A taxonomic study to differentiate the species or cytotypes of the Simulium damnosum complex with particular reference to West Africa: report 3. period of May 3 to November 2, 1976

.) ONCHOCERCIASIS CONTROL PROGRAI}IME IN THE VOLTA RIVER Research report Title of agreement; A ta1gngnriC Study cytotypes of the Simulium damnosum to West Africa. i v: ''i r,: : r :iv-rit__-. ---' to differentiate the species or complex with particular reference BASIN AREA I f-l I il ANNEX Institution; Biosystematics Research Institute through MemorialUniversity of Newfoundland Research personnel: : (research scientists and technicians) I Type of report: Third Quarterly Report Date submi ttecl: November 3, L976 Period covered: August 3 - November 2, 1976 Name and title of responsible research worker B.V. Peterson Annelle Soponis B.V. Peterson Head Diptera Section Recoived in OGP' 10 Nov 1976 Report 3. Period of August 3 to November 2, 1976 A report, "A Preliminary Investigation of Some Morphological Characters In Adult Females of the Simulium damnosum complex from Togo" was completed (23 typed pages, plus appendix), and submitted with previous quarterly report. I'our shipments of JuIy 27 z 3 JuIy 28t 3 August 30: October L2z The specimens of of 57 adult males for examination. shape and size of and the relative prepared to show these differences specimens from the lvory Coast were received: via1s, adults and immatures, 4 species vials, adults and immatures, 3 species 3 vials, adults and immatures, 2 species I vial, larvae, 1 species July 27 were chosen for study. The genitalia were dissected, cleared, and mounted in glycerine Tentatively, 4 species were distinguished by the the ventral pIate, the shape of the gonocoxite, overall size of the genitalia. Figures were these differences, although the significance of is yet to be verified. During this period, the research associate continued to search the literature.