170 
third tergum appears to be complete on all 
mature specimens. 
This species seems to fit closest to D. arecae 
n. sp. It is distinguished by its larger size; 
all fulvous tibiae; elongate third costal section 
of the wing (Fig. 11^); by the much more 
elongate, strongly developed ovipositor (Fig. 
11 ^) and the trilobed piercer (Fig. 11 c). Per- 
kins’ description of the ovipositor was quite 
misleading; he said its proportions are as 
follows (measured from below, except for the 
fifth tergum): "length of basal segment: 
greatest width: apex of basal segment: length 
of 2 nd segment: median length of 5 th tergite. 
—40:24:9:29:20." It is obvious that Perkins’ 
measurements were made in situ with the in- 
version membrane (" 2 nd segment”) just part- 
ly extruded. We have relaxed the ovipositor. 
It is very elongate (Fig. 11 ^); when fully 
extended it measures about 9-46 mm. The 
Fig. 11. Dacus {Strumeta) froggatti (Bez 2 i). a, Wing; 
b, extended ovipositor; r, apex of piercer. 
PACIFIC SCIENCE, Vol. VIII, April, 1954 
piercer is approximately 3.17 mm. long by 
0.25 mm. wide at its widest point. The apex 
is trilobed (Eig. 11 c). Two pairs of moderately 
long and two pairs of short preapical setae 
are present; the distal pair is about 0.06 mm. 
from the apex of the piercer. The opening of 
the oviduct is situated about 0.23 mm. from 
the apex. The inversion membrane is about 
3.87 mm. long by 0.44 mm. wide at its widest 
point. The rasper extends to within 1.25 mm. 
of the base of the segment. The basal segment 
is 2.42 mm. long by 1.79 mm. wide measured 
across its hind margin. The spiracles are sit- 
uated 0.6 mm. from the anterior lateral mar- 
gins of the segment. 
The males have not previously been de- 
scribed; they fit the description of the female 
in most details. The following notes are sup- 
plemental to Perkins’ description. Head: The 
front is parallel sided, is about 1.5 times as 
long as wide and about 0.8 as wide as one 
eye. Thorax: The mesopleural stripe is rather 
broad, is slightly wider than the notopleural 
callus, and is continuous onto the upper por- 
tion of the sternopleuron. The dark markings 
on the mesonotum are usually indistinct or 
lacking, the top of the thorax is predominantly 
brownish red. Wings: As in Figure 11 ^. The 
costal and basal cells are distinctly yellow 
fumose. The costal band extends through 
much of cell R 3 but is yellow in this cell. The 
brown band is confined to the wing margin. 
Abdomen: Chiefly rufous or brownish red with 
a narrow brown to black band across the base 
of the third tergum. The narrow brown to 
black median vitta is variable; in some spec- 
imens it is well defined and extends over 
terga three to five; in others it is interrupted, 
or just a portion of it may be present on the 
fifth tergum. 
Length: Body, 8 . 0 - 10.0 mm.; wings, 7.5- 
8.5 mm. 
TYPE locality: Bainka, Russell Group, 
Solomon Islands. 
Lectotype (designated by Perkins) in col- 
lection of the Council for Scientific and In- 
dustrial Research, Canberra, Australia. 
