taxonID	type	description	language	source
7F1787BFAE39FFD3575789A2AF81FC1F.taxon	materials_examined	Type species D. molens n. sp.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE39FFD3575789A2AF81FC1F.taxon	description	Description. Male (female unknown). Medium-sized dark flies of moderate to rather stout build with partly infuscated wing. Head. Parafacial broad; face deeply and extensively concave, so that median facial carina is not visible in profile; outer vertical bristle situated behind and below vertex; no other cephalic bristles differentiated from scattered fine setulae. Antenna of moderate proportions for Platystomatinae, with large, elongate segment 3; arista with minute pubescence less than 0.2 of its maximum diameter in length. Prelabrum reduced, flattened on ventral surface of head (perhaps sexually dimorphic). Thorax with only the following major bristles differentiated: long posterior notopleural, one small dorsocentral, apical scutellar. Legs of moderate length; femora not incrassate; fore femur (but not other femora) with spinescent posteroventral bristles. Wing: stem vein (base of R) setulose dorsally only beyond level of humeral crossvein; veins 3 and 4 not strongly convergent towards apex; anterior crossvein meeting vein 4 well beyond mid-length of discal cell; alula moderately large; squama (lower calypter) forming moderately short lobe, no larger than axillary lobe (upper calypter). Abdomen broadly ovate. Aedeagus of basic platystomatine structure, with pair of short terminal filaments.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE39FFD3575789A2AF81FC1F.taxon	distribution	Distribution New Caledonia: far north of Grande Terre. Notes The great reduction in chaetotaxy sets Dayomyia apart from most other platystomatid genera. The nearest approach to this condition is in Angitula Walker, but that genus and its probable sister-group Terzia McAlpine form a distinctive clade unlikely to be closely related to Dayomyia. Dayomyia is distinguished from Angitula s. l. by the robust habitus and relatively stout legs, by the short, unmodified prothorax, the extensive covering of many short setulae on the mesoscutum, the absence of the metathoracic postcoxal bridge, and the large alula. The resemblance in chaetotaxy is due to convergence. The wing venation of Dayomyia shows points of resemblance to Brea Walker and Pseudorichardia Hendel, particularly in the unusually long second basal and anal cells, and there is some resemblance in general features of wing pattern. The course of the subcosta distally is more like that of Brea, but I am unable to find enough distinctive character states on which to base a hypothesis of close relationship. Several features of Dayomyia suggest relationship to Rhytidortalis Hendel and through this genus to possibly related genera such as Microepicausta Hendel and Scotinosoma Loew. In the antenna, the strong armature of setulae on the dorsomedial surface of segment 2, and the bulky segment 3 with dorsal convexity basad of the insertion of the arista are reminiscent of males of Rhytidortalis averni McAlpine and some other Rhytidortalis species (see McAlpine, 2000). These characters are all subject to sexual dimorphism in at least some Rhytidortalis species, but female conditions in Dayomyia are unknown. The extent of the basal swelling of antennal segment 6 in Dayomyia is more like that of Rhytidortalis than that of Brea and Pseudorichardia, as is the minute decumbent pubescence towards the base of that segment. The males of R. averni and to some extent those of other Rhytidortalis species have the prelabrum reduced in depth and its anterior surface receding, a condition approaching that of D. molens. The males of Brea and Pseudorichardia do not have the prelabrum thus reduced. The aedeagus of Dayomyia resembles that of Rhytidortalis, but is of such a generalized type for the Platystomatinae that no particular synapomorphy can be inferred. Dayomyia shows substantial difference from Rhytidortalis in venation, chaetotaxy, and facial structure, but these differences mostly involve autapomorphies for the former. From these observations I put forward the hypothesis of closer relationship of Dayomyia to Rhytidortalis and related genera than to other (or most other) platystomatine genera, but this view cannot, without further knowledge, be based on well supported synapomorphies, uniquely derived within the Platystomatinae. The generic name refers to Barry James Day who, over many years, has made significant collections of Diptera, including many new taxa, for the Australian Museum. Most recently these have included New Caledonian platystomatids. The generic name is treated as a feminine noun in the nominative case.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE39FFD555D98D1FAE7FFC33.taxon	description	Figs 1 – 4 Types. HOLOTYPE?, New Caledonia: 1 km SW of Mandjelia, 750 m, 20 ° 24 ' S 164 ° 32 ' E, 5. i. 2005, G. B. M, MV light, rainforest (PM). PARATYPE?, Mandjelia — lower creek, 580 m, 20 ° 24 ' S 164 ° 31 ' E, 4. i. 2005, G. B. M. (QM). Description. Male. Coloration. Head predominantly tawny-brown; cuticle largely pruinescent or finely sculptured and not shining; parafacial with zone of coarser, dense whitish pruinescence next to eye; face densely white-pruinescent except along summit of median carina and on lower margin; postgenal region and part of occiput with coarse greyish pruinescence. Antenna orange-tawny. Thorax black, largely shining; mesoscutum with small lateral marginal zone of yellowishgrey pruinescence both before and behind notopleural bristle, former extending mesad of humeral callus; posterior parts of pleura and much of postscutellum greyish-pruinescent. Legs largely black to brown-black; apices of all femora and bases of all tibiae narrowly tawny. Wing with brown markings partly diffuse as in Fig. 4; much of membrane on central and basal part of wing suffused with yellow; axillary lobe and squama creamy-white. Halter yellow. Abdomen black; tergites largely shining and with bluish reflections, except for a transverse stripe of grey-brown pruinescence near junction of tergites 1 and 2; sternite 1 largely glossy blackish, with grey-pruinescent zone on each lateral margin. Head as wide as mesoscutum and c. 1.3 × as wide as high; postfrons narrowest near vertex, where its width is c. 0.4 that of head, rather sparsely finely setulose; parafacial without setulae except towards upper and lower extremities; frontal lunule shortly exposed, with few fine setulae; facial carina extending for almost full height of face, very narrow, but slightly dilated at lower extremity; cheek almost half as high as eye; occiput flattened on c. upper third, strongly swollen on rest of extent except for central depression containing occipital foramen. Antenna: segment 1 short, but prominent in profile; segment 2 moderately short, with many setulae, including field of numerous short, stout setulae (often damaged) on medial surface; segment 3 almost as long as face; arista apparently slightly shorter than segment 3, perhaps slightly damaged apically in all examples; segment 4 visible but extremely reduced; segment 5 separated from segment 6 by membranous ring; segment 6 swollen on basal part, with very inconspicuous pubescence. Palpus of moderate proportions, compressed, setulose; proboscis moderately short and stout; prementum broader than long, with distal margin almost straight. Thorax stout; mesoscutum almost as broad as long, with many non-seriate setulae; humeral callus with numerous setulae; scutellum rather short, convex, subtriangular but rounded apically; subscutellum small and recessed; mesopleuron, pteropleuron, and sternopleuron finely setulose; prosternum broad, with short setulae and rudimentary precoxal bridge; metapleural sclerite extending narrowly between hind coxa and abdominal segment 1, but not forming postcoxal bridge. Legs without differentiated bristles, except for the posteroventral series of fore femur; posterior bridge of hind coxa without setulae; mid tibia with one rather short stout apical ventral spur and several stout setulae on each side of it. Wing: venation as in Fig. 4; subcosta not fading distally, meeting costa at acute angle; cell- 4 index = 0.76 – 0.81; membrane, including that of alula, largely microtrichose; pale basal areas of first basal, second basal and anal cells, and zone behind mid-length of anal cell almost bare; squama of moderate size, slightly broader than a semicircle. Abdomen. Tergites 2 to 5 with numerous, generally distributed small setulae; tergite 2 showing narrow membranous zone along much of posterior margin except at sides; tergite 5 almost as long as tergite 4, without enlarged setulae; at least sternites 1 and 2 with fine setulae. Postabdomen: aedeagus with small terminal tuft of pubescence on stipe; preglans well differentiated from stipe, short, asymmetrical; glans ovoid-cylindrical; bulb short, inconspicuous; paired terminal filaments broadly fused basally, each much shorter than glans. Dimensions. Total length (abdomen variably flexed) 5.5 – 7.1 mm; length of thorax 2.7 mm; length of wing 5.9 – 6.1 mm; length of glans of aedeagus 0.25 mm. Notes The male of D. molens has a field of short, strong setulae on the dorsomedial surface of antennal segment 2. In both the available specimens there is damage to these setulae which is very unlikely to be the result of collecting or subsequent handling, because this surface of the antennae is less freely exposed than other parts. On the holotype at least eight of these setulae on the right antenna have been snapped off or ground off at or just beyond their bases, while on the left antenna five setulae are similarly damaged. In the paratype about 28 setulae on the right antenna and 26 on the left are damaged, i. e. most of the setulae on this part of the segment. On each antenna the setulae on the rest of the surface of segment 2 are intact. I have commented on damage to setulae, which appear to be a specialized development on the medial surface of antennal segment 2, in the canacid (or tethinid) Tethinosoma fulvifrons Malloch and the platystomatid Rhytidortalis averni McAlpine (McAlpine, 2007 [this volume]). I hypothesized that, in these flies of sandy (beach or dune) habitats, the antennae may play a role in digging or extrication from loose sand. I have no information to suggest that any such activity is likely for Dayomyia, but the data seem to indicate that some unknown activity of the fly involves abrasion of these setulae. The specific epithet is a Latin participle, grinding, in reference to the abraded antennal setulae.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3FFFD555C089A2AF2FFDC9.taxon	distribution	Distribution Australia: Queensland. New Guinea. Bismarck Archipelago: Lavongai (or New Hanover). New Caledonia: Grande Terre. Notes In my previous treatment of Eumeka (McAlpine 2001: table 1) I gave the principal diagnostic characters of the only known New Caledonian species, now described as E. koghii.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3FFFD655CE8B6CA847F859.taxon	description	Fig. 5	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3FFFD655CE8B6CA847F859.taxon	materials_examined	Type. HOLOTYPE! (unique), New Caledonia: Mount Koghi [or Montagnes des Koghis], 600 m, 26 – 30. i. 1963, C. Y., N. L. K., light trap (BPB).	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3FFFD655CE8B6CA847F859.taxon	description	Description. Female (male unknown). Resembling E. hendeli McAlpine (see McAlpine, 2001) but smaller. Coloration. Head with ground-colour largely brown; cheek and lower occiput brownish-tawny; fronto-orbital margin, parafacial, and postgenal region densely silvery-pruinescent; antennal groove more finely and thinly silvery-pruinescent. Palpus brown to tawny-brown. Mesoscutum with blackish ground-colour, becoming brown towards lateral margins, with median silver-grey pruinescent stripe joined to transverse prescutellar pruinescent zone, and with broader lateral pruinescent zone both before and behind transverse suture; humeral callus whitish-pruinescent only towards posterior margin, otherwise shining brown with pale yellowish hairs; scutellum shining blackish, with anterodorsal zone of thin greyish pruinescence; pleura brown and shining in part; mesopleuron with silvery-pruinescent posterior marginal band narrowed dorsally, ventrally extending broadly across sternopleuron; pleurotergite with silvery-white pubescence-pruinescence. Coxae brown to tawny; fore coxa densely silvery-pruinescent on anterior surface; femora yellow; tibiae and tarsi dark brown to tawnybrown. Wing (Fig. 5) differing from other Eumeka spp. in broader brown costal band between veins 1 and 4 and large brown mark enclosing both anterior and discal crossveins; axillary lobe and squama white. Halter with tawny-yellow base and brown capitellum. Abdomen dark brown to tawny brown, largely shining with whitish hairs on tergites 1 and 2, mostly blackish hairs on other tergites; tergite 2 with rather small median whitish-pruinescent zone on posterior margin; tergite 3 with whitish-pruinescent zone on anterior margin which does not extend to lateral margin; tergite 4 with whitish-pruinescent zone on anterior margin, which broadens laterally and extends broadly over whole lateral margin; tergite 5 broadly whitish-pruinescent on lateral margin only; sternite 1 brown, shining, whitish-pruinescent on lateral margin and more narrowly so on posterior margin; sternites 2 and 3 almost entirely whitish-pruinescent; ovipositor sheath dark brown; aculeus yellow. Head of similar shape and proportions to that of E. hendeli; facial carina almost flat-topped, depressed near mid-length so that central part is not visible in profile; height of cheek 0.28 of height of eye; fronto-orbital bristles two, reclinate, but posterior one strongly curved outwards; postgenal bristle large; setulae present on parafacial, but those near and just above its mid-height smaller and inconspicuous. Antenna (without arista) slightly shorter than face; arista almost twice as long as rest of antenna; segment 6 with sparse very minute pubescence near base only. Prelabrum moderately developed; its anterior surface almost vertical. Thorax. Setulae on mesopleuron (perhaps sexually dimorphic) shorter than in either sex of E. hendeli, those near posterior margin moderately short, black, moderately thick, those on upper part fine, minute, and pale, those in compact ventral group black, thick and somewhat spinescent; setulae on anterior part of pteropleuron short, rather thick, black; thoracic chaetotaxy as for genus. Legs as for genus; bristles on hind femur rather weak, especially the pale anterior ones on basal half. Wing: vein 1 without ventral setulae; distal section of vein 4 slightly arched, apically slightly diverging from vein 3; cell- 4 index = 0.76; first basal cell more extensively microtrichose than in other Eumeka species, particularly on distal half; alula entirely microtrichose; squama rather narrowly rounded, not at all produced posteriorly (in contrast to E. hendeli). Abdomen rather broad anteriorly, with no tendency towards petiolation; tergite 5 distinctly shorter than tergite 4; aculeus very slender; spiracle 5 apparently situated in pleural membrane below mid-length of tergite 5. Dimensions. Total length 5.4 mm (abdomen flexed); length of thorax 2.7 mm; length of wing 6.1 mm.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3FFFD655CE8B6CA847F859.taxon	distribution	Distribution New Caledonia: mountains in south of Grande Terre. Notes From comparison of certain species in the platystomatine genera Rhytidortalis Hendel, Euprosopia Macquart, and Pseudocleitamia Malloch the armature of the mesopleuron seems likely to be sexually dimorphic (see McAlpine, 2000 for Rhytidortalis; 1973 for Euprosopia; 2001 for Pseudocleitamia).	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3DFFD7572989A2AE9CFD9E.taxon	distribution	Distribution. Australasian Region: Micronesia — Guam; Australia — southern and eastern parts, including Lord Howe Island and Tasmania (latter a new record — Bruny Island, AM); Norfolk Island; New Caledonia (see below). Oriental Region: Java. Nearctic Region: California (introduced).	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3DFFD757198BB2AFB7F951.taxon	description	Fig. 6 Types. HOLOTYPE?, New Caledonia: Cap Ndoua site 1, rainforest, 150 m, 22 ° 23 ' S 166 ° 56 ' E, 21. xii. 2004 – 8. i. 2005, C. J. B., S. G. W., malaise trap (PM). PARATYPE, 1?, Port Boise (Gite Kanua), rainforest, 10 m, 22 ° 21 ' S 166 ° 58 ' E, 30. xi. 2004 – 1. xii. 2004, C. J. B., S. G. W., J. W. (QM). Description. Male (female unknown). Rather small to medium-sized dull blackish fly with few black wing markings, of very similar appearance to the familiar Australian P. doclea (Walker). Coloration. Head largely blackish; postfrons tawny-brown anteromedially, with greyish pruinescent orbital margins; face pale greyish pruinescent on somewhat more than upper half; occiput with grey pruinescence, particularly towards orbital margin and vertex. Antenna: segments 1 and 2 tawny-brown; segment 3 rather dark greyish brown. Prelabrum blackish, sometimes partly tawny; palpus dark greyish brown, with slightly paler apex. Thorax with black ground-colour, largely covered with dark grey to whitish pruinescence; scutellum partly tawny, but with entire dorsal surface covered with grey pruinescence; propleuron with pale-pruinescent zone just below spiracle separated from that on posterior margin of coxal foramen. Legs largely dark brown, including fore coxa; segments 1 and 2 of each tarsus yellow, their distal segments tending greyish brown. Wing hyaline, with blackish markings as in Fig. 6. Halter brown, with parts of base and capitellum paler, tawny-brown. Abdominal tergites and sternites black. Head. Width of postfrons near its mid-length 0.23 – 0.24 of width of head; height of cheek 0.06 – 0.08 of height of eye; lower outline of head capsule not noticeably expanded across cheek regions; single postgenal bristle strongly differentiated from fine postgenal setulae. Thorax of similar proportions to that of P. doclea and related species; scutellum without setulae; the following bristles present (presence of some inferred from position of sockets): scapulars, humeral, 1 + 1 notopleurals, supra-alar, postalar, posterior intra-alar, one dorsocentral, prescutellar acrostichal, two pairs of scutellars, mesopleural. Wing: venation typical of genus; cell- 4 index = 0.38 – 0.39. Abdomen, in dorsal view, rounded oval, anteriorly narrowed but not prolonged; tergites 2 to 5 with roughened granular surface. Aedeagus very similar to that of P. doclea (see Steyskal, 1961) and P. howei; distal end of stipe shortly swollen; preglans short, stout, asymmetrical, set off from both stipe and glans by constrictions; glans very shortly ovoid; terminal filaments long, slender, subequal in length, with slightly expanded apices. Dimensions. Total length 4.4 – 5.0 mm; length of thorax 1.7 – 2.0 mm; length of wing 3.6 – 4.1 mm; length of glans of aedeagus 0.23 mm.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE3DFFD757198BB2AFB7F951.taxon	distribution	Distribution New Caledonia: southern part of Grande Terre. Notes The males of P. monteithi differ from those of other known Australasian species of Pogonortalis in the absence of broadening of the head capsule and absence of the fascicle of enlarged cheek bristles (see diagrams in McAlpine, 1975). In these respects, even the larger male of P. monteithi more closely resembles the females of the other species. Pogonortalis monteithi further differs from P. hians Schneider and McAlpine in the more restricted wing markings, the more basally located anterior crossvein, and the entirely dull, pruinescent dorsal surface of the scutellum. It differs from P. howei Paramonov and P. doclea (Walker) in having the transverse dark wing stripe from the distal end of vein 1 oblique and meeting vein 4, instead of terminating at vein 3, and in having the whitish-pruinescent zone of the propleuron immediately below the spiracle separate from the pruinescent zone on the posterior margin of the fore coxal foramen. From P. howei it also differs in having antennal segment 3 dark brown, instead of rather bright, deep yellow, in the darker brown fore coxa and femur, and in the absence of a dark blotch at about the basal third of the marginal cell. The specific epithet refers to Geoffrey B. Monteith, who has encouraged this project and provided much New Caledonian material.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE32FFD8578789A2AFE2F996.taxon	type_taxon	Type species Sors wrightae n. sp.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE32FFD8578789A2AFE2F996.taxon	description	Description. Female (male unknown). Small, stout, dark flies; cuticle of head, thorax, and abdomen almost entirely pruinescent and non-shining; wing heavily variegated. Head anteroposteriorly compressed; vertical carina moderately sharp; face without prominent median carina; lower part of occiput convex, c. upper third flat to slightly concave; eye without obvious ommatrichia; the following bristles well developed: inner and outer vertical, upper fronto-orbital, postgenal; ocellar bristles small, hair-like, pale, widely divergent; postvertical bristles small, subparallel or divergent, procurved, inserted well below vertical carina. Antenna moderately short and stout; arista with segment 6 irregularly pubescent on whole length. Prelabrum well developed, broad but shallow; palpus moderately broad. Thorax. Cuticle with general covering of dense, short, dark microtrichia (typical pruinescence), but with pale markings indicated by distinctly longer, whitish microtrichia standing out in relief; mesoscutum much broader than long, extensively setulose; scutellum broadly rounded in dorsal view, slightly convex dorsally, with thin but not sharp posterior margin, extensively setulose, with sockets of posterior bristles prominent, tilted upwards so that rims form horizontal circles; mesopleuron only slightly convex; the following thoracic bristles present: humeral, 1 + 1 notopleurals, supra-alar, postalar, posterior intra-alar, one dorsocentral, prescutellar acrostichal, three pairs of scutellars, mesopleural; sternopleural bristle absent. Legs moderately short and stout; fore femur with posterodorsal and posteroventral bristles; mid tibia with one large apical ventral spur and no distinct secondary spurs. Wing rather broad; subcosta gradually approaching costa distally; vein 1 with a rather dense dorsal series of setulae from just beyond level of humeral crossvein, without more basal setulae; vein 2 without kink near mid-length; veins 3 and 4 very slightly divergent distally; vein 3 with numerous dorsal setulae; anterior crossvein as long as penultimate section of vein 4 or almost so; discal cell broad, relative to that of Platystoma and Euprosopia; anal cell obtusely angular posterodistally; squama forming moderately short rounded lobe. Abdomen. Tergite 5 moderately large; ovipositor sheath short and broad; aculeus slender.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE30FFDA575089A3A93FFCE1.taxon	description	Description (main diagnostic features only). Hairs (rays) on arista (antennal segment 6) all short and non-seriate, or absent; mesoscutum much wider than long; scutellum with only two or three pairs of bristles, all restricted to posterior half of its length or less; mesopleuron largely shining, with pruinescence-pubescence restricted to anteroventral part or absent; sternopleural bristle weakly differentiated from adjacent setulae or absent; mid femur without ventral spines; length of first section of vein 4 more than 0.7 of length of discal cell measured along vein 4; second section of vein 5 usually longer than anal crossvein; squama large; female: abdomen with large tergite 3, tergites 4 and 5 vestigial, often desclerotized; male: aedeagus with complex sclerotized glans, without hollow terminal filaments.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE30FFDA575089A3A93FFCE1.taxon	distribution	Distribution Australasian Region: New Guinea, Australia (including Lord Howe Island), Solomon Archipelago, New Caledonia. Oriental Region: Philippines, Sumatra (e. g., N. imitans de Meijere), but some species recorded from other countries probably not referable to genus (see McAlpine, 2001). Afrotropical Region: widely distributed in African tropics, Madagascar. New Caledonia apparently represents the eastern limit of the range of the genus, as the Fijian record is an error. Notes Naupoda is a diverse and widely distributed genus, and has perhaps not been adequately defined as a monophyletic taxon. The subgenus Gonga McAlpine, 2001, which contains exclusively the known Australasian species, is distinguished as given by McAlpine (2001: table 3), except that the frontoorbital bristle is not always distinct. The following key to species is preliminary, as it is based on the limited material at present on hand. Naupoda “ sp. 1 ” is an apparently undescribed species from the East Sepik and Central Provinces of Papua New Guinea (AM).	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE31FFDC56F68CB3A8B9FECC.taxon	description	Figs 9, 10	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE31FFDC56F68CB3A8B9FECC.taxon	materials_examined	Type. HOLOTYPE! (unique), New Caledonia: Pic du Pin site 1, rainforest, 280 m, 22 ° 15 ' S 166 ° 49 ' E, 25. xi. 2004 – 23. xii. 2004, C. J. B., S. G. W. (PM).	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE31FFDC56F68CB3A8B9FECC.taxon	description	Description. Female (male unknown). Coloration. Head predominantly tawny to tawny-yellow; postfrons with four small darker marks, blackish ocellar spot, and pale yellow anterior margin; parafacial with grey-brown spot near upper extremity; blackish horizontal stripe crossing face at about lower third and extending on to central cheek region; occiput with broad blackish zone on upper part. Antenna orange-tawny; arista largely brown. Prelabrum and palpus tawny-yellow. Mesoscutum and scutellum predominantly tawny-orange, with brown to blackish markings; humeral callus yellow, with large dark brown central zone; thoracic pleura brown-black, with two pale yellow marks on mesopleuron and smaller tawny marks on pteropleuron and hypopleuron. Legs predominantly tawny-yellow; all coxae partly brown; mid and hind femora with some longitudinal brown streaks; hind tibia with small anterior and posterior brown marks at c. basal third, and with larger blackish anterior and posterior subapical marks; tarsi pale yellow. Wing hyaline, with brown markings as in Fig. 10; subapical part of subcostal cell opaque yellow; alula faintly browned; axillary lobe and squama grey. Halter creamy-white. Abdominal tergite 1 + 2 tawny-orange to brownish; tergite 3 shining blackish with some tawny suffusion; pleural membrane of segments 1 to 3 grey-brown, that of segments 4 to 6 (judging from position of sternites) creamy-white, the two zones quite sharply contrasted; a narrow transverse blackish stripe within pale zone behind tergite 3 apparently covering the minute tergite 4, and, between this and segment 7, a pair of black dorsal spots (doubtfully associated with vestiges of tergite 5 or 6); ovipositor sheath and aculeus tawny. Head c. 1.4 × as wide as high; width of postfrons near midlength 0.35 × width of head; height of cheek 0.31 of height of eye; anterior margin of postfrons forming a somewhat prominent rounded ridge extending from eye to eye; face with pair of relatively deep antennal grooves, separated by a prominent, rounded median carina more complete than in other species of Gonga; the following cephalic bristles well developed: inner and outer vertical, postgenal; fronto-orbital bristle indistinctly differentiated from adjacent setulae. Antenna slightly longer than half height of face; segment 5 asymmetrical, very short, but longer than segment 4; segment 6 with very short hairs, mainly on distal half and basal extremity. Prelabrum moderately small, not attenuated medially. Thorax. Length of mesoscutum 0.78 of its width; length of scutellum 0.42 of length of mesoscutum; the following bristles present: rather small humeral, 1 + 1 notopleurals, postalar, rather large posterior intra-alar, quite small dorsocentral, prescutellar acrostichal, two pairs of scutellars, mesopleural, very small but distinguishable sternopleural. Legs: fore femur with numerous short posteroventral bristles; mid tibia with one rather large apical ventral spur. Wing: distal quarter of basal section of vein 4 abruptly attenuated, only slightly curved; second section of vein 5 longer than anal crossvein, bent near mid-length; anal crossvein only slightly oblique, slightly curved; length of discal cell 1.3 × that of second basal cell, both measured along vein 4; cell- 4 index = 0.63; both second basal and anal cells with extensive bare zones. Abdomen. Tergite 2 with posterior margin produced into slight median prominence; tergite 3 large and quadrate; tergite 4 apparently represented by minute sclerite within black band; sternites 1 to 3 well developed but progressively smaller in that sequence; sternites 4 to 6 distinct but much smaller. Dimensions. Total length 4.8 mm; length of thorax 2.7 mm; length of wing 5.5 mm.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
7F1787BFAE31FFDC56F68CB3A8B9FECC.taxon	distribution	Distribution New Caledonia: southern part of Grande Terre. Notes ACKNOWLEDGMENTS. I am grateful to K. Arakaki (BPB), G. B. Monteith, C. J. Burwell, and S. G. Wright (QM) for making available the interesting material described here, and to D. J. Bickel and S. F. McEvey for helpful discussion. S. Cowan and H. Smith processed the manuscript. This work was partly supported by a grant from Australian Biological Resources Study fund.	en	McAlpine, D. K. (2007): New Taxa of Signal Flies (Diptera: Platystomatidae) of New Caledonia. Records of the Australian Museum 59 (1): 65-77, DOI: 10.3853/j.0067-1975.59.2007.1485, URL: https://journals.australian.museum/mcalpine-2007-rec-aust-mus-591-6577/
