Lonsdale: Australian Heteromeringia flies (Clusiidae) 
235 
-Hind and (usually) mid femora with wide dark brown medial 
bands. Male: frons dark brown around bases of reclinate orbital 
bristles; fore tibia partly brown; if tarsi yellow with distal segments 
somewhat darker, epandrium very large and bulbous; terminalia 
not as above. Female (unknown for H. magnicauda): fore tarsi 
not modified as above; fore femur dark brown on distal Vfc-%; 
tergite 8 wrapping around segment posterolaterally and sternite 8 
strongly tapered apically; spermathecae smooth excluding shallow 
basal wrinkles (Fig. 99) . 8 
8 Fore tarsi dark brown. Fore tibia yellow with inner-distal margin 
brownish. Epandrium much narrower than pregenitalic segments 
(Fig. 47). Surstylus small and rounded. Distiphallus with complex 
distal sclerite. Hypandrium+pregonite as in Fig. 49. H. laticornis D.K. McAlpine 
-Fore tarsi yellow with distal segments brownish or entirely brown. 
Fore tibia brown, sometimes with apex lighter. Epandrium very 
large and bulbous (Fig. 54). Surstylus longer than wide and 
triangular. Distiphallus bifid apically, without apical sclerites, 
and with medial “wings” (Fig. 56). Hypandrium+pregonite 
as in Fig. 57. H. magnicauda n.sp. 
9 Two fronto-orbital bristles. Wing dark anterodistally, as well as 
around and between R 4+5 and M, to r-m; dusky around dm-cu. 
Antenna sometimes entirely dark brown . H. bisetosa n.sp. 
-Three fronto-orbital bristles. Wing various, but not as above. An¬ 
tenna always yellow, at least in part . 10 
10 Three dorsocentral bristles. Legs predominantly brown with tibiae 
paler (hind tibia sometimes with two dark bands) . H. trisetosa n.sp. 
-Two dorsocentral bristles, sometimes with one relatively well 
developed setula in front of anterior bristle. Mid and hind tibiae and 
femora usually entirely or predominantly yellow ( H . imitans some¬ 
times with dark legs). 11 
11 Wing with dark, distinct, anterodistal bar along distal half of costa 
connecting (or nearly connecting) distal and medial bands (Figs 
7, 8); additional transverse band usually present at wing base 
(Fig. 5) . 12 
-Wing clear, dusky, or infuscated anterodistally; if cross veins sur¬ 
rounded by spot, then widely separated from distal spot (Fig. 6). 13 
12 Body length 4.1-4.5 mm. Wing with two bands (medial band 
sometimes appearing to fade into dusky basal region). Male 
somet im es with grey or beige colouration on scutum (Fig. 22). 
Palpus usually brown at base or apex. Male anepistemal disc at least 
seven times width of anepistemal bristle. Fore tibia entirely dark 
brown. Hind femur brown apically. Surstylus relatively broad— 
length not more than three times width at midpoint (Fig. 24). Phallus 
relatively straight (single lateral lobe present at midpoint), smooth, 
and with small, thin reticulated membrane at apex. Subterminal 
flagellum of ventral receptacle straight. H. australiae Malloch 
-Body length 2.8-3.5 mm. Wing with three distinct bands (fourth 
basal band near alar base sometimes indistinct). Male scutum 
entirely brown excluding variable yellow posterolateral tint. Palpus 
entirely yellow. Male anepistemal disc not more than four to five 
times width of anepistemal bristle. Fore tibia dark brown (some 
females) or pale with apex brown (all males and some females). 
Hind femur entirely yellow. Surstylus relatively thin—length at 
least four times width at midpoint (Fig. 73, 78). Phallus strikingly 
branched at midpoint, covered with minute spicules from midpoint 
to base and without thin reticulated membrane at apex (Fig. 75); 
sometimes with “phallic blade” (Fig. 77). Subterminal flagellum 
slightly to strongly coiled (Fig. 106) 
H. spinulosa D.K. McAlpine 
