A taxonomic revision of the Neotropical electric fish genus Brachyhypopomus (Ostariophysi: Gymnotiformes: Hypopomidae), with descriptions of 15 new species Author Crampton, William G. R. Department of Biology, University of Central Florida, PO Box 162368, Florida, 32816 - 2368, USA. crampton@ucf.edu Author Santana, Carlos D. de Division of Fishes, Smithsonian Institution, National Museum of Natural History, 10 th and Constitution Avenue, NW, Washington, DC 20560 - 0159, USA. apteronotidae@ig.com.br Author Waddell, Joseph C. Department of Biology, University of Central Florida, PO Box 162368, Florida, 32816 - 2368, USA. joecwaddell@knights.ucf.edu Author Lovejoy, Nathan R. Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M 1 C 1 A 5, Canada lovejoy@utsc.utoronto.ca text Neotropical Ichthyology 2016 e 150146 2016-12-31 14 4 639 790 http://dx.doi.org/10.1590/1982-0224-20150146 journal article 10.1590/1982-0224-20150146 1982-0224 13331233

Table 17. Morphometrics for Brachyhypopomus palenque, Brachyhypopomus provenzanoi, and Brachyhypopomus regani. HT, holotype; SD, standard deviation. Ranges for Brachyhypopomus palenque and Brachyhypopomus regani refer to the holotype and to paratype and non-type specimens from the type region. Ranges for Brachyhypopomus provenzanoi refer to the holotype and to paratype specimens from the type region.

	B. palenque					B. provenzanoi					B. regani
	HT	Range	Mean	SD	n	HT	Range	Mean	SD	n	HT	Range	Mean	SD	n
Total length (TL) (mm)	149	83-204	118	35.1	33	87	68-109	87	7.5	41	128	72-138	112	18.4	26
Length to end of anal fin (LEA) (mm)	135	77-184	109	31.7	33	71	59-92	73	6.3	41	115	63-127	98	16.3	30
Head length (HL) (mm)	14.6	9.6-19.2	12.0	3.1	16	7.7	7.0-8.8	7.8	0.4	16	13.4	9.2-16.8	13.7	1.9	32
Proportion of TL (%)
Caudal filament length (CF)	9.4	4.2-12.4	9.1	1.9	33	18.4	9.4-20.0	15.8	2.3	41	10.2	10.1-15.2	12.6	1.8	20
Proportion of LEA (%)
Head length (HL)	10.8	10.2-12.0	11.3	0.5	16	10.8	9.6-11.9	10.7	0.6	16	11.7	11.7-17.4	14.0	1.0	30
Snout to occiput (SO)	8.8	8.0-11.1	9.8	0.7	16	8.3	7.8-9.4	8.6	0.4	16	9.3	9.3-14.2	11.1	0.9	30
Snout to anal-fin origin (SA)	19.6	19.4-22.8	20.7	1.0	16	18.4	18.2-21.0	19.6	0.8	16	19.7	19.6-29.2	23.4	2.0	30
Snout to pectoral-fin base (PP)	11.1	10.9-13.2	12.4	0.6	16	11.7	10.2-12.6	11.6	0.5	16	13.6	13.6-20.0	15.9	1.2	30
Longest pectoral-fin ray (PRL)	3.6	3.2-5.2	4.1	0.5	16	4.7	4.2-5.4	4.8	0.4	16	5.0	5.0-8.5	6.5	0.6	30
Anal fin length (AF)	79.3	76.7-83.0	79.7	1.3	16	81.7	71.8-82.6	80.0	2.7	16	80.0	75.6-83.3	79.9	1.5	30
Longest anal-fin ray (ARL)	3.3	3.0-4.3	3.7	0.3	16	3.9	2.4-4.1	3.5	0.5	16	4.3	1.5-4.4	3.1	0.7	30
Body depth at anal-fin origin (BD1)	11.9	9.4-11.9	10.5	0.7	16	8.5	6.7-9.6	7.9	0.8	16	11.8	10.6-16.5	13.2	1.1	30
Body width at anal-fin origin (BW1)	7.9	6.0-7.9	6.6	0.4	16	4.4	3.8-4.9	4.2	0.3	16	6.5	4.4-7.4	6.5	0.6	30
Body depth at anal-fin middle (BD2)	10.5	8.6-11.7	10.2	0.7	16	7.6	5.9-8.2	7.1	0.7	16	11.5	9.0-12.3	10.6	0.8	30
Body width at anal-fin middle (BW2)	4.0	2.7-4.2	3.4	0.4	16	2.6	1.9-3.6	2.6	0.5	16	3.3	2.2-4.4	2.9	0.4	30
Caudal filament length (CF)	9.6	7.4-14.0	9.9	1.8	12	22.5	17.4-24.4	19.8	2.3	15	11.3	11.1-17.9	14.4	2.4	20
Proportion of HL (%)
Preorbital distance (PR)	25.3	25.0-30.6	27.1	1.6	16	24.7	23.1-26.7	24.5	1.1	16	26.0	23.4-29.9	27.1	1.5	32
Mouth width (MW)	28.1	25.1-37.8	30.9	3.9	16	29.9	21.4-29.9	25.6	2.2	16	23.0	14.9-27.0	19.2	2.4	32
Internarial distance (AE)	22.6	18.7-23.1	21.4	1.3	16	19.8	17.8-21.9	20.1	1.3	16	19.1	16.5-21.2	18.6	1.1	32
Posterior naris to eye (PE)	5.8	4.5-10.1	7.0	1.4	16	6.6	3.9-6.6	5.4	0.8	16	7.6	4.8-8.3	6.8	0.8	32
Orbital diameter (OD)	9.3	7.8-11.7	9.8	1.1	16	12.5	10.2-14.3	12.2	1.0	16	10.3	9.5-13.0	11.1	0.9	32
Interorbital distance (IO)	30.1	25.0-30.4	28.0	2.0	16	21.2	17.8-22.4	20.1	1.5	16	19.7	15.0-21.1	18.0	1.7	32
Head depth at eye (HD1)	48.2	44.5-50.5	46.9	1.9	16	43.8	38.3-44.6	41.2	1.8	16	42.3	40.0-47.4	43.3	1.7	32
Head width at eye (HW1)	38.9	37.5-49.9	43.1	3.5	16	39.6	28.8-39.6	34.2	2.9	16	36.8	30.4-41.8	34.9	3.0	32
Head depth at occiput (HD2)	80.4	65.6-80.4	73.0	3.5	16	62.5	58.0-67.8	64.8	2.3	16	71.6	61.3-73.7	67.6	2.5	32
Head width at occiput (HW2)	55.7	52.5-63.3	56.7	2.5	16	48.8	38.9-48.8	44.6	2.8	16	57.5	39.1-58.2	50.5	4.2	32
Postorbital distance (PO)	63.7	61.9-68.5	64.7	2.0	16	61.8	60.1-67.5	63.3	2.0	16	64.9	60.4-67.4	65.0	1.4	32
Branchial aperture (BO)	33.9	24.4-33.9	29.4	3.2	16	18.7	14.1-21.0	17.3	1.9	16	24.6	19.0-26.6	23.4	2.0	32
Pectoral-fin base (PB)	17.9	12.8-17.9	14.8	1.4	16	8.3	6.8-10.9	8.9	1.2	16	11.2	9.3-13.4	11.7	1.0	32
Caudal filament depth (CD)	20.3	15.1-21.3	18.1	1.8	12	14.9	13.0-19.1	14.3	1.5	16	15.5	8.1-15.5	11.9	1.6	30
Caudal filament width (CW)	6.0	3.8-7.5	5.8	1.2	12	7.3	4.6-7.3	5.6	0.8	16	3.8	3.0-6.1	4.1	0.7	30
Other proportions
BW1 (% of BD1)	66.3	56.8-67.5	63.1	3.1	16	52.2	48.4-57.1	53.3	3.0	16	54.7	41.3-54.7	49.1	3.9	32
BW2 (% of BD2)	37.7	29.9-37.7	33.3	2.3	16	34.1	28.4-44.4	35.6	4.3	16	29.0	22.2-38.1	27.8	3.5	32