African Dacus (Diptera: Tephritidae); New Species and Data, with Particular Reference to the Tel Aviv University Collection Author White, Ian M. Author Goodger, Kim F. M. text Zootaxa 2009 2127 1 49 journal article 10.5281/zenodo.274925 534e3106-2d37-4f90-98c7-fe3fab66dc7b 1175-5326 274925 Dacus ( Didacus ) frontalis Becker ; aberrant form Dacus frontalis Becker, 1922 : 74 Other synonyms: White (2006: 83) Material. SUDAN : 1 female , W. Halfa Dist., Ashkeit, 8.x.1962 , S. Panelius ( TAU ) Remarks. This species, in common with other members of sg. Didacus lacks a medial vitta. However, this specimen has a narrow yellow medial stripe along the midline of the postscutum. It was initially thought that it must be a misidentified D. siliqualactis Munro, 1939 a, a species with a medial vitta often confused with D. frontalis by earlier authors. This specimen has a velvet raised area on the frons, and only the midfemur bicoloured (others entirely pale), which are typical features of D. frontalis and clearly separate it from D. siliqualactis . This is therefore assumed to be D. frontalis which has a pale surface mid-line, typical of many specimens, unusually bright and yellowish and therefore liable to be misinterpreted as a medial vitta.