Studies in Fruit Flies. Part L Dacini — Hardy AND Adachi 
183 
subsegments. Wings: The costal band is com- 
paratively broad and extends below vein R3 
along its entire length. The band is very 
slightly enlarged apically (Fig. 2\d). The r-m 
crossvein is slightly curved, about 0.75 as long 
as that section of M1+2 between the r-m and 
the m crossveins and distinctly longer than 
the basal section of vein M3-f-4 (Fig. 2\d). 
Abdomen: Yellow to rufous. It has a black 
band across the basal portion of segments two 
and three and a median black vitta extending 
longitudinally from the base of segment three 
to the apex of five. The sides of the abdomen 
are also somewhat blackened. Ovipositor: When 
fully extended (Fig. 2\h') it measures approx- 
imately 6.57 mm. The piercer measures about 
2.2 mm. by 0.23 mm. The apical portion is 
characteristically trilobate (Fig. 21c). The setae 
are small and inconspicuous; four equal-size 
setae are present, approximately 0.075 mm. 
from the apex of the piercer. The oviduct 
opens about 0.28 mm. from the apex. The 
inversion membrane measures approximately 
2.36 mm. by 0.36 mm. The rasper extends to 
within 1 mm. of the base of the segment. The 
basal segment of the ovipositor (segment 7) 
is 2 mm. by 1.45 mm. measured across its 
base. The spiracles are situated 0.42 mm. from 
the base measured on the lateral margins of 
the segment. 
Length: Body, 6. 5-7.0 mm.; wings, 6.0- 
6.5 mm. 
MALE. Fitting the description of the female 
in all respects except for the genital characters 
and the secondary sexual characters as given 
in the introduction above. 
Holotype female, allotype male, and 23 
paratypes (8 males and 15 females), from 
Tagap, North Borneo, 2,000 ft. elev., ex Gar- 
cinia sp..^, "Acab-bacob,” Jan., 1951 (F. E. 
Skinner); Singapore, Apr., 1949, ex Garcinia 
laueana (N. L. H. Krauss); Makiling, Philip- 
pine Islands, Feb., 1921, ex Sideroxylon (F. X. 
Williams) . 
The type, allotype, and a series of paratypes 
are being deposited in the U. S. National 
Museum collection. The remainder of the 
paratypes are in the following collections: 
Bernice P. Bishop Museum, Hawaiian Sugar 
Planters’ Association, British Museum (Nat- 
ural History), and the University of Hawaii. 
Dacus (Strumeta) tillyardi 
(Perkins), n. comb. 
Strumeta tillyardi Perkins, 1938, Roy. Soc. 
Queensland, Proc. 49(11): 131-132, fig. 6. 
This species is distinguished from all re- 
lated Strumeta by lacking postsutural yellow 
vittae. Perkins {pp. cit., p. 122) in his key to 
the species places this with mcgregori as having 
no markings on the wings except the costal 
band and the cubital streak. In his figure and 
in his description he indicates that both the 
r-m and the m crossveins are infuscated. His 
key is also misleading in that he keys both 
mcgregori and tillyardi as having the "scutellum 
not entirely yellow.” This would indicate to 
us that it probably has an apical black spot 
or a median discoloration. He was referring 
instead to the narrow band of black across 
the base of the scutellum. This character is 
of questionable value; almost all fully hard- 
ened specimens of Dacini possess this. 
Length: Body, 6.0-6. 5 mm.; wings, 5.0- 
5.5 mm. 
Known only from the female so there is 
some question as to its true subgeneric 
position. 
TYPE locality: Selangor, Malaya. 
Type probably in the Selangor Museum. 
We have not seen this species. A specimen 
is on hand (labeled "Ambon, 2-08,” probably 
collected by F. Muir) which fits near tillyardi. 
It probably is an undescribed species, but 
inasmuch as the specimen is teneral it is not 
being named at this time. The specimen is 
predominantly pale; the mesonotum is red- 
dish brown, and the abdomen is all rufous. 
The only transverse marking on the wing is 
a faint infuscation along the r-m cross vein. 
The costal band is faintly infuscated and does 
not extend beyond the tip of vein R4+5. 
