taxonID	type	description	language	source
C76287D7FFE90F3098A498CBFD99FAB5.taxon	description	Figure 6	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFE90F3098A498CBFD99FAB5.taxon	materials_examined	Type material examined. Lectotype (MNHN TYPE 568) 1 Adult, Chausey Island, France, English Channel, Atlantic. Paralectotype (MNHN TYPE 567) 1 Adult, Chausey Island, France, English Channel, Atlantic. Additional material examined. (MNHN-A 39) 1 adult specimen, St. Vaast, Normandy, France, Atlantic Ocean, (R.) N ° 155 d, 1868. (MNHN-A 39) 1 adult specimen, St. Vaast, Normandy, France, Atlantic Ocean, (R.) N ° 155 f, 1868. (MNHN-A 39) 2 adult specimens, Pier of Croisic, France, Atlantic Ocean, L. du Réau, Fauvel collection, June 1908. (MNHN-A 39) 2 adult specimens, Tatihou Island, Normandy, France, Atlantic Ocean, 1895, Fauvel collection. (AZ 778 30 – 16) 2 adult specimens, Cosqueville, Normandy, France, Atlantic Ocean, 19 April 1909. (MNHN-A 39) 1 adult specimen M. P. Fauvel collection, 1895. (MNCN 16.01 / 2445) 1 adult specimen, between Cabo de San Antonio and Valencia Port, Spain, Mediterranean Sea, sta. F – 32, coll. G. San Martin. (MNCN 16.01 / 2446) 1 adult specimen, between Cabo de San Antonio and Valencia Port, Spain, Mediterranean Sea, sta. F 152, coll. G. San Martin. (ECO- SUR – P 2173) 1 adult specimen, Carnac, Morbihan, France, 21 Apr 1967, coll. F. Rullier. (ZIN RAS 1 / 11135) 1 adult specimen, Marsella, France, Mediterranean Sea, 1961. (MNHN-AZ 779) 2 adult specimens, France, Mediterranean Sea, 11 August 1919. (ZMB 3996) 1 adult specimen, Roscoff, Finisterre, France, Atlantic Ocean, coll. Grube.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFE90F3098A498CBFD99FAB5.taxon	description	Description. Specimens with L 10 = 3.7 – 9 mm, W 10 = 0.6 – 2.3 mm. Prostomium entire. Median antenna reaching from second peristomial ring to middle of the second chaetiger; lateral antennae reaching from second peristomial ring to first chaetiger; palps reaching from first to second peristomial ring. Palpostyles and ceratostyles without peduncle. Eyes present. Maxillary formula: MII 6 – 8 + 7 – 9, MIII 6 – 8, MIV 5 – 7 + 9 – 10 (Fig. 6 A – C). MI length from 0.5 mm to 1.2 mm, maxillary carriers’ length from 0.35 mm to 1.3 mm, closing system length from 0.1 mm to 0.2 mm, MII length from 0.55 mm to 1.2 mm, opening cavity length from 0.4 mm to 1 mm (Fig. 6 A – C). Pectinate branchiae starting from chaetigers 10 – 15 to chaetigers 22 – 43. The maximum number of branchial filaments from 9 to 22. Dorsal cirri conical, in median-posterior region 1.2 times longer than pre-branchial chaetigers. Prechaetal lobe as a transverse fold in all chaetigers. Chaetal lobe rounded in the anterior region, triangular in media-posterior parapodia. Postchaetal lobe tongue-shaped in pre-branchial chaetigers, conical in branchial chaetigers, inconspicuous in median-posterior chaetigers; well-developed in first 32 – 72 chaetigers. Ventral cirri digitiform in first chaetigers and posterior region; with a small swollen base from chaetigers 4 – 5 to chaetigers 37 – 78. Aciculae blunt, dark in the anterior region, amber in median-posterior parapodia. Limbate chaetae of two sizes in same chaetiger. Two types of pectinate chaetae: (1) in anterior chaetigers, 1 – 2 pectinate isodont narrow chaetae with 4 – 5 long and slender teeth, with oblique distal edge; (2) in median-posterior chaetigers, 4 – 5 pectinate isodont narrow chaetae with 10 – 13 short and slender teeth, with transverse distal edge. Compound spinigers present in first 23 – 53 chaetigers. Compound falcigers present in all parapodia, with blades of two lengths in anterior chaetigers, one length in median-posterior chaetigers. Subacicular hooks bidentate, amber, starting in chaetigers 24 – 38, with one or two hooks per chaetiger.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFE90F3098A498CBFD99FAB5.taxon	distribution	Distribution. English Channel, Western Mediterranean Sea.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFE90F3098A498CBFD99FAB5.taxon	discussion	Remarks. The species was recently redescribed by Molina-Acevedo (2018). For many years, P. bellii was considered as a widely distributed species since was recorded in the Northwest Atlantic Ocean, Grand Caribbean, Vietnam, and the Persian Gulf. However, a recent morphological revision restricts the distribution of P. bellii to the Northeast Atlantic and West Mediterranean Sea (Molina-Acevedo 2018). Some of these records were later described as a new species (Paucibranchia andresi Molina-Acevedo, 2018 from Massachusetts (USA), P. carrerai from Vietnam, and unnamed taxa Paucibranchia sp. 1 Molina-Acevedo, 2018 from the Gulf of Mexico), revealing the diversity hidden under the same name.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFEE0F3398A49BEBFC7CFE0D.taxon	description	Figure 1	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFEE0F3398A49BEBFC7CFE0D.taxon	materials_examined	Type material examined. Holotype (LACM-AHF POLY 6924) 1 adult specimen, one nautical mile south of eastern end of Hòn T ằm, Bay of Nha Trang, South China Sea, South Vietnam, 12 ° 09 ’ 43 ’’ N 109 ° 14 ’ 10 ’’ E, sta. 142 I, in mud, 13 m, 16 Feb 1960, coll. V. A. Gallardo. Additional material examined. (RRC UMTAnn 01028, RRC UMTAnn 01046, RRC UMTAnn 01048, RRC UMTAnn 01050, RRC UMTAnn 01052, RRC UMTAnn 01057, RRC UMTAnn 01058) 9 juveniles, Teluk Kalong, Kemaman, Terengganu, Malaysia, South China Sea, 4 o 15.720 ’ N 103 o 28.760 ’ E, sandy bottom, Day grab, 15 m, July 2012. (RRC UMTAnn 01020 – 27, RRC UMTAnn 01029 – 45, RRC UMTAnn 01047, RRC UMTAnn 01049, RRC UMTAnn 01051, RRC UMTAnn 01053 – 56, RRC UMTAnn 01059) 33 adult specimens, same data with juveniles.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFEE0F3398A49BEBFC7CFE0D.taxon	description	Description. Specimens with L 10 = 1.5 – 6.8 mm, W 10 = 0.4 – 1.8 mm. Prostomium entire (Fig. 1 A – B). Median antenna reaching from second peristomial ring to middle of the first chaetiger; lateral antennae reaching from middle of first peristomial ring to first chaetiger; palps reaching from first to second peristomial ring. Palpostyles and ceratostyles with peduncle. Eyes present (Fig. 1 A – B). Maxillary formula: MII 5 – 7 + 5 – 7, MIII 3 – 6, MIV 3 – 5 + 5 – 8 (Fig. 1 C). MI length from 0.4 mm to 1 mm, maxillary carrier length from 0.1 mm to 0.5 mm, closing system length from 0.005 mm to 0.1 mm, MII length from 0.2 mm to 0.7 mm, opening cavity length from 0.02 mm to 2 mm (Fig. 1 C). Pectinate branchiae (Fig. 1 D, I) starting from chaetigers 7 to 10 – 19. The maximum number of branchial filaments from 5 to 19. Dorsal cirri conical in anterior chaetigers (Fig. 1 H, E), filiform in following ones (Fig. 1 D, J), in median-posterior region twice times longer than pre-branchial chaetigers (Fig. 1 H, J). Prechaetal lobe as a transverse fold in all chaetigers. Chaetal lobe rounded in anterior region, triangular in media-posterior parapodia. Postchaetal lobe conical and well-developed in first 12 – 29 chaetigers; thinner and elongated in branchial chaetigers; inconspicuous in median-posterior chaetigers (Fig. 1 E – I). Ventral cirri conical in first chaetigers and posterior chaetigers; with a small swollen base from chaetigers 5 – 8 to 12 – 27 (Fig. 1 E – I). Aciculae blunt, translucent in all parapodia (Fig. 1 H – I). Limbate chaetae of two sizes in same chaetiger. Two types of pectinate chaetae: (1) in anterior chaetigers, 2 – 3 pectinate isodonts narrow chaetae with 6 – 9 long and slender teeth, with transverse distal edge (Fig. 1 K); (2) in median-posterior chaetigers, 5 – 6 pectinate isodonts narrow chaetae with 15 – 16 short and slender teeth, with oblique distal edge. Compound spinigers present in first 12 – 26 chaetigers (Fig. 1 L). Compound falcigers present in all parapodia (Fig. 1 L – N), with blades of two lengths in anterior chaetigers, one length in median-posterior chaetigers. Subacicular hooks bidentate, amber, starting in chaetigers 24 – 38, with up to 5 to 15 hooks per chaetiger (Fig. 1 O). Variation. We found nine juveniles (Fig. 1 A), one of them complete, with 37 chaetigers and a total length of 0.5 mm. The juveniles varied in L 10 = 1.5 to 1.9 mm, and W 10 = 0.35 to 0.5 mm. Two of the six juveniles presented only media and lateral antennae, the rest of the specimens had five appendages. Media / lateral antennae reached up to the second peristomial ring to first chaetiger; palps reached up to the middle of the first peristomial ring to the second peristomial ring. The maxillary formula varied: MII, 5 – 6 + 5 – 7, MIII, 5, MIV 3 + 6 – 7. Length of complete maxillary apparatus ranged from 0.5 to 0.65 mm, and its width from 0.2 to 0.3 mm. MI length varied from 0.35 to 0.45 mm. Maxillary carrier length from 0.15 to 0.25 mm, closing system length from 0.05 mm, MII length from 0.2 to 0.3 mm, opening cavity length 0.07 to 0.1 mm. Length of mandible varied from 0.4 to 0.5 mm. The last chaetiger with branchiae varied from 10 – 14, the number of chaetigers with branchiae from 4 – 8, the maximum number of branchial filaments varied from 5 – 7. Length of dorsal cirri (LDC) in pre-, branchial, and post-branchial region varied in the following form: LDC in chaetiger 4, from 0.15 to 0.25 mm; LDC in chaetiger 10, from 0.17 to 0.3 mm, LDC in chaetigers 20 – 40: from 0.2 to 0.4 mm. Width of dorsal cirri (WDC) in pre-branchial, and post-branchial regions varied in following: WDC in chaetiger 4, from 0.02 to 0.04 mm, WDC in chaetiger 10, from 0.02 to 0.03 mm, WDC in chaetigers 20 – 40, from 0.01 to 0.02 mm. Last chaetiger with postchaetal lobe developed in chaetigers 12 – 16. Ventral cirri with swollen base start in chaetigers 5 – 6 and end in chaetigers 12 – 16. Subacicular hooks start from chaetigers 13 to 19. Last chaetiger with compound spiniger in chaetigers 12 – 14. We found thirty adults’ specimens (Fig. 1 B), all incomplete, with L 10 from 2 to 6.8 mm, W 10 from 0.45 to 1.8 mm. Prostomial appendages extension varied in following: median antenna reach from second peristomial ring to middle of the first chaetiger; lateral antennae reach from the middle of the first peristomial ring to the first chaetiger; palps reach from the first to second peristomial ring. The maxillary formula varied: MII 5 – 7 + 5 – 7, MIII 3 – 6, MIV 3 – 5 + 5 – 8. Length of complete maxillary apparatus changed from 0.6 to 2.4 mm, and its width from 0.3 to 0.8 mm. MI length varied from 0.4 to 1 mm. Maxillary carrier length from 0.1 to 0.5, closing system length from 0.05 to 0.1 mm. MII length from 0.23 to 0.7 mm, opening cavity length from 0.07 to 0.2 mm. Length of mandible from 0.4 to 1.2 mm. The last chaetiger with branchiae varied from 13 – 19, the number of chaetigers with branchiae from 7 – 13, the maximum number of branchial filaments varied from 7 – 19. Length of dorsal cirri in pre-, branchial, and postbranchial region varied in the following: LDC in chaetiger 4, from 0.1 to 0.45 mm; LDC in chaetiger 10, from 0.2 to 0.6 mm, LDC in chaetigers 20 – 40: from 0.3 to 1.3 mm. Width of dorsal cirri in pre-, branchial, and post-branchial region varied in following: WDC in chaetiger 4, from 0.03 to 0.1 mm, WDC in chaetiger 10, from 0.02 to 0.25 mm, WDC in chaetigers 20 – 40, from 0.01 to 0.1 mm. Last chaetiger with postchaetal lobe developed in chaetigers 14 – 27. Ventral cirri with swollen base start in chaetigers 5 – 8 and end in chaetigers 13 – 27. Subacicular hooks start from chaetigers 14 – 23. Last chaetiger with compound spiniger in chaetigers 13 – 26.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFEE0F3398A49BEBFC7CFE0D.taxon	distribution	Distribution. South Vietnam, east coast of Peninsular Malaysia.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFEE0F3398A49BEBFC7CFE0D.taxon	discussion	Remarks. As indicated above, P. carrerai was part of the P. bellii species complex. Since the species was distinguishable morphologically, Molina-Acevedo (2018) proposed it as a new taxon from the Vietnam area. Herein, its distribution is extended to the southern part of the South China Sea, on the east coast of Peninsular Malaysia. The specimens assigned as the holotype and paratypes were collected 60 years ago and sustained various damage (cutting marks in the anterior region, loss of some parapodia, and extracted maxillary apparatus). For this reason, some details were overlooked in the original description. Herein, we compared the type material with fresh specimens collected in Malaysia, and we found they were similar in the prostomium, branchiae, branchial filament, parapodia and chaetae shapes. These details allowed us to confirm its identification as P. carrerai. However, two traits not observed in the original description, including a short peduncle at the base of the prostomial appendages and a pair of large, brown and reniform eyes, are now included herein.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFED0F3C98A49FB3FDB6FB95.taxon	materials_examined	Type material examined. Holotype (LACM-AHF POLY 724) 1 adult specimen, 2.2 miles ESE (bearing 114 ° T) from Los Angeles Light, Los Angeles County, California, USA, North Pacific, 33 ° 41 ’ 36 ’’ N 118 ° 12 ’ 37 ’’ W, R / V VELERO IV sta. 2107 – 52, in sand and mud, Hayward orange peel grab, 23. 77 m, 20 April 1952. Additional material examined. (LACM-AHF POLY 6953) 1 juvenile, off Palos Verdes, Los Angeles County, California, USA, 33.73320 ° N 118.40050 ° W, R / V OCEAN SENTINEL sta. 0106 – 3 D, 30 m, 10 January 2006, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACMAHF POLY 10195) 4 adult, 6.7 miles from Ventura Pier Light bearing 270 ° true north, Ventura, Ventura County, Southern California Bight, California, USA, 34 ° 16 ’ 15 ’’ N 119 ° 25 ’ 40 ’’ W, R / V VELERO IV sta. 5594 – 58, green mud, grab, 22 m, 30 January 1958, coll. Allan Hancock Foundation. (LACM-AHF POLY 6946) 5 adults, 1.8 miles bearing 062 ° true north from Point Fermin Light, Los Angeles County, California, USA, 33 ° 43 ’ 05 ’’ N 118 ° 15 ’ 43 ’’ W, R / V VELERO IV Sta. 6107 – 59, black silt, Hayward orange peel grab, 13 m, 19 February 1959, coll. Allan Hancock Foundation. (LACM-AHF POLY 6955) 1 adult, Los Angeles County, California, USA, 33.81170 ° N 118.44170 ° W, R / V OCEAN SENTINEL sta. 0191 – 0 B, 152 m, 16 January 1991, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6956) 1 specimen, off Palos Verdes, Los Angeles County, California, USA, 33.75730 ° N 118.44100 ° W, R / V OCEAN SENTINEL sta. 0191 – 1 C, 61 m, 16 January 1991, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6957) 1 adult, off Palos Verdes, Los Angeles County, California, USA, 33.73770 ° N 118.42320 ° W, R / V OCEAN SENTINEL sta. 0192 – 2 C, 61 m, 22 January 1992, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6958) 1 adult, off Palos Verdes, Los Angeles County, California, USA, 33.66850 ° N 118.29680 ° W, R / V OCEAN SENTINEL sta. 0193 – 10 C, 61 m, 14 January 1993, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6960) 1 adult, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0196 – 0 C, 61 m, 24 January 1996, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6961) 1 adult, off Palos Verdes, Los Angeles County, California, USA, 33.73000 ° N 118.40250 ° W, R / V OCEAN SENTINEL sta. 0197 – 3 C, 61 m, 15 January 1997, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM - AHF POLY 6964) 2 adults, off Palos Verdes, Los Angeles County, California, USA, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0702 – 0 C 2, 61 m, 17 July 2002, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6965) 2 adults, off Palos Verdes, Los Angeles County, California, USA, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0790 – 0 C 1, 61 m, 18 July 1990, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6967) 2 adults, off Palos Verdes, Los Angeles County, California, USA, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0793 – 0 C 1, 61 m, 14 July 1993, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6968) 1 adult, off Palos Verdes, Los Angeles County, California, USA, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0794 – 0 C, 61 m, 21 July 1994, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6969) 2 adults, off Palos Verdes, Los Angeles County, California, USA, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0795 – 0 C 1, 61 m, 14 July 1995, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6970) 1 adult, off Palos Verdes, Los Angeles County, California, USA, 33.80720 ° N 118.43050 ° W, R / V OCEAN SENTINEL sta. 0796 – 0 C 1, 61 m, 11 July 1996, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6972) 1 adult, off Palos Verdes, Los Angeles County, California, USA, 33.73320 ° N 118.40050 ° W, R / V OCEAN SENTINEL sta. 0798 – 3 D, 30 m, 15 July 1998, coll. Los Angeles County Sanitation District, Marine Biology Laboratory. (LACM-AHF POLY 6974) 1 adult, off Palos Verdes, Los Angeles County, California, USA, R / V OCEAN SENTINEL sta. W 30, 10 November 1997, coll. Los Angeles County Sanitation District, Marine Biology Laboratory.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFED0F3C98A49FB3FDB6FB95.taxon	description	Description. Specimens with L 10 = 1.2 – 6.4 mm, W 10 = 0.3 – 4 mm. Prostomium entire. Median antenna reaching from first peristomial ring to third chaetiger; lateral antennae reaching from second peristomial ring to the middle of second chaetiger; palps reaching from the middle of first peristomial ring to middle of the first chaetiger. Palpostyles and ceratostyles without peduncle. Eyes present. Maxillary formula: MII 5 – 7 + 6 – 7, MIII 6 – 8, MIV 3 – 5 + 6 – 9. Length of MI from 0.4 mm to 2 mm, maxillary carrier length from 0.25 mm to 0.9 mm, closing system length from 0.1 to 1 mm, MII length from 0.3 mm to 0.9 mm, opening cavity length from 0.1 mm to 1 mm. Pectinate branchiae starting from chaetigers 6 – 15 to chaetigers 9 – 33. The maximum number of branchial filaments from 4 to 26. Dorsal cirri conical in anterior chaetigers, filiform in following ones, in median-posterior region 2.7 times longer than pre-branchial chaetigers. Prechaetal lobe as a transverse fold in all chaetigers. Chaetal lobe rectangular in anterior region, triangular in media-posterior parapodia. Postchaetal lobe conical and well-developed in first 7 – 74 chaetigers; thinner and elongated in branchial chaetigers; inconspicuous in median-posterior chaetigers. Ventral cirri conical in the first chaetigers and posterior chaetigers; with a small swollen base from chaetigers 1 – 6 to chaetigers 9 – 71. Aciculae blunt, reddish at the base and distally amber in all parapodia. Limbate chaetae of two sizes in same chaetiger. Two types of pectinate chaetae: (1) in anterior chaetigers, 1 – 2 pectinate isodont narrow chaetae with 5 – 6 long and slender teeth, with oblique distal edge; (2) in median-posterior chaetigers, 2 – 4 pectinate isodont narrow chaetae with 10 – 11 short and slender teeth, with oblique distal edge. Compound spinigers present in first 7 – 26 chaetigers (specimens with L 10 ≤ 2 mm), or present in all chaetigers in specimens with L 10> 2 mm. Compound falcigers in each parapodium present in juveniles and short specimens, with blades of one length; in adults, with falcigers only in median or posterior region. Subacicular hooks with reddish basal end, starting in chaetigers 9 – 39, with up to one or two hooks per chaetiger; in specimens with L 10 ≤ 2.5 mm hooks bidentate; in specimens with L 10 = 2.6 – 3.8 mm hooks bidentate in anterior regions, but unidentate in median-posterior ones; in specimens with L 10> 3.8 mm hooks unidentate.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFED0F3C98A49FB3FDB6FB95.taxon	distribution	Distribution. Southern California, USA.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
C76287D7FFED0F3C98A49FB3FDB6FB95.taxon	discussion	Remarks. See Molina-Acevedo (2018) for redescription of P. disjuncta and additional details about the morphology and development of this species.	en	Molina-Acevedo, Isabel C., Fernández-Rodríguez, Vanessa, Idris, Izwandy (2022): Morphometric approach to supports distinction among three species of Paucibranchia Molina-Acevedo, 2018 (Annelida: Eunicidae). Zootaxa 5155 (3): 347-370, DOI: 10.11646/zootaxa.5155.3.3
