Macrobrachium maculatum Liang & Yan, 1980

Guo, Zhao-Liang & He, Shun-Lian, 2008, One new and four newly recorded species of the genus Macrobrachium (Decapoda: Caridea: Palaemoindae) from Guangdong Province, southern China, Zootaxa 1961 (1), pp. 11-25 : 22-24

Macrobrachium maculatum Liang & Yan, 1980

( Fig. 7E )

Macrobrachium maculatum Liang & Yan, 1980: 31 , figs. 8–14 [type locality: Yongan County, Fujian Province, eastern China]; Liu et al., 1990: 114, fig. 12.

Material examined. 5 females, tl. 45.8–54.0 mm, cl. 12.0– 18.3 mm, 4 males, tl. 35.6–75.8 mm, cl. 9.6–19.8 mm, Xijiang river near Foshan City , 7 July 2002 ; 4 females, tl. 40.8–65.0 mm, cl. 10.0– 16.32 mm, 3 males, tl. 41.5–70.3 mm, cl. 8.7–22.2 mm, Xianxi reservoir near Dali Town, Nanhai District , Foshan City , 28 October 2001 ; 2 females, tl. 41.2–59.0 mm, cl. 13.0– 19.2 mm, 1 male, tl. 87.5 mm, cl. 22.3 mm, near Shangshuai town , Lianshan County, Guangdong Province, 14 July 2004 ; 1 male, tl. 76.2 mm, cl. 21.5 mm, Lianzhou County, Guangdong Province, 16 July 2004 .

Diagnosis. Rostrum reaching end of scaphocerite, the distal part slightly curved downwards, rostral formula: 3–5 + 6–9/3–5, rl. about 0.60–0.69 cl. Cephalothorax rough with microspinules, abdomen and telson smooth. Second pereiopods equal in both sexes, all joints rough, covered with microspinules, finger about 0.56–0.67 times palm, cutting edge of fixed finger with 2 teeth at proximal, basal tooth formed of 2 or 3 denticles, moveable finger with 2 proximal teeth; carpus shorter than palm, about 0.75–0.89 times palm, about 1.1–1.2 times merus; merus about 1.3 times ischium. Egg size: 1.60–1.70 X 2.13–2.41 mm in diameter.

Live coloration. The body is very dark brown, cephalothorax with yellow diagonal stripes, and the abdomen has large spots ( Fig. 7E ).

Remarks. The present materials agree quite well with the original description and illustrations of Liang & Yan (1980) and Liu et al. (1990). This is the first record of the species in Guangdong Province. This species is widely distributed in southeastern China, having economic importance and usually found together with M. nipponense .

Distribution and habitat. Southeastern China (Anhui, Hunan, Fujian and Guangdong Provinces). This species inhabits freshwater and has been found in rivers, reservoirs and streams. It seeks shelter among aquatic vegetation.

Figures

FIGURE 7. A, M. heterorhynchos, preserved specimen, paratype, female (FSTC, 02–06–11–05). B, M. heterorhynchos, preserved specimen, holotype, male (FSTC, 02–06–11–01). C, M. formosense, living specimen, male. D, M. inflatum, living specimen, female. E, M. maculatum, living specimen, male.