ETHIOPIAN FRUIT-PLIES OF THE GENUS DACUS. 87 



The known species are as follows : — • 



I. Wings with a rounded brown spot at the end, which reaches the fourth 



vein (fig. 4). 



1. lounsburyi, Coquill. 



2. sphaeristicus, Speis. 



3. fuscovittatus, Grah. 



II. Wings with a very broad brown costal border, which reaches at least the 



middle of the first posterior cell (fig. 5). 



4. fuscatus, Wied. 



5. nebulosus, Walk. 



6. armatus, F. 



7. hivittatus, Big. 



pectoralis, Walk. 

 bipartitus, Grah. 

 cucumarius. Sack. 



III. Wings with a narrow costal border, not extended over the third vein. 



1. Two yellow hypopleural spots.* 



(a) Hypopleural spots broad and contiguous, forming a single spot (fig. 6). 



(a) Face without black spots. 



8. immaculatus, Coq. 



(6) Face with two black spots ; wings without brown anal stripe. 



9. longistylus, Wied. 



testaceus, Macq. 

 kingi, Frogg. 



10. sexmaculatus, Walk. 



(c) Face with two black spots ; wings with a brown anal stripe. 



11. punctatifrons, Karsch. 



12. vertebratus, Bezzi. 



(b) Hypopleural spots small and separated (fig. 11). 



13. flavicrus, Grah. 



2. Hypopleura wdth a single yellow spot (fig. 7). 



(a) Face not black spotted, entirely yellow. 



14. annulatus, Beck. 



15. semisphaereus, Beck. 



16. brevistriga, Walk. 



17. scaber, Loew. 



18. binotatus, Loew. 



(b) Face entirely black. 



19. inornatus, Bezzi. 



modestus, Bezzi. 



(c) Face with two black spots. 



(a) Wrings with only a dark apical spot, without costal border. 



20. oleae, Gmel. 



21. mesomelas, Bezzi. 



22. bistrigulatus, Bezzi. 



* Of these spots, one is on the hypopleura and the other is on the sides of the 



mesophragma ; this latter only may bo absent. 



(C'177) a2 



