94 



REPORT ON ECONOMIC ENTOMOLOGY 



ho unsound. Tlic Queenslnnd Fruit Fly (/>'/'».< li/ronl, Froggatt) also does much damage. 

 Closely related to it is the Guava Fruit Fly ( Dtieun piKulll, Froggatt^, which attacks 

 Guavas in new Caledonia, and the South Sea Fruit Fly (Triijiflu niiinfr, Froggatt) 

 which is fouml in bananas from tlic New Iltliridi's. A well-known species, Ifucun 

 I'trniijiiirii*, attacks fruit in India. 



Now we have to add another species attacking the melon in the Sudan. 



The larva- were sent to Dr. Balfour ami to Mrs. IJroun liy Mr. Durrani, and the (1y 

 was bred out by them. Dr. Halfour sent me the laboratory specimens. 



This insect comes very near to Froggatt's species, /funis ti/roni, the Queensland 

 Maggot Fly, but it is quite distinct. 



The genus /hirw, differs from Crnil'itit, in having a less reticulate basal area to 

 the wings, and from Trypcta in having the wings unadorned witji dark anas over their 



Fi^;. .''.''. -TiiK Mklon Fkiut Fi.v {Dactts sp.) 



A Larva (enlarged five limes) ;_ <?! Spiracular plate ; tt2 further enlarged spiracle : aZ ventral 



process ; rt4 and aG side view and front view o( head ; ah mandibles ; l» puparium ; 



c further enl;irge<l (losterior end of D 



greater surface. The rot these maggots cause in fruit is very serious and according to 

 Dr. IJalfour the Sudan Melon Fly will probably prove a very serious enemy just as 

 the others do in various parts of the world. 



The Sudan iiieioii llv is soiiicwliat wasp-lilce in general appearance. The head is 

 yellowish between the eyes, wliieh are large and dark, there is a dark spot on the occiput and 

 two oval black spots on the face below the antenmc, which are yellow with dark apex ; the 

 arista is simple. The thorax is slaty grey with minute deep brown specks and fine, pale, 

 backwardly-directed shmt hairs, a bright nude yellow area at each shoulder, a yellow nude 

 plate on each side in front of the base of each wing which passes as a narrow, wedge-shaped, 

 area into the median transverse suture, the lower an a of this spot is formed on the pleurie, 

 and there is a snniller one below it and another on tlic iiieura' just behind the wings; the 

 scuttdlum is yellow and nude, and the metanotuni ileep slaty grey. 



The abdomen is much contracted basally an<l acute ajiicallv, the basal segment is brown, 

 the second has a yellow apical border, the remainder deep brown. 



The legs are dull pale yellowish, somewhat transparent basally ; the feet dark brown, 

 the apex of femora and base of the tibiaj reddish-brown. 



