Sinclair: Hydropeza empidid flies of Australia 
13 
Hydropeza curvata sp. nov. 
Figs 8, 12 
Type material. Holotype $, labelled: “AUST: N.QLD:/ 
14.7km/ up Mt. Lewis Rd., 860m/ 22.iv. 1994, cascading/ 
creek, B. J. Sinclair/ 16°30'S 145 0 17'E”; “HOLOTYPE/ 
Hydropeza/ curvata/ Sinclair [red label]” (AMS). Paratypes: 
Queensland: 6$$ ? same data as holotype, 16, 22.iv. 1994 
(AMS, CNC); 1$, 14.7 km up Mt. Lewis Rd., 860 m, 
15-16.iv.1994, ypans, stream, 16°30'S 145°17'E, B. J. 
Sinclair (CNC); \$, 1$* 31.6 km up Mt. Lewis Rd., 1000 
m, 21.iv. 1994, cascading ck, 16°30’S 145°17'E, B. J. Sinclair 
(CNC). 
Diagnosis. This species is distinguished from other 
Queensland species by acrostichal setae extending to 
prescutellar depression; male scutellum with at most a pair 
of elongate discal setae; male mid femur with short row 
of basal posteroventral setae and mid tibia with short row 
of spine-like setae on apical third; male hind trochanter 
without spine-like anteroventral setae; and male cercus 
deeply forked, V-shaped. Females are distinguished 
from all other species by numerous marginal setae on the 
scutellum and acrostichal setae extending to the prescutellar 
depression. 
Description. Head and abdomen dark brown, thorax 
brown with paler patches; coxae brownish yellow, legs 
progressively darker towards tips. Wing length 3.2-3.6 mm. 
Male. Head. Ocellar setae very long, erect, divergent, 
inserted posterior to anterior ocellus; ocellar tubercle with 
some long setulae; postocellar seta stout and dark; upper 
postocular setae stout and dark, lower setae fine and slender; 
postgenal setae similar to lower postoculars. Face without 
setulae. Scape and pedicel slightly paler than postpedicel; 
scape short and slender, slightly shorter than length of 
globular pedicel; postpedicel not greatly prolonged, 2x 
longer than pedicel, basal portion elongate-oval, longer than 
slender, straight apical portion; arista-like stylus slightly 
longer than postpedicel, concolorous with postpedicel. 
Proboscis stout and robust, extended slightly beyond mid¬ 
length of fore coxa, directed posteriorly; palpus about 
half length of proboscis, clothed in long dark setae; apex 
of palpus rounded; apical third of palpus flattened with 
dense pubescence. 
Thorax. Clothed in fine pruinescence; mesonotum 
brown, with postpronotal lobe, lateral margin and postalar 
ridge pale brown; pleura paler than notum, pale along 
sutures. Setae generally long and stout; acrostichal setulae 
extending to prescutellar depression, less than 0.5x length 
of dc; pprn with 1 seta and several short setulae; 1 long 
presut spal; 5 uniserial dc, about subequal in length, with 
2-3 intermixed nearly subequal setae; 3 npl; 1 long psut 
spal and 1-2 finer setae; 1 pal seta; 1 pair of sctl, with 2 
pairs of finer outer marginal setae; disc of scutellum with 1 
pair of long setae. Antepronotum with pair of pale setulae. 
Legs. Coxae and femora ventrally yellowish-brown; 
remaining segments increasingly darker apically. Inner 
anterior margin of fore coxa with some 15 dark, variously 
lengthened and thickened spine-like setae, mostly concen¬ 
trated apically; basal most seta longer than width of coxa. 
Anterior surface of mid and hind coxae with long brown 
setae. Legs clothed in very long setae as typical for genus, 
especially ventral faces. Fore femur straight, inflated 
(narrower than hind femur), with row of 2 stout anterior 
setae at apical fifth; 5-6 posterodorsal setae, stouter towards 
apex. Fore tibia with 2 anteroventral setae on apical third; 
2 anterodorsal and 2 posterodorsal setae; 1 anterodorsal 
preapical seta. Foretarsomere 1 with 1 basal anteroventral 
and 1 preapical anterovental seta, more than 2x width of 
segment; 1 long basal ventral and 1 shorter ventral seta 
on basal third. Mid femur with 2-3 anterodorsal setae, 
1 anterior seta and 1 posterodorsal seta on apical third; 
basal half with row of 3-4 stout posteroventral setae; 
apex with 1 anterior, 1 dorsal and 1 posterior preapical 
seta. Mid tibia with width reduced on ventral apical third, 
with row of 7-8 short spine-like setae; apex with short, 
spur-like ventral seta; 1 anterodorsal and 1 posterodorsal 
seta near mid-length; 1 basal posterodorsal seta; apex with 
1 dorsal and 1 posterior seta. Mid tarsomere 1 with 1 long 
anteroventral basal seta. Hind femur inflated, nearly 2x 
broader than fore femur, without erect dorsal setae; with 
anteroventral row of stout setae along entire length; apical 
fourth with 2 anterodorsal, 1 anterior and 1 posterior seta. 
Hind trochanter without spine-like anteroventral setae. 
Hind tibia with 2 anterodorsal and 4-6 posterodorsal setae; 
1 preapical anterodorsal and 1 apical anteroventral seta; 
apical fourth with dense posterior setae. Hind tarsomere 1 
without erect setae. All tarsomeres longer than tibia; ventral 
apical margin of tarsomere 4 of fore and midlegs somewhat 
pale, flattened and expanded; tarsomere 4 of hindleg not 
laterally compressed ventrally; tarsomere 5 of each leg 
lacking dorsoapical extension. 
Wing. Infuscate with 1 long basal costal seta, longer than 
sctl; all veins lacking setulae; R 4 and R 5 distinctly divergent 
apically; bm-m complete; cell dm produced apically, 
subequal in length to cell bm; CuA + CuP reduced to faint 
streak. Halter pale brown. 
Abdomen. Tergites and sternites clothed in setae; setae 
of posterior margin overlapping more than half length of 
following tergite. T8 broad, one-third length of T7; posterior 
marginal setae slender, less than twice length of tergite. 
Terminalia (Fig. 12). Cercus elongate and lying along 
dorsal edge of epandrium, deeply forked, V-shaped; upper 
branch slightly twisted, arched medially with narrow apex; 
lower branch longer than length of upper with broadly 
rounded apex. Epandrium round, tapered apically. Surstylus 
thumb-shaped, apex rounded; apical margin with numerous 
long setae. Hypandrium keel-like, not extended beyond 
surstylus; apical margin truncate without medial notch; 
gonocoxal apodeme short, rounded; postgonite digitiform, 
divergent with sharply attenuated apex. Phallus broad, 
apically flattened and spoon-shaped; ejaculatory apodeme 
L-shaped, longer than gonocoxal apodeme. 
Female. Similar to male except as follows: scutellum with 
numerous marginal setae; mid femur lacking row of stout 
posteroventral basal setae; mid tibia not narrowed apically, 
lacking row of spine-like setae; hind femur not broader 
than mid femur, lacking anteroventral row of stout setae. 
Terminalia (not dissected): cercus slightly longer than 
epiproct, broad with rounded apex. 
Distribution. This species is recorded from above 800 m on 
Mt. Lewis, Queensland (Fig. 8). 
Etymology. The specific name is from the Latin curvatus 
(bend, bow, crook), in reference to slightly twisted upper 
branch of the male cercus. 
