Studies in Fruit Flies. Part 1. Dacini — Hardy and Adachi 
159 
to vein M1+2. Two pairs of inferior fronto- 
orbital bristles present. (Flores) 
persignatus (Hering) 
The r~m cross vein clear or very faintly 
infuscated. Costal band expanded into 
a large apical spot, extending only about 
halfway through cell R5. Three pairs of 
inferior fronto- orbital bristles present. .6 
6. Face with a transverse band of black. 
(Java) transtillum (Hering) 
Face with the usual black spots in an- 
tennal furrows. (Widespread) 
cucurbitae Coquillett 
7. Mesonotum with no postsutural yellow 
vittae 8 
Mesonotum with yellow vittae 9 
8. Costal band greatly expanded into a large 
brown spot which fills apical fourth of 
the wing. Face with a transverse band of 
black across middle. (China, Indonesia) 
hochii (Zia) 
Costal band not enlarged. Face with the 
usual black spots. (Java) 
obscuratus de Meijere 
9. Mesonotum with 3 postsutural yellow 
vittae. Wings with a large apical spot. 
(Java) apicalis de Meijere 
Mesonotum with 2 postsutural yellow 
vittae 10 
10. Face with a black transverse band. (For- 
mosa, Borneo, Malaya) . . . cilifer Hendel 
Face without such a band 11 
11. Face with the usual black spots in an- 
tennal furrows or entirely brown to 
blackish 12 
Face entirely yellow .13 
12. Humeri and postalar calli joined by a 
broad yellow band. Costal band extends 
to vein Mi-f2 and expanded in wing apex. 
(Philippine Islands) . continuus (Bezzi) 
Humeri and postalar calli not joined by 
a yellow band. Costal band not extending 
to vein M1+2 14 
13. Mesonotum chiefly or entirely rufous 
with yellow marks. Costal band extend- 
ing to vein Mi-1-2. Wings of males with 
a peculiar bulla developed above cubital 
vein (Fig. 16^/). (Philippine Islands and 
Malaya) mcgregori (Bezzi) 
Mesonotum black except for yellow 
markings. Wings probably not as above. 
(Java) impunctatus de Meijere 
14. Costal band very broad, extending along 
top edge of vein R4+5 filling all or almost 
all of cell R3 15 
Costal band scarcely, if at all, extending 
into cell R3, except at wing apex ... 16 
15. Face brown to black, obscuring spots in 
antennal furrows, front and middle fem- 
ora and abdomen blackish. (Malaya) . . . 
nigrotibialis var. lata (Perkins) 
Face, all femora, and abdomen chiefly 
yellow to rufous. (Philippine Islands). . 
limbiferus (Bezzi) 
16. Front and middle femora chiefly or en- 
tirely yellow. Postsutural yellow vittae on 
mesonotum extending to or beyond in- 
ner supraalar bristles. Shining areas on 
fifth tergum rufous 19 
Front and middle femora chiefly brown 
to black. Postsutural yellow vittae ending 
in front of inner supraalar bristles. Shin- 
ing areas on fifth tergum black 17 
17. Face largely yellow, with distinct black 
spots which extend to oral margin (Fig. 
15^). Abdomen marked with yellow at 
least on second tergum, and yellow vittae 
on mesonotum not strongly narrowed 
behind except in pectoralis Walker ..18 
Face brown to black, therefore the black 
spots in antennal furrows not clearly de- 
fined. Abdomen all black, and yellow 
