234 
Records of the Australian Museum (2009) Vol. 61 
Key to the Australian Heteromeringia 
1 Thorax yellow with brown stripes. Wing lightly clouded . 2 
-Thorax dark brown, but, if dark with lighter stripes ( H. australiae ), 
wing banded (Figs 7, 8) . 5 
2 Scutum with single central floating stripe. Fore tibia yellow. Frons 
evenly orange medially. Bristles black. H. limacens n.sp. 
-Scutum with one pair of stripes that often join anteriorly and 
continue onto sides of scutellum. Fore tibia brown, at least laterally. 
Frons with black medial tint (darkest laterally). Bristles brown. 3 
3 Fore tarsi brown with distal two or three segments white. Anterior 
and posterior margins of fore tibia yellow to light brown. 
Pleuron yellow with thin, oblique subnotal stripe or thick black 
stripe touching notal margin. Tergites 1 and 2 brown. Surstylus 
pointed (Fig. 44) . H. hypoleuca D.K. McAlpine 
-Fore tarsi entirely brown. Fore tibia entirely dark brown. Pleuron 
with faint white or orange subnotal mottling. Tergites 1 and 2 
yellow. Surstylus rounded to truncated (Figs 38, 41) . 4 
4 Notal stripes broad, connecting anteriorly and attaining anterior 
margin of scutum. First flagellomere with inner-basal spot. Stripes 
on back of head reaching foramen. Surstylus widest at base 
(Fig. 38) . H. hypobrunnea n.sp. 
-Notal stripes very thin, separate and not extending past 
transverse suture. First flagellomere entirely pale. Stripes on 
back of head restricted to outer margins. Surstylus widest at apex 
(Fig. 41) . H. digitula n.sp. 
5 Hairs of arista much longer than width of central filament. 
Katepisternum yellow below anepisternal suture. Surstylus 
wrinkled (Fig. 69). Wing clear. H. ptenopa n.sp. 
-Hairs of arista approximately as long as width of central filament 
at base. Katepisternum entirely brown, sometimes excluding 
ventral margin ( H . asteia ). Surstylus smooth. Wing at least 
infuscated anterodistally . 6 
6 Vibrissae short and straight—barely overlapping if folded 
towards each other. Length of gena no more than twice height 
(Figs 3, 4). First flagellomere lobate ventrally and recessed 
dorsally (sometimes indistinct), with arista relatively close to 
pedicel. Wing with anterodistal infuscation and sometimes 
with cloud around dm-cu, but never banded. 7 
-Vibrissae long and usually curved upwards—widely overlapping 
if folded inwards (relatively short in H. norrisi). Length of gena 
at least three to four times height (Figs 1, 2). First flagellomere 
bilaterally symmetrical dorsoventrally; arista not near pedicel. Wing 
variable, sometimes with pronounced spots or bands. 9 
7 Mid and hind femora yellow, somet im es with brownish spot on 
apex of hind femur, or pale brownish band medially on male 
mid femur. Male: frons yellowish around bases of reclinate 
orbital bristles; fore tibia brown; fore tarsi yellow with distal 
two tarsomeres brownish; epandrium not wider than pregenitalic 
segments and mid and hind femora yellow; sides of epandrium 
excavated to reveal prominent hypandrium+pregonite (Fig. 
32); apex of phallus terminating in two long filaments on one 
side (Fig. 34). Female: fore tarsi relatively high and flat (height 
strongly tapering past second segment); fore femur yellow with 
dark inner-distal spot; tergite 8 not produced posterolaterally; 
sternite 8 only slightly tapering apically; spermathecae with 
minute medial papillae (Fig. 93). H. hardyi D.K. McAlpine 
