【摘要】 <正> 随着肺吸虫病的广泛深入调查,作者于安徽省的歙县、旌德、宁国、祁门、石台、贵池、霍山,福建省的建瓯、龙海等处,特别对发病地区的肺吸虫第二中间宿主的淡水蟹类进行了调查。所采获的大量标本多数均作了寄生虫囊蚴的检查,少数保留作为分类鉴定的标本。在标本检查的过程中,发现其中有四新种一新亚种,兹报道如下。模式标本保留在中国科学院动物研究所。更多还原

【Abstract】 The authors carried out a series of field surveys and epidemiologic Andies on paragonimiasis in Anhui and Fujian Provinces. Many lots of different kinds of fre-shwater crabs harbouring metacercariae of lung flukes were collected and studied.Among these materials, 4 new species and 1 new subspecies have been identified, whosemain diagnostic characters are briefly dealt with below. All these type speciemens aredeposited in the Institute of Zoology, Academia Sinica. Isolapotamidae 1. Nanhaipotamon angulatum Dai et Lin., sp. nov. (pl. I:1; fig. 1) Holotype: 1; Allotype: 19; Paratype: 2, Jian’ou, Fujian, May-June, 1975;1 , Jian’ou, Fujian, June, 1976. Diagnosis: The postorbital regions concave. The epibranchial teeth distinct. Thelast segment of the first pleopod directed outwards, the middle portion of its dorsallobe being triangular in shape. Discussion: 3 species of the Nanhaipotamon have been recorded. With theexception of N. balssi Bott 1968, which is considered as a member of Malayopotamon,a comparison between the other 3 nearest species and the new species is given in Table1 in the Chinese text. 2. Isolapotamon nasicum Dai et Chen., sp. nov. (pI. I:2; fin. 2) Holotype: 1; Allofype: 1; Paratype: 1 , Longhai, Fujian, Oct. 27, 1975; 3 ,3, Longhai, Fujian, Jan. 1, 1976. Diagnoais: The postfrontal lobes and postorbital crests prominent. The outerorbital angle trianglar in shape. The ultimate segment of the first pleopod shorter thanthe penultimate segment. Discussion: This species is closely related to Isolapotamon griswoldi (Chace1.938). The differences between them are given in Table 2 in:the Chinese text. 3. Malayopotamon fukienense Dai et Lin., sp. nov. (pl. I:3; fig. 3) Holotype: 1; Allotype: 1; Paratype: 2 , 1 , Jian’ou, Fujian, Nov. -Dec.,1975; 1 , Jian’ou, Fujian, June, 1976. Diagnosis: The external orbital teeth obtuse. The epibranchial teeth blunt. Thefirst pleopod slender, slightly bended dorsally. Discussion: This species is closely related to M. purpureomanulis (Wu 1935)and allied to M. brevimargiantum brevimarginatum (de Man 1892) and M. brevimar-ginatum javanense (Bott 1968). The differences between them are given in Table 3 inthe Chinese text. Sinopotamidae 4. Sinopotamon yangtsekiense anhuiense Dai et Fan, subsp. nov. (pl. I:4;fig. 4) Holotype: 1; Allotype: 1; Shitai, Anhui, Sept. 11, 1964; Paratype: 1, 1,Shitai, Anhui, April, 1964; 3, 3, Shitai, Anhui, July, 7, 1976. Diagnosis: With sharp and sparse teeth at antero-lateral margin. The immovablefingers stout, with truncated tip. Discussion: Sinopotamon yangtsekiense anhuiense is a new subspecies of S. yangtse-kiense, because the intermediate individual was found in Shexian. 5. Sinopotamon depressum Dai et Fan, sp. nov. (pl. I:5; fig. 5) Holotype: 1; Allotype: 1; Paratype: 1, Huoshan, Anhui, June, 1974; 1,Guichi, Anhui, May, 2, 1976. Diagnosis: The surfase of the carapace depressed. The grooves between regionsdeep. The end of the dorsal and ventral lobes of the first pleopod hollowed. Disscussion: This new species is nearly related to S. yangtsekiense yangtse-kiense Bott, 1967. The differences between S. yangtsekiense yangtsekiense, S. yangt-sekiense anhuiense subsp. nov. and S. depressum sp. nov. are shown in Table 4 in theChinese text.更多还原