Review of Orbiniidae (Annelida, Sedentaria) from Australia
Author
Zhadan, Anna
text
Zootaxa
2020
2020-10-14
4860
4
451
502
journal article
8231
10.11646/zootaxa.4860.4.1
1f5ee6c2-2635-44a8-8469-49319b7a8c62
1175-5326
4414137
876F1085-5296-4340-A951-41420C011917
Phylo novazealandiae
Day, 1977
Figure 24
Phylo novazealandiae
Day, 1977: 235–237
, fig. 3f–j.
Material examined.
New Zealand
:
Pauatahanui
,
41°S
,
174°E
,
May 1960
, coll.
I. Estcourt
,
AM
W.7447,
3 specimens
,
paratypes
.
Type
locality.
Tasman
Bay
,
New Zealand
.
Description
. All specimens studied incomplete. Thoracic width 2, 2.4, and 2.8 mm. Prostomium bluntly conical (
Fig. 24
C–E). Thoracic chaetigers numbering 15 (
Fig. 24A, C, D, E
). Branchiae from chaetiger 5, wide triangular, foliaceous, in abdomen becoming long triangular with widened base and tapering tips, longer than notopodia (
Fig. 24C, E, J, K
). Thoracic notopodial postchaetal lobes developed from first chaetiger, from digitiform to foliaceous, in abdomen becoming elongate, in anterior part, foliaceous with wide base, in posterior narrow digitate (
Fig. 24A, C, E, I, J
). Thoracic postchaetal neuropodial lobes as ridges with up to 9 papillae, upper papillae larger than lower (
Fig. 24B, D, E, G
). Subpodal papillae present on last thoracic and first two abdominal chaetigers, few stomach papillae only in first two abdominal chaetigers (
Fig. 24A, B, D, E
). Abdominal neuropodia bilobed with subequal short lobes; subpodal flange developed, with papilla (ventral cirrus). Interramal cirrus small, shorter than neuropodia (
Fig. 24B, E, F, J
). Notopodial chaetae crenulate capillaries, in abdominal notopodia also forked chaetae present (
Fig. 24J
). Thoracic neuropodia bearing 2–3 rows of thin curved serrated uncini and posterior row of capillaries; posterior thoracic chaetigers bearing very thick brown straight spines, upper one longer than others (
Fig. 24B, D, E
, G–I). Abdominal neurochaetae thin capillaries; both rami supported by thin straight aciculae in abdomen.
Distribution
.
New Zealand
.
Habitat.
Subtidal.
Remarks.
The specimens studied here are in agreement with the description by
Day (1977)
.