Parathelphusa pantherina ( Schenkel, 1902 )

Ng, Oliver K. S. Chia Peter K. L., 2006, The Freshwater Crabs Of Sulawesi, With Descriptions Of Two New Genera And Four New Species (Crustacea: Decapoda: Brachyura: Parathelphusidae), Raffles Bulletin of Zoology 54 (2), pp. 381-428 : 385-387

Parathelphusa pantherina ( Schenkel, 1902)

( Figs. 1 , 3 A-E, 36A, 37A)

Potamon (Parathelphusa) pantherina Schenkel, 1902: 522 , Pl. 10 Fig. 11-13 .

Potamon (Parathelphusa) pantherinus - Rathbun, 1905: 236.

Parathelphusa (Mesothelphusa) pantherina - Roux, 1915: 267, 249.

Para[thelphusa] (Mesothelphusa) pantherina - Balss, 1934: 178.

Table 1

LIST OF KNOWN SPECIES OF PARATHELPHUSA H. MILNE EDWARDS, 1853 (SQUARE PARENTHESIS REFER TO THE ORIGINAL GENUS THE SPECIES WAS DESCRIBED IN OR THE PROVENANCE)

Parathelphusa balabac Ng & Takeda, 1993 [Balabac Island, Philippines]

Parathelphusa batamensis Ng, 1992 [Batam Island, Indonesia]

Parathelphusa baweanensis Ng, 1997 [Bawean Islands, Indonesia]

Parathelphusa bogorensis Bott, 1970 [Java, Indonesia]

Parathelphusa cabayugan Freitag & Yeo, 2004 [Palawan, Philippines]

Parathelphusa celebensis (De Man, 1892) [ Thelphusa ] [Sulawesi, Indonesia]

= Potamon (Potamonautes) celebense var. immaculata Schenkel, 1902

Parathelphusa ceophallus Ng, 1993 [Sulawesi, Indonesia]

Parathelphusa convexa De Man, 1879 [Java and southern Sumatra, Indonesia]

= Telphusa convexus Herklots, 1861 (nomen nudum)

=? Ozius frontalis Targioni-Tozzetti, 1872

= Parathelphusa dentipes Heller, 1862

Parathelphusa crocea ( Schenkel, 1902) [ Potamon (Potamonautes) ] [Sulawesi, Indonesia]

Parathelphusa ferruginea Chia & Ng, 2006 [Sulawesi, Indonesia]

Parathelphusa linduensis ( Roux, 1904) [ Potamon ] [Sulawesi, Indonesia]

Parathelphusa lokaensis (De Man, 1892) [ Telphusa ] [Sulawesi, Indonesia]

Parathelphusa lombokensis Bott, 1970 [Lombok, Indonesia]

Parathelphusa maculata De Man, 1879 [Peninsular Malaysia; Singapore]

= Potamon (Parathelphusa) tridentatum var. incertum Lanchester, 1900

= Parathelphusa maculata var. lanchesteri Nobili, 1901

Parathelphusa maindroni (Rathbun, 1902) [ Potamon (Parathelphusa) ] [Sumatra, Indonesia; Peninsular Malaysia] Parathelphusa malaysiana Ng & Takeda, 1992 [Peninsular Malaysia]

Parathelphusa manguao Freitag & Yeo, 2004 [Palawan, Philippines]

Parathelphusa mindoro Ng & Takeda, 1993 [Mindoro Island, Philippines]

Parathelphusa modiglianii Nobili, 1903 [Mentawei Islands, Indonesia]

Parathelphusa nagasakti Ng, 1988 [Tioman Island, Peninsular Malaysia]

Parathelphusa nana Ng & Takeda, 1993 [Palawan, Philippines]

Parathelphusa nitida Ng, 1986 [Kalimantan, Indonesia]

Parathelphusa obtusa (Bott, 1969) [ Palawanthelphusa ] [Palawan, Philippines]

Parathelphusa ovum Ng, 1995 [Sabah, Malaysia]

Parathelphusa oxygona Nobili, 1901 [ Sarawak, Malaysia]

Parathelphusa palawanensis (Bott, 1969) [ Palawanthelphusa ] [Palawan, Philippines]

Parathelphusa pallida ( Schenkel, 1902) [ Potamon (Potamonautes) ] [Sulawesi, Indonesia]

= Potamon (Potamonautes) celebensis var. annulipes Schenkel, 1902

Parathelphusa pantherina ( Schenkel, 1902) [ Potamon (Parathelphusa) ] [Sulawesi, Indonesia]

Parathelphusa pareparensis (De Man, 1892) [ Telphusa ] [Sulawesi, Indonesia]

Parathelphusa parma Ng & Takeda, 1993 [Balabac Island, Philippines]

Parathelphusa possoensis ( Roux, 1904) [ Potamon (Potamonautes) ] [Sulawesi, Indonesia]

Parathelphusa pulcherrima (De Man, 1902) [ Potamon (Parathelphusa) ] [ Sarawak, Malaysia; Brunei] Parathelphusa quadrata Ng, 1997 [Lombok, Indonesia]

Parathelphusa rasilis Ng & Takeda, 1993 [Palawan, Philippines]

Parathelphusa reticulata Ng, 1990 [ Singapore]

Parathelphusa sabari Ng, 1986 [Kalimantan, Indonesia]

Parathelphusa saginata Ng & Takeda, 1993 [Palawan, Philippines]

Parathelphusa sarasinorum ( Schenkel, 1902) [ Potamon (Potamonautes) ] [Sulawesi, Indonesia]

Parathelphusa sarawakensis Ng, 1986 [ Sarawak, Malaysia]

Parathelphusa shelfordi Nobili, 1901 [ Sarawak, Malaysia]

Parathelphusa sorella Chia & Ng, 2006 [Sulawesi, Indonesia]

Parathelphusa tenuipes ( Schenkel, 1902) [ Potamon (Potamonautes) ] [Sulawesi, Indonesia]

Parathelphusa tera Chia and Ng, 1998 [Kalimantan, Indonesia]

Parathelphusa torta Chia & Ng, 1998 [Kalimantan, Indonesia]

Parathelphusa tridentata H. Milne Edwards, 1853 [Sumatra, Indonesia]

= Alpheus tridens Weber, 1795 (as 3 dens) (nomen nudum)

= Cancer (Thelphusa) tridens De Haan, 1835 (preoccupied name, nomen nudum)

= Telphusa triodon Herklots, 1861 (nomen nudum)

Parathelphusa undulata Chia & Ng, 1998 [Kalimantan, Indonesia]

Parathelphusa valida Ng & Goh, 1987 [Sabah, Malaysia]

Parathelphusa pantherina - Bott, 1970b: 338; 1970c: 123, Pl. 23 Fig. 75-77, Pl. 31 Fig. 94.

Material examined. – Lectotype: dried male (36.0 x 28.0 mm) ( NMB 21 b), Lake Matano , South Sulawesi, coll. Sarasin, 1901 . Paralectotypes: 4 males (largest 42.4 x 31.2 mm) ( NMB 21 a), same data as lectotype. Others : 1 male (51.5 x 39.0 mm) ( ZRC 2000.2540 ), Lake Matano, about 2 km southeast of Matano , South Sulawesi, coll. M. Kottelat, 29 Jan.1991 ; 2 females ( ZRC 2000.2541 ), Lake Matano, about 2 km southeast of Matano , South Sulawesi, coll. M. Kottelat & A. Werner, 18 Mar 1989 ; 1 female ( ZRC 2000.2542 ), Lake Matano, south coast, west of Soroako , South Sulawesi, coll. M. Kottelat, 18 Jun.1988 ; 1 male, 1 female ( ZRC 2000.2543 ), Lake Matano outlet, South Sulawesi, coll. M. Kottelat, 1995 ; 1 male, 2 females ( ZRC 2000.2544 ), Lake Matano, South Coast, west of Soroaka , South Sulawesi, coll. M. Kottelat, 18 Jun.1988 ; 1 female ( MZB 060 ), Sulawesi, coll. B. Koeramai, 7 Oct.1909 ; 1 female ( ZRC 2000.1706 ), Lake Matano Cliff , South Sulawesi; 2 ° 28'59.1"S 121 ° 17'12.9"E, coll. C. D. Schubart et al., 16 Jan.2000 ; 3 males, 4 females ( ZRC 2000.1705 ) , 1 male, 1 female ( MZB 1495 ), Lake Matano, southwest coast near Matano , under roots and logs on sand, South Sulawesi, 2 ° 27'41.5"S 121 ° 13'6.3"E, coll. C. D. Schubart et al., 24 Jan.2000 ; 1 male ( MNHB 27375 ), Lake Matano , South Sulawesi, 02 ° 30.49'S 121 ° 19.96'E, coll. M. Glaubrecht & T. von Rintelen, 12 Aug.1999 ; 1 male ( MNHB 27374 ), Lake Matano , South Sulawesi, 2 ° 28.44'S 121 ° 15.78'E, coll. M. Glaubrecht & T. von Rintelen, 15 Aug.1999 .

Diagnosis. – Carapace flat, spotted in life, dorsal surfaces smooth; cervical groove shallow, narrow; H-shaped central depression pronounced. Epigastric and postorbital cristae continuous, sharp, subparallel to frontal margin; outer edge of cristae almost reaching anterolateral margin, stopping just before base of first epibranchial tooth. Front with slight depression, entire; frontal median triangle distinct, complete, ventral sides recessed. External orbital angle broadly triangular, outer margin almost straight, about 2 times length of inner margin, first and second epibranchial teeth distinctly triangular. Posterolateral regions lined with oblique striae. Suture between thoracic sternites 2 and 3 almost complete, gently concave towards buccal cavity to almost straight. Palm of chelipeds inflated, fingers shorter then palm, pollex and dactylus pigmented black throughout half the length towards tip. Ambulatory legs relatively long, second pair longest. Dorsal margin of merus smooth, without distinct subterminal spine. Male abdomen reaching imaginary line joining anterior edges of cheliped bases, T-shaped, segment 6 distinctly longer than segment 7; lateral margins of segment 7 gently concave; lateral margins of segment 6 subparallel, gently sinuous. G1 slender, relatively straight, directed upwards, outer margin almost straight, proximal part not clefted; distal part tapering. G2 with well developed distal segment, about 0.6 times length of basal segment.

Distribution. – Lake Matano, South Sulawesi.

Remarks. – Parathelphusa pantherina was first described by Schenkel (1902) from seven male specimens from Lake Matano. In his paper, Schenkel (1902) did not specify a holotype. Bott (1970c) in his monograph, designated a male specimen 36.0 by 28.0 mm as the lectotype. He also noted that together with the same lot (NMB 21a) as the lectotype, there was also a paralectotype female. This second bit of data is confusing. Listed in the Basel Museum catalogues under NMB 21a are five male specimens of Parathelphusa pantherina , and a physical check by the first author at NMB verified this. According to the catalogue cards, of these five males, one specimen was the one selected by Bott (1970c) as the lectotype and was subsequently relabelled NMB 21b. The rest are therefore paralectotypes. However, for some some inexplicable reason, this lectotype male is now dried while the rest of the specimens are still in alcohol.

Of all the species of Parathelphusa found in Sulawesi, P. pantherina is the only one which is as distinctly spotted. Dark-red rosettes extend from the carapace to the ambulatory legs, and this pattern is even discernible in long preserved specimens. This character, along with its flat carapace and distinctive slender, relatively straight G1 easily differentiates it from all its congeners in Sulawesi.

Figures

Fig. 1. Parathelphusa pantherina (Schenkel, 1902), paralectotype male (42.4 x 31.2 mm, NMB 21A): A, dorsal view; B, frontal view; C, ventral view.

Fig. 3. Left G1 and G2. A-E, Parathelphusa pantherina (Schenkel, 1902), paralectotype male (42.4 x 31.2 mm, NMB 21A): A, G1 ventral view; B, G1 dorsal view; C, G1 distal part, ventral view; D, G1 distal part, dorsal view; E, G2. F-I, Parathelphusa sarasinorum (Schenkel, 1902), lectotype male (38.9 x 31.5 mm, NMB 22B): F, G1 ventral view; G, G1 dorsal view; H, G1 distal part, ventral view; I, G1 distal part, dorsal view. Scale bars = 1.0 mm.

Fig. 11. Parathelphusa celebensis (De Man, 1892), 1 male (33.3 x 26.1 mm) (lectotype of Potamon (Potamonautes) celebense var. immaculata Schenkel, 1902): A, dorsal view; B, frontal view; C, ventral view.

Fig. 12. Parathelphusa pallida (Schenkel, 1902), lectotype male (23.9 x 18.3 mm, NMB 23VIb): A, dorsal view; B, frontal view; C, ventral view.

Fig. 13. Parathelphusa pallida (Schenkel, 1902), female (NMB 23 Ia) (lectotype of Potamon (Potamonautes) celebensis var.annulipes Schenkel, 1902): A, dorsal view; B, frontal view; C, ventral view.