Akyol M.Koç K.2024-07-222024-07-2220070044586Xhttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/19097This study reports on variations between specimens of T. stramenti-cola Bolland, 1986 and T. poloniciis Bolland, 1986. Significant differences were observed in setal lengths and abnormal variations of specimens of both species. However, the setal variations observed raised the following questions: (i) what is the validity of other closely related species whose setal lengths differ only slightly from those of T. stramenticola and T. poloniciis? (ii) are setal lengths useful characters to distinguish between closely related species in the genus Tycherobius?EnglishArticle