118 
(Perkins) have definite prescutellar bristles in 
varying stages of development. Many speci- 
mens of this species which have the characters 
of Afrodacus have been studied. The typical 
forms fall into Daculus. 
GENOTYPE: Afrodacus higuttulus (Bezzi) 
KEY TO KNOWN SPECIES OF Dacus {Afrodacus) 
OF THE PACIFIC REGION 
1. Wings with infuscations along either 
the r-m or the m cross veins ...... 2 
Wings without infuscations on the 
crossveins 3 
2. Posterior two-thirds of the scutellum 
brown; r-m crossvein infuscated; 
indistinct facial spots present (Aus- 
tralia) .... hrunneus (Perkins and May) 
Scutellum yellow, except for a narrow 
basal band of black; m cross vein 
infuscated, r-m hyaline; face with a 
transverse black band (Java) ...... 
javanensis (Perkins) 
3. Humeri and notopleural calli not 
joined by a yellow band 4 
Humeri and notopleural calli joined 
by a broad yellow band; scutellum 
yellow, distinctly paler than the 
mesonotum jarvisi (Tryon) 3a 
3a. Halteres yellow; squamae and 
fringes white; the anterior noto- 
pleural bristles are located with- 
in the confines of the yellow 
band connecting the humeri 
and notopleural calli ......... 
jarvisi jarvisi (Tryon) 
Halteres reddish-brown; squamae 
and fringes yellow; anterior 
notopleural bristles on a 
reddish-brown ground color. . . 
. . . .jarvisi var. halteratus (Hendel) 
4. Mesonotum chiefly brownish-yellow, 
without black markings; scutellum 
brownish-yellow, darker on the 
sides; cubital streak narrow and 
faint; in the female ,vein Cui-|- 1st A 
from the apex of the cubital cell to 
the wing margin is about one and 
one-half times longer than the 
PACIFIC SCIENCE, Vol. V, April, 1951 
narrowed portion of the cubital cell 
(Samoa) aenigmatkus Malloch 
Mesonotum conspicuously marked 
with black (Fig. \d ) ; scutellum yel- 
low; cubital streak broad and dis- 
tinct; in the female, the section be- 
yond the apex of the cubital cell is 
shorter than the narrowed portion 
of the cell ............ aberrans n. sp. 
Dacus (Afrodacus) aberrans n. sp. 
Fig. la-c 
This species appears to be more closely re- 
lated to D. aenigmatkus Malloch than to any 
other known species. It is differentiated by 
the largely black mesonotum, by the more 
elongate cubital cell in the wing, by the ab- 
domen lacking black markings on the sides 
of segments 3 to 5, and by the scutellum 
being yellow, much paler in color than the 
mesonotum. 
MALE. A moderately small species pre- 
dominantly reddish in color except for the 
black median portion of the mesonotum. 
Head: Rufous except for the facial spots and 
the ocellar triangle. The head bristles are all 
black. There are two pairs of inferior fronto- 
orbitals. The front is nearly parallel sided, and 
it is one and one-half times longer than wide. 
There are no dark spots at the bases of the 
bristles and the tumescence is dark reddish, 
faintly discolored with a brownish hue. The 
facial spots are oval and are spaced about 
three-fourths of their length from the oral 
margin; the spots are about one-fourth as 
long as the face. The third antennal segment is 
slightly brownish, is three times longer than 
wide, and is just slightly longer than the face. 
Thorax: The hind portion of the mesonotum 
is extensively black. This black area extends 
laterally almost to the inner supra-alar bristles 
and anteriorly to a point opposite the position 
occupied in other subgenera by the anterior 
supra-alar bristles (Fig. \a). Beyond this point 
the black pattern breaks down into three 
vittae — one median and two sublateral — 
which extend to the front margin of the meso- 
notum. The sublateral black vittae are inter- 
