Revision of the taxonomy of Polycirrus Grube, 1850 (Annelida: Terebellida: Polycirridae)
Author
Glasby, Christopher J.
chris.glasby@nt.gov.au
Author
Hutchings, Pat
chris.glasby@nt.gov.au
text
Zootaxa
2014
2014-10-21
3877
1
1
117
journal article
5268
10.11646/zootaxa.3877.1.1
344cf70d-6a17-464b-9a35-40324bcef9d4
1175-5326
4948375
2695A2A6-2805-4FC6-B6B6-A8C68354B944
Polycirrus boholensis
Grube, 1878
Fig. 11a–g
,
Table 1
Polycirrus boholensis
Grube, 1878: 242–243
, taf. XIII
Fig. 7
.
Not
Augener, 1914: 102
(=
Polycirrus broomensis
, see
Hutchings & Glasby, 1986: 334–336
, fig.
6g
–l).
Type
locality.
Bohol
,
Philippines
.
Material examined.
HOLOTYPE
:
ZMB
10654.
Philippines
,
Bohol
, leg Semper, coll.
Grube.
Description.
Holotype
poorly preserved with body wall damaged but parapodia and chaetae mainly intact, yellowish brown in colour, consists of five fragments that do not constitute an entire animal, all fragments only a few mm long; an anterior fragment consisting of 8 segments, mid-body fragment of 2 chaetigers, mid-posterior fragment of 12 chaetigers, and an extreme posterior fragment consisting of about 23 segments. Sex unknown.
Dorsum anteriorly smooth. Venter anteriorly with mid-ventral groove and poorly defined ventro-lateral pads; pads more-or-less smooth with few papillations anteriorly. Mid-ventral groove divided into small shields, from segment 3 to 5 (
Fig. 11a
).
Buccal tentacles of
two types
(
Hutchings & Glasby 1986
): (1) cylindrical, thickened distally, distinctly grooved (these now missing on
type
, see
Fig. 11a
) and (2) cylindrical, uniformly thin, weakly grooved; both
types
arising at junction between prostomium and upper lip. Prostomial ridge slightly curved, extending laterally. Upper lip trefoiled, with lateral, blindly ending, enclosed diverticulae (surface of diverticula with many small tentacles), margin of medial lobe thickened and overturned; oral surface glandular and ciliated. Inner lower lip oblong, smooth; outer region with subconical lobe protruding above venter, recurved posteriorly, smooth. Achaetous segments visible dorsally but obscured ventrally.
Notochaetigerous segments 10 or 11, extending to segments 12 or 13. Notopodial prechaetal lobe low, postchaetal lobe digitiform, longer than prechaetal (
Fig. 11b
). Notochaetae within a chaetiger of
two types
(anterior body chaetiger examined), pinnate, posteriorly same form as those anteriorly; secondary notochaetae in all chaetigers smooth, narrowly winged, uniformly tapered (
Fig. 11c–e
). Neurochaetae beginning on segment 14. Neuropodial tori ridge like, similar along body. Uncini with long neck and concave base (
Type
2), teeth above main fang arranged in double transverse series (MF:1:8), enlarged median tooth above main fang present, subrostral process absent (
Fig. 11f–g
).
Nephridial papillae not visible.
Comments.
Hutchings & Glasby (1986)
redescribed this species based on the
holotype
and additional specimens from NE
Australia
. They reported that neurochaetae begin from segment 13–15 and that the
holotype
had 10 or 11 notochaetigerous segments, although Grube mentions 12, possibly 13 (
Table 1
).