A study of the Exoprosopa busiris (Jaennicke) group of Bezzi (1924) in tropical Africa (Diptera: Bombyliidae) Author Greathead, D. J. text Journal of Natural History 2001 2001-12-31 35 1 127 147 10.1080/002229301447907 journal article 1464-5262 Exoprosopa brevinasis Bezzi (Figures 5, 10) Exoprosopa brevinasis Bezzi, 1924: 343 , Kenya [examined] Exoprosopa engyoptera Hesse, 1956: 874 , Kenya , syn. n. E. brevinasis is very variable in size and some specimens approach the size of E. goliath which may, therefore, only be giant specimens of E. brevinasis . The description of E. engyoptera is clearly that of a specimen of E. brevinasis , a species which Hesse had not seen. Bezzi (1924) gives a full description. Diagnosis As E. luteicosta but: proboscis longer, face only bluntly produced, only buccal rim pale, black tuft almost absent. Flagellomere 2 longer. Hair yellow on mesonotum, tinged yellowish on pleura. Scales on legs ochreous. Bands on terga of even width, yellowish. All sterna with white scales and yellowish hair. Wing (®gure 5) with cross veins heavily infuscated, longitudinal ones less so. Discal cell not bulging into r 5 which is greatly narrowed at wing margin. Male genitalia (®gure 10) similar to E. luteicosta , sides of epiphallus straight. Length of body, 13±18 mm ; of wing, 15± 21 mm . Material examined Kenya : Kibwezi , 1 3 l m, ii.1929 , van Someren ( BMNH ) ; Makumi , Ukamba , 1 1 l m, v.1947 , van Someren ( BMNH ) ; Athi River , 1m , 27.iv.1967 , D. J. Greathead ( DJG ) ; Narok , 2m , 23.iii.1975 , ( Coll. 139) ( DJG ) ; lower western slopes Ngong Hills , grassland acacia, 5000 ft , 1 1 l m, v.1971 , G. R. Cunningham-van Someren ( DJG ) ; Kabete , 1, l 6.v.1913 , T. J. Andersson ( BMNH ) ; Lukenia , 2m , iii.1937 , van Someren ( BMNH ) ; SW Turkana , 1, l 24.iv.1954 ( DJG ) . Tanzania : 50 miles N of Dodoma , 1 2 l m, 7.v.1966 , D. and A. Greathead ( DJG ) ; 15 miles S of Longido , 2m , 30.iv.1966 , D. and A. Greathead ( DJG ) ; plains E of Arusha , 1 2 l m, 30.iv.1966 , D. J. Greathead ( DJG ) ; Arusha , 4m , 19.ix.1967 , D. J. Greathead ( DJG ) ; Old Shinyanga , 1m , 4.iv.1952 , E. Burtt ( BMNH ) ; E Kilimanjaro , Mt. Meru , 4500±5000 ft , 1m , iv.1937 , B. Couper ( BMNH ) . Zambia : 7 miles NE Broken Hill , 1m , 1.i.1912 , F. V. Bruce Miller ( BMNH ) . Distribution Kenya , Tanzania , Zambia (®gure 18).