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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->1992 Vol.11 No.2

Study on A New Species of Brachylaima (Digenea:Brachylaimidae)
Author of the article:YANG Guang-you1,ZHENG Ji-gui1, LAI Chong-long2
Author's Workplace:(1.Sanitary and Anti-Epidemic Station of Yaan Prefecture, Yaan, Sichuan privince 625001; 2.Sichuan Agricultural University, Yaan, Sichuan privince 625014)
Key Words:Trematoda; Brachylaimidae; Brachylaima; new specise
Abstract: 

This paper reports a new species of Brachylaima (Digenea: Brachylaimidae) collected from Anourosorex squamipes Milne-Edwards in Yaan, Sichuan, China. All the measurements are in mm. and average in parenthesis. The type specimens are deposited in Sanitary and Anti-Epidemic Station of Yaan Prefecture, Yaan, Sichuan, China.

  Brachylaima yaanensis sp. nov. (Fig, 1-4)

  Body elongated elliptical with spines, 4.300 - 6.650 × 0.950 - 1.450 (5.336 × 1.277). Oral sucker subterminal, round-shaped, 0.400 - 0.500 × 0.350 - 0.430 (0.467 × 0.393); acetabulum round, larger than oral sucker, 0.400 - 0.630 × 0.400 - 0.500 (0.516 × 0.486), in one-fourth to fifth of the body. The ratio of two suckers 1:1.143 - 1.279 (1:1.237), acetabular indes 1:10.750 - 12.091 (1:10.979). Prepharynx absent, pharynx 0.180 - 0.220 × 0.150 - 0.200 (0.200 × 0.176). No trace of esophagus, ceca sinous, reaching to the subterminal of the body.

  Testes sub-globular, anterior testis 0.340 - 0.630 × 0.320 - 0.500 (0.505 × 0.470), posterior testis 0.380 - 0.500 × 0.330 - 0.500 (0.438 × 0.425). Cirrus pouch well-developed, elongated saccular, 0.530 - 0.800 × 0.043 - 0.075 (0.685 × 0.056). Pars prostatica outside of the cirrus pouch, inner seminal vesicle 0.120 - 0.138 × 0.050 - 0.063 (0.129 × 0.057), outer seminal vesicle well-developed, ellipitical, 0.250 - 0.450 × 0.063 - 0.125 (0.312 × 0.084). Gential pore in the front of anterior testis, or slightly to the left. Ovary ellipitical, 0.295 - 0.450 × 0.270 - 0.410 (0.400 × 0.345), between testes. Vitellaria follicules extending in lateral fields from behind acetabulum to the anterior testis. Uterus coils mainly occupied the intercecal area from cecal arch to the anterior testis. Eggs ellipitical, 0.028 - 0.030 × 0.015 (0.029 × 0.015). Excretory vesicle Yshaped.

  Host: Anourosorex squamipes Milne-Edwards

  Location: Intestine

  Locality: Yaan, Sichuan, China

  Type specimens: Holotype 1, paratype 9

  Diagnosis: The new species is closely related to B. gigas Wang et Jiang, 1986, B. crispocoelium Zhu et Gu, 1982 and B. eophonae Yamaguti, 1941, but differs from B. gigas in : Body with spines, acetabulum in one-fourth to fifth of the body and cirrus pouch larger; and from B. crispocoelium in : Body larger, acetabulum in one-fourth to fifth of the body and cirrus pouch well-developed; and from B. eophonae in: Vitellaria follicules smaller, commencing from behind acetabulum to anterior testis and eggs smaller.
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