Hemibagrus planiceps

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 : 250-252

Hemibagrus planiceps (Valenciennes, in Cuvier & Valenciennes, 1840)

( Fig. 31 )

Bagrus planiceps Valenciennes , in Cuvier & Valenciennes, 1840: 421 (type locality: Java); Bleeker, 1846a: 26; 1846b: 285; 1857b: 477; 1858a: 417; 1858e: 154 (in part); 1859g: 134 (in part); Ng et al., 1999: 38 (lectotype designation).

Bagrus anisurus Valenciennes , in Cuvier & Valenciennes, 1840: 422 (type locality: Java); Kottelat, 1999: 272 (lectotype designation).

Bagrus flavus Bleeker, 1846a: 28 (type locality: Batavia [= Jakarta], Java); 1846b: 285.

Hemibagrus planiceps - Bleeker, 1862: 56, Pl. 71 (in part); Ferraris,

2007: 90. Macrones planiceps - Steindachner, 1868: 1004; Koumans, 1940:

182. Hemibagrus planiceps - Jordan & Seale, 1907: 536. Mystus (Mystus) planiceps - Jayaram, 1966: 446. Mystus planiceps - Roberts, 1989: 123; 1993: 30, Figs. 65–66.

Material examined. — JAVA: BMNH 1870.6.7:11–13, 3 ex., 163.0–176.0 mm SL , Java; CAS 120505 , 4 ex., 94.9–195.8 mm SL; MCZ 30421, 2 ex., 156.5–177.8 mm SL, USNM 72542 , 1 ex., 206.2 mm SL, USNM 72543 , 1 ex., 180.8 mm SL, ZMA 121.593 , 3 ex., 67.5–124.7 mm SL , Jawa Barat: Bogor ; MNHN B615 , 1 ex., 97.9 mm SL, RMNH 2956 , 1 ex., 283.0 mm SL (lectotype of Bagrus anisurus ), RMNH 2939 , 1 ex. 179.0 mm SL, USNM 62347 , 2 ex., 85.9, 185.5 mm SL , Java. MZB 1117 , 7 ex., 41.9–146.1 mm SL , Java: Jawa Barat, Bogor, Lolongok, Cisadane River ; MZB 1119 , 6 ex., 56.8–73.0 mm SL , Java: Jawa Barat, Bogor, Cisindang Barang River, Parakan Salak ; MZB 1122 , 3 ex., 31.3–98.6 mm SL , Jawa Barat: Empang Bogor, Cipakancilan River; MZB 1125 , 1 ex., 140.5 mm SL, Bogor, Paku, Cikaniki River ; MZB 1129 , 3 ex., 88.0–93.0 mm SL , Jawa Barat: Bogor, Leuwiliang, Cianten River ; MZB 1130 , 6 ex., 44.1–69.0 mm SL , Jawa Barat: Bogor, Jayanti, Cikeas River ; MZB 1132 , 1 ex., 118.0 mm SL , Java: Jawa Barat, Bogor, Jasinga, Cidurian River ; MZB 1472 , 2 ex., 195.5–202.6 mm SL , Java: Jawa Barat, Bogor, Cibinong, Cikaret lake ; MZB 1473 , 1 ex., 192.1 mm SL, Bogor, Parung, Lebak Wangi lake ; MZB 5555 , 1 ex., 82.2 mm SL , Java: Jawa Barat, Bogor, Cipakancilan ; MZB 9313 , 4 ex., 198.0–216.0 mm SL, ZRC 42563, 9 ex., 171.0–263.0 mm SL, ZRC 43859, 1 ex., 113.0 mm SL , Jawa Barat: Garut, Cimanuk, Kampung Patro (7°10'52.7"S 107°56'13.1"E); RMNH 16745 , 1 ex., 131.8 mm SL , Jawa Barat: Cisokan near Bukaduku ; UMMZ 155719 , 2 ex., 72.2, 152.9 mm SL , Jawa Barat: vicinity of Bogor ; UMMZ 155720 , 2 ex., 140.2, 167.7 mm SL , Jawa Barat: Ciliwung, Bogor Botanical Garden ; ZMA 121.810 , 1 ex., 107.3 mm SL , Jawa Barat: Garut ; ZRC 44073, 2 ex., 43.5–102.9 mm SL , Jawa Barat, Kabupaten Sukabumi , Kecamatan Kadudampit, Sungai Cibogo .

Diagnosis. — Hemibagrus planiceps is distinguished from all other species of the H. planiceps species group in having relatively fewer vertebrae (47–49, mode=47 vs. 48–50, mode=49 for H. bongan ; 51 for H. divaricatus ; 50–52, mode=52 for both H. gracilis and H. velox ; 49–50, mode=49 for H. lacustrinus ) and a greater interorbital distance (32–37% HL vs. 28–34). It further differs from all other congeners in the group (except H. lacustrinus and H. velox ) in having shorter maxillary barbels (148–220% HL vs. 199–283). Hemibagrus planiceps further differs from H. divaricatus in having a longer adipose-fin base (15.5–20.6% SL vs. 11.1–15.5) and shorter dorsal spine (8.2–12.4% SL vs. 12.3–12.9). and from H. lacustrinus in having a shorter pectoral spine (10.0–16.5% SL vs. 15.0–16.7), and a longer dorsal to adipose distance (12.0–17.3% SL vs. 7.6–10.9; adpressed dorsal fin not reaching vs. reaching origin of the adipose fin) It can be further distinguished from both H. gracilis and H. velox in having a deeper caudal peduncle (7.1–8.6% SL vs. 6.2–7.6), from H. gracilis in having a longer snout (33–40% HL vs. 30–35) and from H. velox in having a relatively shorter genital papilla in the males (not reaching anal-fin origin, vs. reaching), the upper lobe of the caudal fin rounded posteriorly (vs. upper lobe regularly tapering), and fewer branchiostegal rays (8–10 vs. 10–11).

sloping dorsally to end of caudal peduncle. Body depth at anus 11.3–14.7% SL. Adipose-fin base short, approximately as long as anal-fin base (15.5–20.6% SL); maximum height 2.5–5.2 times in length of base; separated from base of last dorsal-fin ray by distance of 12.0–17.3% SL. Dorsal spine stout, with 7–8 serrations on posterior edge; length 8.2–12.4% SL. Adpressed dorsal fin not reaching adiposefin origin. Pectoral spine stout, with 14–16 large serrations on posterior edge; length 10.0–16.5% SL. Anal-fin origin slightly posterior to adipose-fin origin. Caudal-peduncle depth 7.1–8.6% SL. Caudal fin forked; upper lobe rounded posteriorly, lower lobe rounded posteriorly. Maxillary-barbel length 148–220% HL. Inner mandibular-barbel length 34–64. Vertebrae 47–49. Branchiostegal rays 8–10. Maximum recorded size 263 mm SL.

Males with elongate genital papilla reaching to origin of anal fin. Anus separated from genital appendages of both sexes by 4.5–6.8% 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. — Hemibagrus planiceps is known only from the Ciantern, Cidurian, Cikeas, Ciliwung, Cimanuk, Cisokan, and Citarum River drainages in western Java ( Fig. 32 ).

Remarks. — Considering the relative scarcity of H. planiceps in collections, it is not surprising to find other Hemibagrus species (in particular members of the H. nemurus species group) misidentified as H. planiceps in museum material. Our study shows that H. planiceps is restricted to Java. Material identified as H. planiceps from other areas in Southeast Asia belongs to distinct species: H. gracilis from eastern Peninsular Malaysia ( Ng & Ng, 1995), H. velox from Sumatra (Ng & Description. — Biometric and meristic data as in Table 18. General description as for genus. Head depressed and broad, body moderately compressed. Snout length 33–40% HL. Interorbital distance 32–37% 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 Tan, 1999) and H. bongan from Borneo (Ng & Rachmatika, 1999). In the course of this study, we found that material from northwestern Peninsular Malaysia identified as H. planiceps represents an undescribed species, which is described here as H. divaricatus , new species.

The synonymy of Bagrus flavus with H. planiceps follows that of Bleeker (1858e) and Roberts (1989). There is no indication from available data that indicates otherwise (Ng et al., 1999), and we retain the synonymy of the two nominal species here.

Figures

Fig. 31. Hemibagrus planiceps, ZRC 44073, 102.9 mm SL; Java: Sungai Cibogo.

Fig.32. Map showing collection localities ofHemibagrus planiceps, H. bongan, H. divaricatus, H. gracilis, H. lacustrinus, and H. velox specimens examined in this study.