Taxonomic revision of the Ophidion holbrookii Putnam, 1874 (Ophidiiformes: Ophidiidae) species complex, with description of a new species from Brazil Author Rotundo, Matheus Marcos 0000-0003-1886-5320 Acervo Zoológico da Universidade Santa Cecília, 11045 - 907 Santos, SP, Brazil. & Instituto Nacional de Ciências e Tecnologia da Biodiversidade e uso Sustentável de Peixes, 13565 - 905, São Carlos, SP, Brazil. mmrotundo@unisanta.br Author Caires, Rodrigo Antunes 0000-0002-9918-3972 Museu de Zoologia da Universidade de São Paulo, 04263 - 000 São Paulo, SP, Brazil. & Instituto Oceanográfico da Universidade de São Paulo, Laboratório de Diversidade, Ecologia e Evolução de Peixes (DEEP Lab). 05508 - 120, São Paulo, SP, Brazil rodricaires@yahoo.com.br Author Oliveira, Claudio 0000-0002-4143-7212 Laboratório de Biologia e Genética de Peixes, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil. claudio.oliveira@unesp.br Author Kuranaka, Mariana 0000-0002-6439-979X Laboratório de Biologia e Genética de Peixes, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, SP, Brazil. mariana.kuranaka@unesp.br Author Figueiredo-Filho, Jessé Miranda De 0000-0002-7468-2433 University of Louisiana at Lafayette, Department of Biology, 70504 Lafayette, LA, USA. jessefilho3@gmail.com Author Marceniuk, Alexandre Pires 0000-0003-4286-0482 Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal da Paraíba, Cidade Universitária, 58051 - 900, Joao Pessoa, PB, Brazil. & Programa de Po ́ s-Graduac ̧ a ̃ o em Ecologia e Conservac ̧ a ̃ o da Universidade Estadual da Parai ́ ba. Campina Grande - PB, 58429 - 500 (APM) a _ marceniuk @ hotmail. com; https: // orcid. org / 0000 - 0003 - 4286 - 0482 a_marceniuk@hotmail.com text Zootaxa 2023 2023-07-19 5318 2 237 252 http://dx.doi.org/10.11646/zootaxa.5318.2.4 journal article 10.11646/zootaxa.5318.2.4 c64f387e-dc8d-4b33-886b-ba7e3c13ab00 1175-5326 8169565 3F09F585-B93C-4674-B2EB-FA3995DF13B3

TABLE 3. Morphometric and meristic data of Ophidion holbrookii and O. zavalai n. sp. Total length and standard length (SL) is expressed in millimeters, and all other measurements are expressed as percent of standard length. N = number of specimens examined; outside parentheses, type specimens; inside parentheses, non-type specimens. Specimens smaller (<) and larger (>) then 230 mm SL.

		Ophidion holbrookii		Ophidion zavalai
	N Mean Holotype (Range) <230 mm		> 230 mm	N Mean Holotype (Range) <230 mm	> 230 mm
Total length	27	142 (141–280) 140–131	229–279	63 275 (151–329) 151–221	220–329
Standard length 27		138 (131–269) 131–214	218–269	63 271 (148–325) 148–216	217–325
Head length	27 22.0	18.3 (19.3–24.2) (21.9) 19.3–23.6	(22.4) 20.4–24.2	63 19.0 20.1 (16.5–22.1) (18.3) 16.5–21.6 (20.4) 17.8–22.1
Predorsal length	27 28.5	27.8 (25.3–32.0) (28.2) 25.3–32.0	(29.2) 26.0–31.4	63 27.7 28.0 (24.0–30.0) (27.6) 24.0–29.2 (27.9) 25.0–30.0
Preanal length	27 42.3	40.0 (38.4–46.0) (42.1) 38.4–45.0	(42.7) 39.7–46.0	63 39.8 40.6 (36.5–44.4) (39.0) 36.5–44.0 (41.2) 38.1–44.4
Preorbital length	26 4.9	(4.8–5.8) (4.6) 3.5–5.8	(5.3) 5.0–5.7	63 3.8 4.0 (3.3–4.3) (3.9) 3.2–5.7	(4.0) 3.3–6.6
Lateral line length	27 96.6	(82.2–99.4) (94.0) 89.1–99.3	(92.4) 82.2–97.6	63 92.1 94.5 (88.5–94.5) (98.4) 88.5–99.5 (98.3) 91.1–99.6
Maxillary length	27 9.2	8.0 (6.9–12.2) (9.1) 6.9–10.3	(9.5) 8.3–12.2	63 8.4 9.0 (6.6–11.5) (8.1) 6.6–10.2	(9.0) 7.3–11.5
Body height at center of the eye	27 11.0	9.3 (8.6–14.7) (11.0) 9.3–13.4	(10.8) 8.6–14.7	63 9.5 9.8 (7.9–11.4) (9.1) 7.9–10.7	(10.2) 8.4–11.4
Body height at dorsal origin	27 15.8	12.0 (13.7–18.4) (15.6) 13.7–18.4	(16.4) 15.4–17.3	63 13.5 15.4 (10.2–17.9) (12.6) 10.2–16.3 (15.0) 13.6–18.0
Body height at anal origin	27 16.3	14.0 (9.6–20.5) (16.6) 14.5–20.0	(15.7) 9.6–17.5	63 14.1 15.6 (11.5–18.0) (13.3) 11.5–15.3 (15.6) 13.5–18.0
Pectoral-fin length	27 9.5	10.1 (8.2–13.1) (9.6) 8.2–13.1	(9.5) 8.2–12.6	63 7.8 8.0 (6.0–10.2) (7.7) 6.0–10.2	(7.8) 7.1–8.7
Outer pelvic ray length	27 11.7	(8.8–16.3) (11.7) 8.8–16.3	(11.7) 9.1–13.4	62 9.5 12.6 (5.7–14.4) (8.1) 5.7–14.4	(11.7) 7.3–13.5
Internal pelvic ray length	27 8.0	(5.6–10.6) (7.7) 5.6–10.6	(8.6)7.3–9.7	62 5.8 8.1 (2.8–9.0) (4.7) 2.8–8.4	(7.7) 4.2–9.0
Caudal-fin length	26 4.7	2.9 (3.0–7.7) (4.9) 3.0–7.7	(4.1) 3.1–4.1	63 1.8 1.5 (0.7–2.8) (2.0) 0.9–2.8	(1.6) 0.7–2.4
Orbital diameter	27 5.3	5.9 (4.0–6.5) (5.4) 4.6–6.5	(4.9) 4.0–5.8	63 4.6 4.8 (3.7–5.4) (4.5) 3.7–5.3	(4.7) 3.8–5.5
Bony interorbit 27 3.4		(2.5–5.2) (3.4) 2.5–5.2	(3.5) 3.0–4.2	63 3.0 3.4 (2.1–5.0) (2.6) 2.1–3.2	(3.6) 2.6–5.0
Posorbital length	27 13.2	(11.7–15.3) (13.2) 11.7–15.3	(13.4) 12.9–14.3	63 10.5 12.8 (8.4–13.5) (9.7) 8.4–11.2 (12.1) 10.2–13.5
Distance snout to eye center	27 7.0	6.1 (5.9–9.1) (7.0) 5.9–8.0	(7.1) 6.4–9.1	63 6.5 6.4 (3.7–7.8) (6.4) 3.7–7.3	6.6 (5.7–7.8
Total gill rakers 27 4		(6–7) (6) 6–7	(6) 6–7	63 6 6 (6–9) (7) 6–9	(6) 6–9
Gill rakers on lower limb	27 4	(4–4) (4) 4–4	(4) 4–4	65 5 5 (4–6) (5) 4–6)	(5) 4–6)
Vertebrae	19 64	67 (59–66) (64) 62–65	(63) 59–66	45 65 66 (63–68) (65) 63–68	(65) 63–67
Precaudal vertebrae	19 15	15 (13–16) (15) 15–15	(14) 13–15	45 15 15 (14–16) (15) 14–16	(15) 14–15
Caudal vertebrae	19 49	52 (45–52) (49) 47–50	(48) 45–52	45 50 51 (48–53) (50) 48–53	(51) 48–52
Pectoral-fin rays	27 21	(19–25) (21) 19–25	(21) 20–24	72 18 18 (17–21) (18) 17–20	(18) 17–20
Dorsal-fin rays	5 126	˜126 (116–137)		42 119 128 (107–135) (116) 107–127	(127) 119–139
Anal-fin rays	5 101	˜95 (96–107)		42 98 104 (88–107) (95) 88–104	(103) 96–107