Cheke R A, Garms R, Ouedraogo J, Somé A, Sowah S
Tropical Development and Research Institute, London.
Med Vet Entomol. 1987 Jan;1(1):29-35. doi: 10.1111/j.1365-2915.1987.tb00320.x.
The Beffa form of Simulium soubrense Vajime & Dunbar, a member of the S. sanctipauli sub-complex of the S. damnosum complex, was found breeding throughout rivers in the Togo-Benin Gap, as far north as 9 degrees 30'N. Its distribution changed with the season. In southern Togo there were seasonal fluctuations in the relative abundancies of the Beffa form and of S. damnosum/S.sirbanum. There was considerable temporal and regional variation in the frequencies of different colour morphs of adult flies. The flies in Benin tended to be darker. Infections with Onchocerca volvulus (Leuckart) appeared to be independent of the host's colour morph category. Larger flies harboured significantly more first stage Onchocerca larvae but no significant relations with fly size were found for second and third stage larvae.
soubrense Simulium的贝法形态（Vajime和Dunbar），它是damnosum蚋复合体中sanctipauli蚋亚复合体的成员，被发现分布于多哥-贝宁间隙的整个河流中，最北可达北纬9度30分。其分布随季节变化。在多哥南部，贝法形态以及damnosum蚋/sirbanum蚋的相对丰度存在季节性波动。成年蝇不同颜色形态的频率在时间和区域上存在相当大的差异。贝宁的蝇往往颜色更深。盘尾丝虫（Leuckart）感染似乎与宿主的颜色形态类别无关。较大的蝇携带的第一期盘尾丝虫幼虫明显更多，但未发现第二期和第三期幼虫与蝇的大小有显著关系。
