xv, 3 Bezzi: Fruit Flies from the Philippines 417 



1. Bactrocera umbrosa Fabricius, 1805. 



Of this widely spread Oriental species, which I have selected 

 as the type of the genus Bactrocera sensu stricto, there are spec- 

 imens from the following localities: Luzon, Laguna Province, 

 Mount Maquiling (C. F. Baker). Mindanao, Butuan and Da- 

 vao (Baker). 



The species has been described several times under different 

 names, of which Dacus fascipennis Wiedemann, 1819, from Java ; 

 Bactrocera fasciatipennis Doleschall, 1856, from Java; and Stru- 

 meta conformis Walker, 1857, from Singapore, are commonly 

 considered as synonyms ; but even Dacus frenchi Froggatt, 1909, 

 from New Caledonia and Australia, is certainly the same species, 

 in as much as Froggatt u records later that it was bred in Java 

 from fruits of Artocarpus integrifolia by Roepke. 



Another question is that concerning the original Bactrocera 

 longicomis of Guerin-Meneville (1830) 1838; in 1835 Macquart 

 gave a figure of the wing that is very different from the wing 

 of umbrosa, showing the two middle dark bands confluent toward 

 the hind border of the wing; moreover, the scutellum is described 

 as having a black spot above in the middle. 



IT. Genus CHAETODACUS Bezzi, 1913 



The rather numerous Philippine species of Chaetodacus can 

 be distinguished as follows: 



a\ Third and fourth abdominal segments entirely black or each with a 



complete and broad, transverse black band; no middle longitudinal 



black stripe on these segments; oval patches of last segment black; 



occiput black, with a narrow yellow border; species of smaller size. 



b 1 . No prescutellar bristles; third abdominal segment of male not ciliated. 



c\ Abdomen reddish, with three complete black crossbands; black 



oval patches of last segment very striking, contrasting with the 



reddish color of the surrounding parts. 



cP. Frons black-spotted; face of male entirely black; face of female 



with three black spots, the upper one placed just below root 



of antennae of smaller size C. atrichus sp. nov. 



<f. Frons unspotted; face of female with the two lower black spots 



alone; of greater size C. davaoanus var. nov. 



c 2 . Abdomen entirely black, even the black oval patches of the last 

 segment being indistinguishable. 

 e 1 . A well-developed black crossband at vertex; face in both 

 sexes with a broad black band on lower half. 



C. ablepharus sp. nov. 



e 2 . Black vertical band less distinct or even wanting; face of 



female with two black spots C. mindanaus var. nov. 



11 Proc. Linn. Soc. N. S. W. 35 (1910) 866. 



