Serpulidae
Creators: name: Sun, Yanan
name: Ten, Harry A.
name: Qiu, Jian-Wen
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Polychaeta
Sabellida
Serpulidae

description: Key to species of Serpulidae from Hong Kong
1 With operculum...................................................................................... 2
- Without operculum.................................................................................. 21
2(1) Opercular peduncle with wings........................................................................... 3
- Opercular peduncle without wings....................................................................... 9
3(2) Operculum with calcareous end plate....................................................... Spirobranchus … 4
- Operculum with chitinous column bearing several serrated disks........................... Pomatostegus actinoceras
4(3) Collar without chaetae; operculum without projection...................................... Spirobranchus kraussii
- Collar with chaetae; operculum variable................................................................... 5
5(4) Operculum terminated by white calcareous plate or cap...................................................... 6
- Operculum terminated by semi-transparent, almost brown/purplish thinly calcareous cap...... Spirobranchus cf. polytrema
6(5) Operculum with one calcareous plate...................................................................... 7
- Operculum with more than four successive calcareous plates.................................................. 8
7(6) Operculum with a pair of horns............................................. Spirobranchus corniculatus- complex
- Operculum with three branched spines................................................. Spirobranchus tetraceros
8(6) Operculum with four to five calcareous plates and a horn on apex.............................. Spirobranchus sp. A
- Operculum with eight to ten calcareous plates, without horns................................... Spirobranchus sp. B
9(2) Peduncle flattened, ribbon-like.................................................... Metavermilia acanthophora
- Peduncle cylindrical................................................................................. 10
10(9) Opercular peduncle annulated anteriorly............................................... Vermiliopsis glandigerus
- Opercular peduncle smooth, not annulated................................................................ 11
11(10) Operculum complex, with proximal funnel and distal verticil...................................... Hydroides … 12
- Operculum simple funnel..................................................................... Serpula … 20
12(11) Spines of verticil with T-shaped tips...................................................... Hydroides diramphus
- Spines of verticil with acute tips........................................................................ 13
13(12) Verticil spines with external spinules................................................... Hydroides sanctaecrucis
- Verticil spines without external spinules.................................................................. 14
14(13) Verticil spines with lateral spinules..................................................................... 15
- Verticil spines without lateral spinules................................................................... 16
15(14) Verticil spines with one pair of outer lateral spinules in the middle........................ Hydroides tambalagamensis
- Verticil spines with three to four pairs of lateral spinules....................................... Hydroides elegans
16(14) Verticil spines similar in shape and size................................................................... 17
- Verticil spines with one or more spines larger than others.................................................... 18
17(16) Peduncle long, with a long yellowish chitinized constriction; verticil spines six, thin............... Hydroides longistylaris
- Peduncle without a long chitinized constriction; verticil spines five, broad rhomboid............. Hydroides rhombobulus
18(16) Tip of verticil spines blunt................................................................ Hydroides albiceps
- Tip of verticil spines pointed........................................................................... 19
19(18) Smaller spines of verticil curving inward................................................ Hydroides operculatus
- Smaller spines of verticil curving outward.................................................. Hydroides exaltatus
20(11) Opercular funnel deep with long radial grooves; with 33–35 radii.................................. Serpula watsoni
- Opercular funnel shallow; with 55–58 radii............................................... Serpula cf. granulosa
21 (2) Forms open colonies consisting of large number of tiny tubes................................... Salmacina cf. dysteri
- Solitary tubes.......................................................................... Protula bispiralis
description: Published as part of Sun, Yanan, Ten, Harry A. & Qiu, Jian-Wen, 2012, Serpulidae (Annelida: Polychaeta) from Hong Kong, pp. 1-42 in Zootaxa 3424 on page 6, DOI: 10.5281/zenodo.213363