142 
PACIFIC SCIENCE, Vol. V, April, 1951 
Twenty specimens are in the Krauss col- 
lection from Cairns, Queensland, ex Gar- 
cinia xanthochymus, Aug.-Nov., 1949. 
This species is apparently widely dis- 
tributed. I have studied numerous specimens 
from Japan, the Philippine Islands, Ceylon, 
and India. 
Dacus (Strumeta) Walker 
Strumeta Walker 1856. Linn. Soc. Lond., 
Proc. 1: 33. 
Dasyneura Saunders 1841. Ent. Soc. Lond., 
Trans. 3: 60 (nec Rondani, 1840). 
Chaetodacus Bezzi 1913. Ind. Mus. Mem. 
3: 93. 
Dacus {Marquesadacus) Malloch 1932. B. P. 
Bishop Mus. Bui. 98: 145. 
The subgenus Strumeta contains the great- 
est number of species of any of the Australian 
or Pacific Dacinae. There are 17 species^ 
and 3 varieties now known from Australia. 
All of these were represented in the Krauss 
collection except D. bancrofti (Tryon) and 
D. strigatus (Perkins). The members of this 
subgenus are characterized by having two 
scutellar bristles, a pair of prescutellars, and 
a pair of anterior supra-alars; by having the 
supernumerary lobe developed in the male 
wing; and by having a row of cilia on each 
side of the third tergum of the male. 
GENOTYPE: Dacus umbrosus Fabricius. 
KEY TO KNOWN SPECIES OF 
Dacus {Strumeta) from Australia 
1. Wings with one or more transverse 
markings; at least the r-m cross- 
vein infuscated 19 
Wings marked only with the costal 
band and the cubital streak 2 
2. Scutellum yellow except for a narrow 
basal margin 4 
^"Bactrocera longicornis Guer.” cannot be recognized 
from the original description and is not included in 
this list. Some writers have considered it a synonym of 
D. umbrosus Fab. 
Scutellum with a large brown spot 
covering most of the disc or the 
apex 3 
3. The brown spot on the scutellum ex- 
tends from the base over most of 
the disc, margin pale; fifth abdom- 
inal segment with a large brown 
to black spot on each side; mesono- 
tum brownish with no black mark- 
ings halfordiae (Tryon) 
The brown spot covers just the apex 
of the scutellum; abdomen entirely 
orange, no brown to black mark- 
ings ; mesonotum extensively 
marked with black . . . bancrofti (Tryon) 
4. Costal band broad, extending to or 
slightly below vein R4+5, filling all 
of cell R3; female ovipositor as in 
Figures l^a and 13^ . . . bryoniae (Tryon) 
Costal band narrower, extending 
scarcely, if at all, below vein R3 ex- 
cept at the wing margin; ovipositor 
not as above 5 
5. The first two costal cells are covered 
with microtrichia except in the basal 
half of the first cell; these cells are 
yellow-brown-fumose, concolorous 
with the costal band 
{tryoni complex) 6 
First two costal cells devoid of micro- 
trichia except in the apex of the 
second section and rarely a narrow 
row along top margin of the first; 
these cells are usually hyaline, dis- 
tinctly paler than the costal band . 9 
6. Humeri concolorous with the noto- 
pleural calli and the postsutural 
yellow stripes 7 
Humeri discolored, faintly to distinct- 
ly brownish; not concolorous with 
the yellow markings of the meso- 
notum . tryoni var. neohumeralis n. name 
7. Mesonotum without black markings, 
except sometimes a pair of small 
black marks near the anterior mar- 
gin . tryoni tryoni (Froggatt) 
Mesonotum with black vittae, or ex- 
tensively marked with black 8 
8. Predominantly brown to black, melan- 
istic forms, thorax and abdomen 
