, Queensland).

Kingdom

Animalia

Phylum

Annelida

Class

Polychaeta

Order

Sabellida

Family

Sabellidae

Genus

Amphiglena

Loc

Amphiglena maiteae

Capa, María & Murray, Anna 2015

2015
Loc

Amphiglena maiteae

Capa 2007: 345

2007