Australian Fruit Flies — HARDY 
171 
cell R5 nigriventris Malloch 
Abdomen marked with yellow or ruf- 
ous; mesonotum distinctly marked 
with black; if just a single hyaline in- 
cision is present on the costal margin, 
cell R5 has three hyaline spots 2 
2. With two hyaline incisions beyond 
vein R1+2; r-m cross vein situated at 
about the middle of cell 1st M2. . . . 
australina Hendel 
Just one hyaline incision on the costal 
margin; r-m crossvein situated at the 
apical two-thirds to three-fourths of 
cell 1st M2 3 
3. Mesonotum marked with black on the 
sides and the hind margin; cell R5 
with two hyaline spots beyond the 
r-m crossvein acidomorpha Hendel 
Mesonotum with four black longi- 
tudinal vittae; cell R5 with one spot 
beyond the r-m hicolor (Macquart) 
Acanthoneura australina Hendel 
Fig. 25 
Acanthoneura australina Hendel 1928. Ent. 
Mitteil. 17: 359. 
This species is separated from the related 
species by the characters given in the above 
key. The pattern of the wing coloring is 
especially characteristic. The following notes 
are based upon the female; the male has 
apparently not been described. 
Head: The front is rufous and is one and 
one- third times longer than wide; the width 
is almost equal to the eye width. The face 
is flat on the upper three-fourths and tume- 
scent below. The antennae are broken off in 
the specimen at hand. Thorax: Yellow on the 
sides, scutellum, and the greater portion of 
the dorsum; the lateral and posterior margins 
of the mesonotum are black. The mesonotum 
is subshining lightly pollinose. The metano- 
tum is chiefly black, faintly rufous in the 
middle. The dorsocentral bristles are placed 
distinctly behind the anterior supra-alars. 
The halteres are yellow. Legs: Entirely clear 
yellow. Wings: (Fig. 25.) The basal portion 
is chiefly brown. The first costal cell is 
brownish in the basal half to three-fourths 
and hyaline at the apex (to the h crossvein). 
The second costal cell is largely hyaline but is 
brown at its apex and base; the hyaline mark 
in the second costal cell extends across the 
wing as a wedge-shaped mark through cells 
R2 and R and connects, rather indistinctly, 
with the narrow hyaline streak in the base of 
cell M4, which bisects the r-m crossvein. 
The basal one-third of the subcostal cell is 
hyaline and the apical portion is brown. A 
wedge-shaped hyaline incision runs through 
the middle portion of cell R2 (where vein 
Ri+ 2 enters costa) and extends through three- 
fourths of cell R3. A second hyaline incision 
is situated just beyond the first, extending 
just to vein R3. Cell R5 has an oval hyaline 
mark just above the m crossvein and another 
before the r-m cross vein. Cell 1st M2 has a 
round hyaline spot in the middle near its 
apex and 2d M2 has a hyaline streak ex- 
tending obliquely from the wing margin 
three-fourths the distance through the middle 
Fig. 25. Acanthoneura australina Hendel: wing of female. 
