Taxonomy of the catfish genus Pseudoplatystoma Bleeker (Siluriformes: Pimelodidae) with recognition of eight species. Author Uriel Angel Buitrago-Suárez Author Brooks M. Burr text Zootaxa 2007 1512 1 38 http://www.zoobank.org/urn:lsid:zoobank.org:pub:A7987452-69A5-4C79-B0F2-29B889EA3E1B journal article z01512p001 A7987452-69A5-4C79-B0F2-29B889EA3E1B Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) (Figure 27, Table 8) Pseudoplatystoma fasciatum reticulatum Eigenmann & Eigenmann , 1889:30. Type and Locality: Negro River [Brazil]. Holotype: MCZ 23813. Geographic distribution: Central Amazon and Parana River in Argentina, Bolivia, Brazil, Paraguay, and Uruguay (Fig. 25). Holotype : MCZ 23813 , 605 mm SL, Negro River, between Manaus and Moura , 3°8'N , 59°55'W , state of Amazonas , Brazil , N. Dexter and L. Agassiz , 12 October 1865 . Material examined: ANSP 53867 , (2), Descalvados , Matto Grosso , Paraguay River . J. A. Rehn , September1931 . BMNH 1934-820113120 , (2), Paraguay River, near Asuncion , Paraguay , purchased by G. Schouten , 1934 . FMNH 96053 , (1), Delcalvados , Matto Grosso , Paraguay River , Brazil , Schmidt et al. , 1926 . FMNH 58039 , (1), Puerto Suarez , Bolivia , J. D. Haseman , 6 May 1909 . FMNH 72656 , (1), Aregua, Paraguay River , 7 April 1909 . USNM 181766 , (1), Paraguay River, Asuncion bay, near Asuncion , Paraguay , C. J. Brown , 27 December 1956 . USNM 002114 , (1), Paraguay River . FIGURE 27. Pseudoplatystoma reticulatum (Eigenmann & Eigenmann, 1889) , NRM 14068, 460.1 mm SL. Scale 10 cm. Diagnosis : A species of Pseudoplatystoma distinguished by a combination of the following features: loop-like dark bars forming a reticulating pattern, never straight as in P. fasciatum , P. orinocoense and P. punctifer ; dark, loop -like bars join those in the dorsal region of the body forming distinct cells; longer loop - like dark bars, extending far below the lateral line; head shows either spots or loops; 42-43 vertebrae; anal fin always with spots; no clear demarcation between dark dorsal and pale ventral regions; lower jaw pointed. Description: Maximum recorded length 605 mm TL. Viewed dorsally, head somewhat pointed on the anterior margin; dorsal lip expanding toward the midline. Generally, individuals are stout. Dark pigmentation on dorsal and lateral region of body extends below lateral line. No clear delimitation between pale and dark pigmentation of body. Dark loop -like bars all over the dark area from posterior opercular flap to caudal peduncle. Head with spots and bars from tip to nape. Dorsal fin spine and rays with spots. Anal fin spotted on each individual examined. Pectoral and pelvic fins dark dorsally, pale ventrally, with few spots; some individuals with dusky posterior margins on pectoral fins. Adipose fin with few spots (10-13 spots). Area around dorsal procurrent caudal rays with spots, ventral procurrent caudal rays without spots. See Table 9 for a comparison with other species. Color and pattern of adults are shown in Fig. 18. Etymology: The specific epithet reticulatum refers to the reticulating pigmentation pattern. TABLE 8. Descriptive measurements of the body size and shape (in mm), and number of vertebrae for P. reticulatum . Number of individuals measured, 10.

Variables	Holotype	mean+SD	range
Standard length	605	363.7+140.0	193.6-579
Snout-posterior occipital process	250	143.2+49.6	80.6-211.3
Snout-posterior margin of the opercle	238	139.0+47.4	78.7-204.4
Dorsal fin spine length	58	40.3+13.6	22.9-59.9
Pectoral fin spine length	94	54.7+18.3	32.4-83.1
Maxillary barbel length	219	169.3+40.6	120-219.4
Anterior chin barbel length	195	143.7+25.7	109.6-177.2
Insertion maxillary barbel-eye	104	55.7+18.1	32.7-80.3
Insertion maxillary barbel-joint pectoral spine	183	106.9+18.1	59.9-160.8
Insertion maxillary barbel-joint dorsal spine	260	150+52.4	82.7-219.6
Eye-joint pectoral spine	91	58.3+21.4	31.5-89.2
Eye-joint dorsal spine	164	95.3+34.2	51.4-127.4
Joint pectoral spine-joint dorsal spine	114	63.6+23.3	33.2-93.8
Joint pectoral spine-joint first pelvic ray	164	82.0+33.0	34-135.1
Joint pectoral spine-joint last ray of dorsal fin	153	77.3+26.1	41.7-108.7
Joint dorsal spine-joint first pelvic ray	119	65.2+26.5	31.6-101.4
Dorsal fin base length	54	27.7+10.4	13.8-42
Joint first pelvic ray-joint last dorsal fin ray	88	48.5+20.1	22.4-73.2
Joint first pelvic ray-anal fin origin	153	85.3+34.5	44-140.3
Joint first pelvic ray-origin adipose fin	170	90.2+34.9	46.7-138.6
Last dorsal fin ray-anal fin origin	194	102.4+41.0	51.9-163.5
Last dorsal fin ray-adipose fin origin	178	87.2+35.7	44.5-140.8
Anal fin origin-adipose fin origin	68	45.5+17.4	20.8-63.1

...continued TABLE 8. (continued)

Variables	Neotype	mean+SD	range
Anal fin base length	61	36.1+12.9	20.2-55.7
Anal fin origin-adipose fin terminus	71	41.5+15.2	22.7-64.2
Adipose fin origin-anal fin terminus	84	48.4+17.9	27.8-74.2
Adipose fin length	52	28.4±9.5	11.6-44
Anal fin terminus-adipose fin terminus	44	25.6±9.8	12.9-37.9
Anal fin terminus-ventral caudal fin origin	27	17.3±6.3	8.4-28.1
Anal fin terminus-dorsal caudal fin origin	43	26.9±9.9	13.1-39.5
Adipose fin terminus-ventral caudal fin origin	61	34.8±13.1	17.6-54.2
Adipose fin terminus-dorsal caudal fin origin	43	23.7+8.8	11.9-34.8
Caudal peduncle depth	37	22.9+9.5	10.8-37
Number of vertebrae	42	42.25+0.43	42-43