重庆盾腹吸虫一新种(吸虫纲:盾腹目:盾腹科)

记述了盾腹吸虫1新种，即重庆盾腹吸虫Aspidogaster chongqingensis sp.nov.并与其它相似种进行比较。新种体呈椭圆形，盾盘较大，几占虫体腹面大部，由48－50个小槽组成，分为4排；口直径0．144－0．169mm，咽椭圆形，较大。

A NEW SPECIES OF ASPICOGASTRIDS FROM FISHES OF CHONGQING, CHINA ( TREMATODA: AS PIDOGASTRATA: ASPIDOGASTRIDAE)

A new species of Spidogastrids belonging to Aspidogastredae, has been collected from the Jialing River of Chongqing, China. Type specimens are deposited in the College of Bioscience, Southwest China Normal University. Their diagonoses are as follows(Unit:mm).Aspidogaster chongqingensis sp.nov. (Figs.1-6) Host. Spinibarbus sinensis(Bleeker). Location. Foregut. Locality. Chongqing, China. Infection. 12 speciments from 6 of 18 hosts. Type specimens holotype F101,paratype S102. Aspidogastrids elliptical shape,2.236-2.905 in length with width of body 1.264-1.470.Aspidate disk well developed, 2.013-2.554 by 1.360-1.591,consists of 48-50 marginal alveoli, and most of body overspreaded by it.Without sensory papillate on the surface of aspidate disk.Oral area small,0.144-0.169,and oral sucker lack.Pharynx large,0.278-0.296 by 0.238-0.305. Testis single, elliptical shape, 0.398-0.558 by 0.216-0.289.Ovary ovoid in shape,on top of testis, 0.201-0.299 by 0.167-0.195.A lot of eggs exist in body, eggs measuring 0.059-0.082 by 0.038-0.053. Appearance of new species similar to A.ijimai and A.indica, but differ from them in the number of marginal alveoli. Internal organ of new species even more similar to A.ijimai. but differ from latter in size of oral area and pharunx, length of aspidate disk and body in ration, esist of sensory papillate.