FRUIT FLIES OF THE GENUS DACUS. 113 



different coloration of the scutelliim, and tiie entirely unicolorous wings. The humeral 

 yellow spot is broadly margined with black at fore end and on inner side. Originally 

 described from Mysore (Type in British Museum), there is another specimen from the 

 same locality. Another male specimen in the Indian Museum from Coonoor, 6,000 ft., 

 Nilgiris, vi.l912 {Capt. Seivell). 



20. Chaetodacus scutellaris, Bezzi (1913). 



Bactrocera scutellaris, Bezzi, Mem. Ind. Mus., iii, 1913, p. 98, pi. viii, fig. 10. 



Allied to the two preceding species, but easily distinguished by the different 

 coloration of the scutellum, by the middle postsutural yellow stripe on the thorax, 

 and by the well developed anal brown streak on the wings. In the present species 

 the yellow spot on the humeral calli is only margin:'d with light brown (not black) 

 at the inner fore corner. 



Two females in the Indian Museum from Almora, 5,500 ft., Kumaon, xi.l912 

 (C. Paiva) ; Taung-gyi, S. Shan States, 4,000 ft., 1 .iii. 1910 (A'. D. Shroff). 



Note. It is interesting to see that, while in the Ethiopian fauna there is the unique 

 D. mesomelas, Bezzi, from Congo and Ashanti, with a defined black pattern on the 

 scutellum, in the Oriental fauna on the other hand there are so many species with 

 patterned scutellum. Those known to me may be distinguished as follows : — 



1 (8). Only two scutellar bristles. 



2 (5). Only two pairs of lower fronto-orbital bristles ; cephalic and thoracic 

 bristles yellow ; scutellar pattern less defined. 



3 (4). Thorax in greater part black ; scutellum with a darkish spot at the end ; 

 wings with anal brown stripe . . . . . . . . . . . . incisus, Walk. 



4 (3). Thorax in greater part reddish ; scutellum with two yellow spots ; wings 

 without anal stripe . . . . . . . . . . . . . . versicolor, n. 



5 (2). Three pairs of lower fronto-orbital bristles ; bristles black ; scutellar 

 pattern well defined. 



6 (7). Scutellum yellow, with a black apical spot , . . . scutellarius, n. 



7 (6). Scutellum black, with a small yellow spot on each side at base 



biguttatus, n, 



8 (1). Four scutellar bristles. 



9 (12). Two pairs of lower fronto-orbital bristles. 



10 (11). Scutellum black, with two broad yellow spots ; wings without brown 

 markings . . . . . . . . . . . . . , . . hipustulatus, Bezzi. 



1 1 (10). Scutellum yellow, with a black spot at the end ; wings with a brown fore 

 border, which is not dilated at the end . . . , . . . . scutellinus, n. 



12 (9). Three pairs of lower fronto-orbital bristles. 



13 (14). Wings with an isolated brown spot at the end of the third longitudinal 

 vein ; mainly black species, with black ovipositor and less developed middle yellow 

 stripe on thorax . . . . . . . . . . . . . . scutellaris, Bezzi. 



14 (13). The spot at end of the third vein is united with the brown fore border ; 

 ovipositor yellow. 



