164 
PACIFIC SCIENCE, VoL V, April, 1951 
distance being just slightly more than the 
length of the plate bearing the setae or the 
lengths of the longest setae (Fig. 21c). The 
inversion membrane is about 2.0 mm. long 
by 0.32 mm. wide. The scales of the rasper 
are sharp-pointed and extend to within ap- 
proximately 0.9 mm. from the base of seg- 
ment 8. The basal segment is 1.6 mm. long 
and the spiracles are 0.27 mm. from the pos- 
terior lateral margins. 
TYPE LOCALITY: Cardwell, Queensland, ex 
Musa hanksii. 
Type in the Queensland Museum, 
Over 1,000 specimens are in the Krauss 
collection from the following localities: 
Cairns, Queensland, ex banana, Jan.-Feb., 
1950; Mossman Gorge, Queensland, ex Musa 
hanksii, Feb., 1950; near Deeral, Queensland, 
ex banana, June, 1949; near Kuranda, Queens- 
land, ex Musa hanksii, Sept., 1949; Mossman, 
Queensland, ex Musa hanksii, March, 1950; 
one specimen reared from guava, Cairns, 
Queensland, April, 1950; one specimen reared 
from Capparis lucida, Ellis Beach near Cairns, 
Jan., 1950; and two specimens from Cairns, 
ex papaya, Feb., 1950. 
Dacus (Strumeta ) pallidus 
(Perkins and May) 
Fig. 22a, b 
Strumeta pallidus Perkins and May 1949. Univ. 
of Queensland, Dept. Biol. 2(14): 10-12. 
A predominantly pale-colored species re- 
lated to D. harringtoniae (Tryon) . It is readily 
distinguished by the presence of a black vitta 
down the middle of abdominal terga 3 to 5 
and by the very striking differences in the 
ovipositors as shown in Figures 11^ and 22a. 
The species has been adequately described 
by Perkins and May, except for the genital 
characters. The following description points 
out the diagnostic characters. Head: The front 
is broad; it is slightly less than the width of 
one eye and about one and three-fourths 
times longer than wide. There are two pairs of 
inferior fronto-orbital bristles. One specimen 
in the series at hand has three bristles on one 
side and two on the other. The facial spots 
are oval and are sometimes pointed below. 
In a series of specimens from Iron Range 
about 50 per cent had no facial spots; they 
were evidently teneral. Thorax: Chiefly red- 
dish with the usual yellow markings, the 
sternopleura largely brown to black. There is 
also a small black spot behind the yellow 
coloration of the metapleura just in front of 
the halteres and a brown to blackish spot on 
some specimens on the hypopleura just above 
the hind coxae. In one specimen at hand a 
pair of dorsocentral bristles are distinctly 
developed; these are placed anterior in posi- 
tion to the prescutellars and are about half as 
long as the other thoracic bristles. Wings: 
The first two costal cells are hyaline and 
devoid of microtrichia except in the apical 
portion of the second. The costal band ex- 
tends under vein R3 through the dorsal half 
of cell R3. In the apical portion it extends over 
one-third the distance between the ends of 
veins R4+5 and M1+2. The cubital streak is 
more faintly yellow-brown than the costal 
band, and the yellowish coloring fades out at 
about the end of the cubital cell. In the female 
the narrowed portion of the cubital cell is 
equal to or slightly longer than the distance 
from the end of the cell to the wing margin. 
In the male this cell is distinctly more than 
two times longer than the distance to the 
margin. Abdomen: Chiefly reddish with a black 
vitta down the middle of terga 3 to 5 and a 
narrow brown to black basal band on the 
third tergum. This basal band broadens 
laterally and covers the side margins of this 
tergum. Ovipositor: Conspicuous and well de- 
veloped. The extruded portion (in pinned 
specimens) is about equal in length to the 
last three segments of the abdomen. The ex- 
tended ovipositor (Fig. 22a) measures about 
5.4 mm. The piercer (Fig. 22h) is 1.8 mm. 
long by 0.19 wide and is gradually tapered on 
the apical third. The apex of the oviduct is 
about 0.6 mm. from the apex of the piercer. 
The setae are well developed and are situated 
about 0.25 mm. from the apex of the piercer.. 
