摘要
本文描述了在中国江西、湖南及广东三省发现的华溪蟹属Sinopotmon三个新种:不等叶华溪蟹S.unaequum,sp.nov.,双叶华溪蟹S.bilobatum sp.nov.及南岭华溪蟹S.nanlingense SD.nov.
Sinopotamon unaequum sp. nov. (P1. 1.1, fig. 1)Holotype ♂, allotype ♀ (JX8188083), paratypes 3♂♂, 5♀♀(2 juv.), Jianggangshan reclaim and cultivate wasteland farm, Jianggangshan City(26.5N, 114.1E) Jiangxi Province, November 1986; 3♂♂, 2♀♀, Anfu County, Jiangxi Province, August, 1981.Surface of carapace with scattered short setae which near the postero-lateral margin with 20-25 serrated teeth. Male first pleopod reaching the tubercle of the fifth sternum, the penultimate segcent about 2.5 times as long as the last segment, dorsal lobe of the last segment rounded truncate and longer than ventral lobe. Male abdomen triangular in shape, its sixth segment about 2 times as broad as long, its ultimate segment about 1.2 times as broad as long.Among Sinopotamon, there are only 3 species, S. shensiense, S. henanense and S. unhweien-se, with unequal lobes in its distal segment of the first pleopod. But this new species differs from the above 3 in having an indistinctly apering last segment and truncated distal end of its first pleopod.Sinopotamon bilobatum sp. nov. (PI. 1:2, fig. 2)Holotype ♂, allotype ♀ (JX8288081), Wanzai County. (28.1N, 114,4E), Jiangxi Province, September, 1982; paratypes, 6♂♂ (1 juv.) 2♀♀ (1 juv.), Wanzai County, Jiangxi Province, November 1986; 2♂♂ (2 juv.), 2♀♀ (2 Juv.), Xiushui County, Jiangxi Province, November 1986; 1♂, Yueyang County, Hunan Province, September 1982.Carapace comparatively flattened. Antero-lateral margin with 12-17 blunt teeth. Male first pleopod not reaching the tubercle of the fourth sternum, its penultimate segment about 3 times as long as the last segment which being bent innerwards about 90 degrees. Male abdomen .triangular in shape, its sixth segment about 2.4 times and the ultimate segment about 1.4 times as broad as long.Similar to S. shensiense (Rathbun 1904) but can be distinguished from the latter by its an-tero-lateral teeth being much closed; its last segment of male first pleopod being not much curved and with its dorsal lobe being longer than the ventral, Sinopotamon nanlingense sp. nov. (PL L:3, fig.3)Holotype ♂, allotype: ♀ (HN8688082), paratypes: 2♂♂, 2♀♀, Yongjiang Village Shua-ngpai County (25.9N, 111.6E), Hunan Province, October 7, 1987; 2♂♂, 3♀♀(1 juv.), Shuang-pai County, Yongjiang Village, Hunan Province, October 11, 1987; 9♂♂, 5♀♀(2 juv.), Yongzhou City, Futian Village, Hunan Province, October 7, 1987; 4♂♂, 3♀♀(1 juv.), Yongzhou City, Zhengjiaqiao County, Hunan Province, September 1987; 3♂♂(l juv.), 3♀♀(1 juv.), Dao County, Hunan Province; 1♂, Lian County, Guangdong Province, September 7, 1985.Carapace slightly convex comparatively smooth. Antero-lateral margin with 15-17 serrated teeth. Male first pleopod not reaching he tubercle of the fifth sternum, its penultimate segment about 3.6 times as long as the ultimate segment which inner-dorsally directed, duck-beak-like. Male abdomen triangular in shape, the sixth segment about 2.0 times as broad as long, the ultimate segment about 1.3 times as broad as long.Closely related to S. bilobatum sp. nov., but can be distinguished from the latter by its distal segment of the first male pleopod being truncated in natural position; in lateral view, with its distal end being duck-beak-like in shape and not strongly curved.
出处
《动物分类学报》
CSCD
1991年第3期290-296,共7页
Acta Zootaxonomica Sinica
基金
国家自然科学基金
关键词
十足目
华溪蟹科
华溪蟹属
新种
Decapoda Sinopotamidae Sinoporamon new species.
