igi3.] M. Bezzi : Indian Trypaneids {Fruit-Flies). 93 



genus have four bristles on the scutellum, and some others have complete cross- 

 bands on the wings : these two characters are never present in the Ethiopian or in 

 the Palaearctic species. 



In the collection before me are no Indian species with complete cross-bands on 

 the wings; there is however a male of D. umbrosus, Fabricius, from Batavia, deter- 

 mined by Prof. Meijere. This species will probably be found in future in India, and 

 is easily distinguished from any other by its banded wings. 



I have already stated, that if the species with banded wings are considered as 

 generically distinct from the others, the name Bactrocera (type umhrosus, F.) will remain 

 theirs ; and for the species with unhanded wings will be used my new name Chaeioda- 

 cus (type ferrugineus , Fabr.). 



The species of Dacus which have been hitherto recorded from India and Ceylon 

 are the following: — ferrugineus, Fabricius, 1794 (as Musca) ; klugii , Wiedemann, 

 1830 ; zonatus, W. W. Saunders, 1841 {2iS Dasyneura) ; incisus, Walker, i860; squa- 

 lidus, Walker, i860 ; persicae, Bigot, 1890 (as Rivellia) ; mangiferae , Cotes, 1893 ; 

 Cucurbitae, Coquillett, 1899, and diver sus, Coquillett, 1904. Of these, persicae is the 

 same as zonatus , and squalidus probably the same as mangiferae, both being therefore 

 only a variety of ferrugineus ; of the remaining seven species klugii and incisus are 

 not represented in the collection, which however includes four more species, two of 

 them new. Klugii is very different from the other species in the pattern of the wings, 

 even from those of the group umbrosus ; perhaps it may not be a Dacine at all, but 

 a Trypaneine near the new genus Callistomyia. 



The Indian species in the collection can be distinguished as follows :— 



1 (10). Scutellum bearing only two bristles, the basal pair being wanting. 



2 (3). Face of the female with a black cross band, that of the male un- 



marked ; third abdominal segment of the male without the 



lateral row of bristles at hind margin. .. .. diversa, Coq. 



3 (2). Face in both sexes marked with two black spots; third abdo- 



minal segment of male ciliated. 



Hind cross-vein broadly margined with brown ; vt. black . . Cucurbitae, Coq. 



Hind cross- vein not bordered with brown ; vt. yellow. 



Wings with the brown costal border complete ; species of larger 

 size (5-8 mm.) 



Abdomen short and broad ; brown and yellow markings of the 



thorax well developed . . . . . . . . ferruginea, Fabr. 



Abdomen narrow and elongated ; markings of thorax less distinct ferruginea var. mangi- 

 ferae, Cotes. 



An isolated brown spot at the tip of wings ; size smaller (4-5 mm.) zonata, Saund. 



Scutellum with four bristles. 



Face in both sexes with a black cross band . . . . maculipennis, Dol. 



Face in both sexes marked with two black spots. 



Body narrow and elongated, of prevalent reddish colour ; scu- 

 tellum and ovipositor entirely reddish. 

 14 (15). Thorax on the back with distinct black markings; all the femora 

 entirely pale yellow ; third abdominal segment of the male 

 ciliated ., ,. .. ,, ,. caudata, Fabî. 



4 



(5)- 



5 



(4)- 



6 



(9)- 



7 



(8). 



8 



(7)- 



9 



(6). 



10 



(I). 



II 



(12). 



12 



(II). 



13 



(16). 



