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from the typical form by having the halteres 
reddish-brown with brown knobs, the squa- 
mae and their fringe yellow, and the anterior 
notopleural bristles situated on a reddish- 
brown ground color. The anterior notopleural 
bristles in typical jarvisi are located near the 
outer edge of the yellow band. There is ob- 
viously some variation in this character, and 
in many specimens the bristle will be placed 
just outside the confines of the yellow 
coloring. 
TYPE locality; Caims, Queensland. 
Type in the Deutsches Entomologisches 
Institut, Berlin. 
Dacus (Asiadacus) Perkins 
Asiadacus Perkins 1937. Roy. Soc. Queens- 
land, Proc. 48(9): 57. 
This subgenus was not represented in the 
Krauss collection from Australia but because 
one of the species, Dacus iGymnodacus) 
calophylli (Perkins and May), was recently de- 
scribed as an Asiadacus, a discussion of this 
group is pertinent to this paper. 
The group differs from Dacus {Strumeta) in 
lacking the cilia on the third tergum of the 
male. It is very close to Gymmdacus (see dis- 
cussion under Gymmdacus) and is separated 
only by the presence of a supernumerary lobe 
in the wings of the males. The subgenus is 
poorly defined, and it is questionable whether 
or not the presence or absence (or degree of 
development) of the supernumerary lobe has 
even subgeneric importance in this case. 
GENOTYPE: Chaetodacus hakeri Bezzi. 
KEY TO KNOWN SPECIES OF Asiadacus 
1. Wings with a very large apical spot 
which fills all of the apex and extends 
to vein Mi- 1 - 2 ; no median yellow 
stripe on the mesonotum (Philippine 
Islands) hakeri (Bezzi) 
Wings with no well- developed apical 
spot; mesonotum with a median yel- 
low stripe (Ceylon, India) 
diversus (Coquillett) 
Dacus (Austrodacus) Perkins 
Austrodacus Perkins 1937. Roy. Soc. Queens- 
land, Proc. 48: 56. 
The members of this subgenus are charac- 
terized by having four scutellar bristles and 
no prescutellar and anterior supra-alar bristles. 
The males have no cilia on the third abdomin- 
al tergum and no well- developed supernumer- 
ary lobe in the wings. The group is more dis- 
tinctively set off than are most of the sub- 
genera of Dacus, but there are some borderline 
characteristics present. In some specimens the 
mesonotal hairs, in the position where pre- 
scutellar bristles normally arise, are more 
strongly developed than the surrounding 
setae; they are erect, two to three times longer 
than the other setae, and they have the ap- 
pearance of being rudimentary prescutellar 
bristles. The secondary pair of scutellar 
bristles is sometimes comparatively weak and 
shows definite intergrading in size. The super- 
numerary lobe is partially developed in the 
male wing, occupying an intermediate posi- 
tion between those groups which have a well- 
developed lobe and those which have none. 
genotype: Dacus cucumis French. 
D. cucumis is the only known species in this 
subgenus. 
Dacus (Austrodacus ) cucumis French 
Fig. 'ia-d 
Dacus tryoni var. cucumis French 1907. Dept. 
Agr. Victoria, Jour. 5: 307. 
This species is easily recognized by the 
subgeneric characters listed above. It super- 
ficially resembles Dacus (Hemizeugodacus) 
algaiae n. sp. and Dacus (Daculus) signatifer 
Tryon. This resemblance is discussed under 
the description of the above-mentioned 
species. 
MALE. Entirely yellow to rufous except for 
the black facial spots and some dark markings 
on the abdomen. Head: Front nearly two 
times longer than wide and clear reddish- 
