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PACIFIC SCIENCE, VoL V, April, 1951 
tion of cell R directly above cell M is very 
densely covered with micro trichia. In the 
outer portion of this area, just above vein M, 
the microtrichia appear to be longer and more 
dense. The cell is dark brown to black in this 
portion. The wing shows a very slight undu- 
lation at the apex of the vein Cui-}-lst A, but 
there is no developed lobe at this point. Vein 
Cui+lst A fades out before the wing margin. 
The distance from the apex of the cubital 
cell to the wing margin is slightly more than 
half the length of the narrowed portion of 
cell Cu. Abdomen: Chiefly yellow to rufous in 
the median portion of the dorsum and brown 
to blackish on the sides. The first tergum is 
almost entirely dark colored, with just a nar- 
row yellow apical margin. The second tergum 
has a broad dark-colored band across its base 
and the apical half is yellow to whitish. The 
third and fourth terga have a broad yellowish 
band extending longitudinally down the 
middle. This extends over the fifth tergum 
and expands laterally to cover all of that 
sclerite except for narrow black lateral mar- 
gins. The third tergum has a row of long 
black hairs on each side. 
Length: Body, 6.5 mm.; wings, 5.7 mm. 
FEMALE. Very similar to the male except for 
the sexual characters. The cubital streak is 
equally well developed but the longer, more 
closely arranged microtrichia are not present 
along vein Cui+lst A or in the 1st A cell. 
The narrowed portion of cell Cu is shorter 
than in the male. This portion is about one 
and one-third longer than the distance from 
the apex of cell Cu to the wing margin. Ovi- 
positor: Yellow-red and rather conspicuous. 
In the majority of specimens the extruded 
ovipositor {in situ) is equal in length to the 
last three abdominal segments (3-5). The 
basal portion (segment 7) is one and one- 
third longer than segment 5. The ovipositor 
is rather long and slender when relaxed and 
when extended (Eig. 8J) it measures ap- 
proximately 6.4 mm. The piercer measures 
about 2.1 mm. long by 0.18 mm. at its 
widest point. The apex of the oviduct is com- 
paratively near the tip of the ovipositor 
(0.15 mm.) and the piercer is gradually 
tapered beyond this point (Fig. 8^) . The four 
pairs of subapical setae are about 0.05 mm. 
from the apex of the piercer, about two times 
the length of the longest (distad) setae. The 
inversion membrane (segment 8) is about 
2.4 mm. long by 0.3 mm. wide at its broadest 
point. The rasper extends to about 1.0 mm. 
from the base of the segment. The basal seg- 
ment (seventh) is approximately 1.9 mm. 
long by 1.4 mm. wide, measured across the 
anterior margin. The spiracles are located 
about 0.5 mm. from the base of segment 7, 
measured on the lateral margins. 
Holotype male, allotype female, and 100 
paratypes (55 males and 45 females): Babinda, 
Queensland, Australia, Jan., 1950, ex Garcinia 
kajewskii. 
Holotype, allotype, and eight paratypes 
deposited in the United States National 
Museum. The remainder of the paratypes are 
being distributed among the following mu- 
seums and collections: Bishop Museum, 
Honolulu, T. H.; Australian Museum, Syd- 
ney; Board of Agriculture and Forestry, 
Honolulu, T. H.; Hawaiian Sugar Planters’ 
Association, Honolulu, T. H.; and the Uni- 
versity of Hawaii, Honolulu, T. H. 
Dacus (Melanodacus) Perkins 
Melanodacus Perkins 1937. Roy. Soc. Queens- 
land, Proc. 48(9): 57. 
This subgenus is in the Zeugodacus complex 
because of the presence of four scutellar 
bristles. It differs from Zeugodacus by having 
no cilia on the third tergum of the male. It is 
closely related to Paratridacus Shiraki and is 
separated by the presence of a supernumerary 
lobe in the male wing. 
Only a single species is known from 
Australia. 
genotype: Dacus niger Tryon. 
