Hemibagrus bongan ( Popta, 1904 )

Ng, Heok Hee & Kottelat, Maurice, 2013, Revision Of The Asian Catfish Genus Hemibagrus Bleeker, 1862 (Teleostei: Siluriformes: Bagridae), Raffles Bulletin of Zoology 61 (1), pp. 205-291 : 252-254

publication ID

https://doi.org/ 10.5281/zenodo.5351788

persistent identifier

https://treatment.plazi.org/id/CF180962-FFC6-FF86-FF01-F08CFBEA8754

treatment provided by

Tatiana

scientific name

Hemibagrus bongan ( Popta, 1904 )
status

 

Hemibagrus bongan ( Popta, 1904) View in CoL

( Fig. 33 View Fig )

Macrones bongan Popta, 1904: 182 (type locality: Borneo: Bongan [=Bungan] River); 1906: 35, Pl. 2 Fig. 5 View Fig . Bagrus planiceps View in CoL (non Valenciennes, in Cuvier & Valenciennes,

1840) - Bleeker, 1860c: 18. Hemibagrus planiceps View in CoL (in part) - Bleeker, 1862: 56, Pl. 71. Macrones planiceps (non Valenciennes, in Cuvier & Valenciennes,

1840) - Vaillant, 1902: 18. Macrones nemurus (in part) - Weber & de Beaufort, 1913: 341. Mystus planiceps (non Valenciennes, in Cuvier & Valenciennes,

1840) – Inger & Chin, 1962: 141, Fig. 71. Mystus nemurus (in part) - Watson & Balon, 1984: 933. Mystus nemurus (in part) - Roberts, 1989: 121. Mystus cf. planiceps - Roberts, 1989: 123. Hemibagrus cf. planiceps - Kottelat & Lim, 1995b: 238. Hemibagrus bongan - Parenti & Lim, 2005: 189; Ferraris, 2007:

87.

Material examined. — BORNEO: Sarawak: ANSP 176572 About ANSP , 1 ex., 194.1 mm SL, Sungai Lawa, gravel area about 1.0km up from confluence with Batang Baram (3°30'N 114°27'E) GoogleMaps ; CAS 55105, 5 ex., 104.5–187.1 mm SL , FMNH 68092 About FMNH , 13 ex., 74.0–211.0 mm SL, Third division, Baleh River , Sungai Putai camp, Sungai Dapu ; FMNH 68063 About FMNH , 7 ex., 41.7–216.0 mm SL, Third division, headwaters of Baleh River , 1000–1700 ft ; FMNH 68064 About FMNH , 1 ex., 201.5 mm SL, Third division, headwaters of Baleh River, Sungai Bunoh ; FMNH 68084 About FMNH , 4 ex., 47.5–104.9 mm SL, Third division, tributary of Baleh River between Sungai Entunau and Sungai Putai ; FMNH 68093 About FMNH , 4 ex., 72.1–161.4 mm SL, Third division, Baleh River Sungai Putai camp (1°48'N 113°45'E) GoogleMaps ; FMNH 68411 About FMNH , 1 ex., 77.7 mm SL, Third division, headwaters of Baleh River ; FMNH 68925 About FMNH , 18 ex., 44.1–109.3 mm SL, Third division, Kapit district , Mengiong River , Nanga Tekalit camp, tributary of Sungai Tekalit ; FMNH 68931 About FMNH , 48 ex., 36.7–174.6 mm SL, Third division, Kapit district , Mengiong River , Nanga Tekalit camp, Sungai Satu ; FMNH 96273 About FMNH , 1 ex., 46.0 mm SL, Sarawak ; NRM 41295, 1 ex., 217.7 mm SL, Fourth division, Baram River drainage, Sungai Kaha about 200 m from mouth ; USNM 324567 About USNM , 1 ex., 158.7 mm SL, Batang Balui tributary stream, Jangan Aya flowing into Batang Besua ; ZRC 40496, 1 ex., 152.8 mm SL, Kapit River .

BORNEO: Kalimantan Barat: RMNH 7548 About RMNH , 2 ex., syntypes, 60.4–128.2 mm SL, Bongan [Bungan] ; MZB 9429 View Materials , 1 ex., 120,72 mm SL, Kapuas River drainage, Sungai Embaloh drainage, Sungai Dajo ; MZB 6545 View Materials , 1 ex., 123.8 mm SL, Kapuas River drainage, Sungai Embaloh, near the mouth of Sungai Tekelan ; MZB 9166 View Materials , 2 ex., 97.6–111.5 mm SL, Kapuas River drainage, Sungai Embaloh ; MZB 9428 View Materials , 1 ex., 45.1 mm SL, Kapuas River drainage, Sungai Embaloh drainage, Sungai Pajau ; MZB 9425 View Materials , 1 ex., 77.0 mm SL, Kapuas River drainage, Sungai Embaloh drainage, Sungai Sebaya ; MZB 9427 View Materials , 1 ex., 78.3 mm SL, Kapuas River drainage, Sungai Embaloh drainage, Sungai Senentang ; MZB 9437 View Materials , 2 ex., 63.4–134.1 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Jepala ; MZB 9438 View Materials , 7 ex., 56.6–153.5 mm SL , ZRC 43014, 2 ex., 152.4–174.9 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Haloi ; MZB 9436 View Materials , 2 ex., 94.8–99.3 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Menjulung ; MZB 9439 View Materials , 5 ex., 51.8–116.8 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Mentibat ; ZRC 43015, 1 ex., 205.0 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Nyampi ; MZB 9434 View Materials , 3 ex., 99.4–162.0 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Otang ; MZB 9440 View Materials , 3 ex., 60.6–165.7 mm SL , ZRC 43013, 1 ex., 100.1 mm SL, Kapuas River drainage, Sungai Mendalam drainage, Sungai Sebangan Ke ; MZB 7844 View Materials , 1 ex., 91.7 mm SL, Kapuas River drainage, Sungai Putan ; MZB 7715 View Materials , 1 ex., 85.6 mm SL, Kapuas River drainage, Sungai Sibau drainage, Sungai Sekedam Besar ; MZB 7958 View Materials , 3 ex., 42.7–76.9 mm SL, Kapuas River drainage, Sungai Sibau ; RMNH 7828 About RMNH , 1 ex., 144.3 mm SL, Kapuas River drainage, Raoen .

BORNEO: Kalimantan Tengah: BMNH 2001.1 .15.180, 1 ex., 140.0 mm SL, Sungai Busang .

Diagnosis. — Hemibagrus bongan differs from H. divaricatus in having a longer adipose-fin base (15.1–21.1% SL vs. 11.1–15.5), a deeper adipose fin (maximum height 2.9–5.0 times in length of base vs. 1.9–3.2) and a larger eye (16–20% HL vs. 11–17), from H. gracilis in having a longer snout (33–41% HL vs. 30–35), and slightly fewer vertebrae (48–50, mode=49 vs. 50–52, mode=52), and from H. lacustrinus in having a more slender body (depth at anus 9.5–12.9 vs. 12.2–13.6), and a longer dorsal to adipose distance (11.0–16.6% SL vs. 7.6–10.9; adpressed dorsal fin not reaching vs. reaching origin of the adipose fin). It is distinguished from H. planiceps in having more vertebrae (48–50 mode=49 vs. 47–49, mode=47), a more slender body (depth at anus 9.5–12.9% SL vs. 11.3–14.7), a smaller interorbital distance (28–34% HL vs. 32–37) and longer maxillary barbels (199–283% HL vs. 148–220), and from H. velox in having fewer vertebrae (48–50, mode=49 vs. 50–52, mode=52), a relatively shorter genital papilla in the males (not reaching anal-fin origin, vs. reaching, Fig. 48 View Fig ) and the upper lobe of the caudal fin rounded posteriorly with principal ray not produced into a filament (vs. upper lobe regularly tapering with principal ray produced into a filament).

Description. — Biometric and meristic data as in Table 19. General description as for genus. Head depressed and broad, body moderately compressed. Snout length 33–41% HL. Interorbital distance 28–34% HL. Eye diameter 16–20% HL. Dorsal profile rising evenly but not steeply from tip of snout to origin of dorsal fin, then sloping gently ventrally from there to end of caudal peduncle. Ventral profile horizontal to origin of anal fin, then sloping dorsally to end of caudal peduncle. Body depth at anus 9.5–12.9% SL. Adipose-fin base short, approximately as long as anal-fin base (15.1–21.1% SL); maximum height 2.9–5.0 times in length of base; separated from base of last dorsal-fin ray by distance of 11.0–16.6% SL. Dorsal spine stout, with 5–7 serrations on posterior edge; length 10.3–13.7% SL. Pectoral spine stout, with 13–22 large serrations on posterior edge; length 12.1–19.3% SL. Adpressed dorsal fin not reaching adipose-fin origin. Analfin origin slightly posterior to adipose-fin origin. Caudalpeduncle depth 5.7–8.8% SL. Caudal fin forked; upper lobe tapering with principal ray not produced into a filament, lower lobe rounded posteriorly. Maxillary-barbel length 199–283% HL. Inner mandibular-barbel length 34–88% HL. Vertebrae 48–50. Branchiostegal rays 10–12. Maximum recorded size 218 mm SL.

Males with elongate genital papilla not reaching origin of anal fin. Anus separated from genital appendages of both sexes by 5.5–7.5% SL.

Colour. — Dorsal surface of head and body uniform light grey to grey (live or freshly-dead specimens with yellowish hue, fading in preserved specimens); lateral line cream to yellow; ventral surface of head and body dirty white; adipose fin and fin rays of all fins grey; inter-radial membranes of all fins dirty yellow.

Distribution. — Known from the Kapuas, Rejang, Baram and Barito River drainages in western and southern Borneo ( Fig. 32 View Fig ).

Remarks. — The caption accompanying the photograph of one of the syntypes in Popta (1906: Pl. II, Fig. 5 View Fig ) lists the specimen as being 20 mm (TL). This is a typographical error, as the smaller syntype that the photograph illustrates is 60 mm SL (approx. 80 mm TL).

CAS

California Academy of Sciences

NRM

Swedish Museum of Natural History - Zoological Collections

ZRC

Zoological Reference Collection, National University of Singapore

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Siluriformes

Family

Bagridae

Genus

Hemibagrus

Loc

Hemibagrus bongan ( Popta, 1904 )

Ng, Heok Hee & Kottelat, Maurice 2013
2013
Loc

Macrones bongan

Popta, C 1904: 182
1904
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