Studies in Fruit Flies. Part L Dacini — Hardy and Adachi 
187 
Fig. 23. Dacus {Zeugodacus) caudatusVdhnc'ms. a, Ex- 
tended ovipositor; b, apex of piercer; c, wing. 
mm. at its widest point. The oviduct opens 
about 0.15 mm. from the apex, and a median 
groove extends from the opening almost to 
the tip. The preapical setae are situated very 
close to the apex, within about 0.02 mm.; 
the two distal pairs of setae are large and 
extend well beyond the apex of the piercer; 
the two proximal pairs are tiny. The apex is 
broad and indistinctly trilobed (Fig. 23b). 
The inversion membrane (eighth segment) is 
about 2.2 mm. long by 0.42 mm. wide at its 
widest point; the rasper extends to within 1.1 
mm. of the base of the segment. The basal 
segment (segment seven) is about 1.53 mm. 
long by 1.35 mm. wide at its widest point. 
The spiracles are situated about 0.18 mm. 
from the anterior corners of the segment. 
Length: Body, 7.0-8. 5 mm.; wings, 6.5- 
7.5 mm. 
TYPE locality: Java. 
Type in the Zoologisk Museum, Copen- 
hagen. 
This species was not represented in the 
collections sent in by the collectors connected 
with the biological control of fruit flies pro- 
gram. We have examined specimens from Java 
(from the Zoologisches Museum der Uni- 
versitat Berlin) and a series of specimens 
submitted by the U. S. Department of Agri- 
culture which had been intercepted at Hobo- 
ken, N. Y., infesting seeds of Macrozanonia 
macrocarpa from Indonesia (J. M. Adams). 
Dacus (Zeugodacus) diaphoropsis 
(Hering), n. comb. 
Zeugodacus diaphoropsis Hering, 1952, Treubia 
21(2): 268-269, fig. 2. 
This species appears to be most closely 
related to D. hageni de Meijere and is dis- 
tinguished by having the costal band of uni- 
form width, not expanded at the apex. It has 
been adequately described by Hering, except 
for genital characters. 
Length: Wings, 6.4 mm. 
TYPE LOCALITY: Samarinda, Borneo. 
Type in the Leidener Museum. 
It is known only from the type male. 
Dacus (Zeugodacus) emittens Walker 
Fig. 24 
Dacus emittens Walker, I860, Linn. Soc. Lon- 
don, Proc. 4: 152. 
Dacus chrysotoxus Hendel, 1912, Suppl. Ent. 
1: 24. 
This species is related to D. caudatus Fabri- 
cius. It is distinguished by the greatly ex- 
panded costal band, filling all the apical 
fourth of cell M 2 , continuing as a transverse 
band across the m crossvein and also as a 
longitudinal mark along vein M3-1-4. Dr. K. 
L. Knight studied the specimens in the British 
Museum collection and informed us that 
there was no specimen labeled as type but 
that five specimens were present from the 
type locality, "data: Celebes nr. Macassar, 
