Quadrivisio bengalensis Stebbing, 1907

Hughes, Lauren E. & Kaji, Tomonari, 2016, Description of a new species of Quadrivisio Stebbing, 1907, from Songkhla Lake, Thailand (Crustacea: Peracarida: Amphipoda: Maeridae), Raffles Bulletin of Zoology 64, pp. 351-359 : 353

Quadrivisio bengalensis Stebbing, 1907

( Figs. 1 , 2 )

Quadrivisio bengalensis Stebbing, 1907: 159–162 , plate VII; Chilton, 1921: 537, fig. 6; Chilton, 1925: 534; K.H. Barnard, 1935: 287; Schellenberg, 1938: 63; Nayar, 1959: 26, pl. 9, figs. 1–19; Rabindranath, 1972: 162, figs. 6, 7; Barnard & Barnard, 1983: 619; Ren, 2012: 302–304, fig. 133.

not Quadrivisio bengalensis, Chevreux, 1913 : in part (= Q. chevreuxi Gordon & Monod, 1968 ); Bousfield, 1971: 260–263, figs 3, 4 (= Q. bousfieldi Karaman & Barnard, 1979 ).

Type locality. Port Canning , Lower Bengal, India .

Material examined. 1 male, 11 mm, dissected, 5 slides, PSUZC-CR 0308 ; 3 males, 17 juveniles and females (6–11 mm), PSUZC-CR 0309 , Khu Khut Bird Sanctuary , Songkhla Lake Basin, Thailand, approx. 7°27’N, 100°24’E, inshore, 13 December 1999, coll. J.K. Lowry and V. Lheknim ; 3 females, PSUZC-CR 0310 , Songkhla Lake, Thailand, 1987–1989 .

Remarks. In the genus Quadrivisio the morphology of subadult male is similar across species. The male specimens examined here are considered mature however there remains the possibility that a more mature male morphotype remains unobserved.

Distribution. India: Bengal, Kerala, Samal Island, Barkul, Satpara, Ghiakhala region, Adyar, Vizagapatam, Travancore ( Stebbing, 1907; Chilton, 1921; K.H. Barnard, 1935; Nayar, 1959). Kenya: Mombasa ( Chevreux, 1913). Fiji ( Schellenberg, 1938). Thailand: Songkhla Lake [Tale Sap] ( Chilton, 1925; current study). South China Sea ( Ren, 2012)

Figures

Fig. 1. Quadrivisio bengalensis Stebbing, 1907, male, 11 mm, PSUZC-CR 0308, Songkhla Lake, Thailand. Scale bars = 0.1 mm.

Fig. 2. Quadrivisio bengalensis Stebbing, 1907, male, 11 mm, PSUZC-CR 0308, Songkhla Lake, Thailand. Scale bars = 0.1 mm.