SIMULIIDAE OF AFRICA 131 



' $ ' sex label ; a circular red-bordered ' Type ' label with the inscription ' Simu- 

 lium wellmanni Roubaud ' in Austen's writing and a hand-written label reading 

 ' Native name " Ohomono ". These tiny flies bite viciously and are dreaded by 

 naked porters. Their bite leaves a large raised wheal, with a small red spot in 

 the centre. It itches for several days. (Note by donor) '. 



weyeri Garms & Hausermann, 1968, Revue Zool. Bot. afr. 78 : 67 {Simulium). 

 Holotype <J ex pupa, Tanzania : ZSM, Hamburg. 



wolf si Wanson & Henrard, 1944, E. Afr. med. J. 21 : 38 {Simulium). Syntypes $, 

 $, pupae, Democratic Republic of Congo : MRAC, Tervuren. 



woodi de Meillon, 1930, Bull. ent. Res. 21 : 190 {Simulium). LECTOTYPE $ [by 

 present designation], Malawi : BMNH, London. 



The original description of woodi was based on four female syntypes collected by 

 Wood in September, 1917, at Cholo, Nyasaland. Two of the syntypes (one pinned, 

 the other slide-mounted in parts) are in BMNH, London, and the pinned specimen 

 (labelled ' -.ix.17 Cholo Nyasaland. 3000'. R. C. Wood. On wooded hill 980 ' 

 on circular white label) has been labelled and is here designated as lectotype. 

 Two other females are in BMNH collection from the type-locality, also collected 

 by Wood, but these specimens bear the date 26.xi.20 : as the data is different 

 from that cited by de Meillon in the original description they are not considered 

 to be part of the syntypic series. 



zombaensis Freeman & de Meillon, 1953, Sim. Ethiop. Reg. : 194 {Simulium, as 

 form of taylori Gibbins, 1938). Holotype <$ pupa, Malawi : BMNH, London. 



acknowledgements 



I have much pleasure in acknowledging the helpfulness and generosity of specialist 

 colleagues who have provided me with valuable information or with the exchange or 

 gift of material, and in thanking the many persons who, over the past eight or nine 

 years during the preparation of this paper, have sent me material from the field in 

 Africa and its islands. 



For the unrestricted use of the collection in the Diptera Section of the British 

 Museum (Natural History) and for the opportunity of much valuable discussion I 

 thank Dr. Paul Freeman ; for extra-limital material required for comparative 

 purposes I thank Dr. Alan Stone (U.S. National Museum, Washington) and Dr. I. A. 

 Rubzov (Zoological Institute, Academy of Sciences, Leningrad) ; and for the loan 

 of some African material I thank Dr. E. Haeselbarth, formerly of the South African 

 Institute for Medical Research. 



For material sent to me from Ethiopian Africa I am most grateful to the follow- 

 ing : Dr. F. M. Chutter, Mr. A. D. Connell, Mr. J. B. Davies, Professor A. Fain, 

 Dr. R. Garms, Professor A. D. Harrison, Dr. W. Hausermann, Mr. R. B. Highton, 

 Dr. J. Hitchcock, Professor B. Hocking, Dr. D. J. Lewis, Dr. M. Lips, Dr. H. Loffler, 

 Dr. E. Luna de Carvalho, Mr. A. W. R. McCrae, Mr. J. P. McMahon, Dr. H. J. 

 Schoonbee, Dr. J. M. Watson and Mr. T. R. Williams. For material from the 

 islands and North Africa, as shown, I am much indebted to : Dr. L. Davies (La 



