Gynacantha dobsoni Fraser, 1951: 307 The genus Gynacantha Rambur, 1842 in the South Pacific (Odonata: Anisoptera: Aeshnidae) Theischinger, Gunther Marinov, Milen Bybee, Seth Jensen, Colin Theuerkauf, Jörn Rashni, Bindiya Zootaxa 2020 2020-05-13 4778 1 171 195 3HVTC Fraser, 1951 Fraser 1951 [151,563,801,828] Insecta Aeshnidae Gynacantha Animalia Odonata 4 175 Arthropoda species dobsoni  ( Figs 4, 13, 22, 27, 34a, 34b, 36c, 36d, 36i, 36j)      Gynacantha dobsoni Fraser, 1951: 307.    Lectotype ♂: Dunk Island, Great Barrier Riff, Qld( ANIC); seen.   Material studied.   New Caledonia. La Foa: 1 ♂found dead in a supermarket, 2018 ( NZAC); dry forest of Tiéa, 21°07’S/ 164°57’E, Malaise trap8668: 1 ♂  4–5 November 2001, C. Burwellleg. ( QM);  Dumbéa: 1 ♀(2246),  15 May 1984, D.A.L. Daviesleg. ( CUMZ);  Hienghèneor Dumbéa: 1 ♂(2247), 1984 (1981) ( CUMZ);  Hienghene: 2 ♀♀(2248), 1 ♂(2249),  28 November 1981, ( CUMZ);  Hienghène: 2 ♀♀(2252, 2256),  30 November 1981, D.A.L. Daviesleg. ( CUMZ); 1 ♀, 2 December 1944, Wilfred Crabb (SI);  Dumbéa Rd: 1 ♂(2250),  15 April 1984, D.A.L. Daviesleg. ( CUMZ);  Lifou Island, Cap des Pins: 2 ♂♂(2251, 2254),  13 November 1990, 1 ♂(2253),  18 November 1990( CUMZ);  Koné: 1 ♀(2255), 1983, D.A.L. Daviesleg. ( CUMZ).   North Queensland.“11 Mile Scrub”,  19 kmW of Moreton, Cape York Peninsula: 1 ♀,  1–2 July 1975, G.B. Monteithleg. ( AM);  Cairns: 1 ♀, E. Allenleg. ( AM);  Claudie River, Iron Range: 1 ♀,  21 September 1974, M.S. Mouldsleg., 1 ♀,  8 October 1974, G. Danielsleg. (both AM);  Dalhunty Riverxing, Cape York Peninsula: 1 ♂, 8 October, M.S.& B.J. Mouldsleg. ( AM);  Gordon Creek, Iron Range: 1 ♂,  26 April 1975, 2 ♂♂,  7 May 1975, 1 ♂, 1 ♀,  10 May 1975, M.S. Mouldsleg. ( AM);  7kmN of Hope Vale Mission( 15.14°S/ 145.07°E): 1 ♂,  4 October 1980, T. Weirleg. ( AM);  Iron Range, Cape York Peninsula: 1 ♀,  26 May–2 June 1971, B. Cantrellleg. ( AM);  Iron Range, Cape York Peninsula: 1 ♀,  30 June–4 July 1977, G.B. Monteithleg. ( AM);  Julatten: 1 ♀,  January 1968( AM);  Lankelly Creek, McIlwraith Rangenr Coen, 1 ♀, 28–31 Oc- tober 1969, B. Cantrellleg. ( AM);  Lizard Island NNE of Cooktown: 1 ♀,  20 November 1974, M.S. & B.J. Mouldsleg. ( AM);  Mid Claudie River, Iron Range: 1 ♂, 27 August   1974, 8 m, 1 ♀,  30 August 1974, A. & G. Danielsleg. ( AM);  Middle Claudie River, Iron Range: 1 ♀,  12 October 1974, 1 ♀,  18 October 1974, 1 ♀,  8 October 1974, 8 ♂♂,  11 November 1974, 2 ♂♂, 1 ♀,  15 November 1974, 1 ♂,  17 November 1974, 1 ♂,  19 November 1974, 1 ♂, 2 ♀♀,  20 November 1974, all M.S. Mouldsleg. ( AM);  Mt Lomond, Iron Range: 1 ♀, 19 Sepember1974, M.S. Mouldsleg. ( AM);  3 kmNE of Mt Webb( 15.03°S/ 145.09°E): 1 ♀,  1–3 October 1980, T. Weirleg. ( AM); N camp Beagle,  45 kmN Aurukun: 1 ♀,  18–25 November 1981, M. Robinsonleg. ( AM);  Peach Creek,  25 kmNNE Coen: 1 ♀,  2 November 1979, 1 ♂,  3 November 1979, M.S. & B.J. Mouldsleg. ( AM);  Rocky River, McIlwraith Rangevia Coen: 1 ♀,  6–8 November 1969, B. Cantrellleg. ( AM);  Station Creek, N of Mareeba: 1 ♂,  30 October 2004, 1 ♂, 7 No- vember 2004, both L. Muellerleg. ( AM);  Stewart Riverxing, S of Coen: 1 ♂,  7 October 1979, M.S. & B.J. Mouldsleg. ( AM);  Tozer Gapnr Iron Range: 2 ♂♂,  18 October 1974, M.S. Mouldsleg. ( AM);  Upper Jardine River, Cape York Peninsula: 11°17’S/ 142°35’E: 1 ♀,  23 October 1979, M.S. & B.J. Mouldsleg. ( AM);  West Claudie River, Iron Range: 4 ♂♂, 4 ♀♀,  13 September 1974, 2 ♂♂, 6 ♀♀,  16 September 1974, 1 ♂, 1 ♀,  23 September 1974, 1 ♂,  8 October 1974, all M.S. Mouldsleg. ( AM).  South   Queensland. Caloundra, Ring Tank: 1 ♂,  December 1998, A.G. Orr( A.G. Orr, private collection).    Northern Territory. Darwin: 1 ♂,  25 August 1974, L. Oosterweghelleg. ( RMNH).    Western Australia. Kings Cascades, Prince Regent River: 1 ♂, 2 ♀♀,  17 August 1994, L. Muellerleg. ( ANIC).   Distribution.North and north-east of Australia, New Caledonia.  Diagnostic characters:Postfrons with dark T-mark. Both Hw with space between CuP and A1 basally not expanded and without double cells in proximal half. Generally more than 10 denticles along genital fossa rather close to it, rather regularly spaced and often not restricted to posterior portion. Superior anal appendages very slender, almost straight, clubbed, with apical portion approximately 1.5 times basal width and with apex narrowly curved postero-laterally into a moderately long acute point; inferior anal appendage distinctly shorter than 1/3 the length of superiors, with lateral edges of basal portion convex and rather abruptly narrowing into a distinctly tapered apical portion. Generally distinguished from  G. rosenbergi, with which it overlaps in Australia, by (1) having more denticles (8–30) along genital fossa that are often not restricted to the posterior part, (2) straighter, more sharply pointed superior anal appendages and (3) by the shorter, more distinctly tapered apical portion of the shorter inferior appendage. Distinguished from  G. amphora, with which it probably does not overlap in range, by (1) only 2 rows of cells between anal triangle and anal loop in Hw, (2) by lack of a pale mid-dorsal pattern element in S2 and (3) by the much slimmer posterior part of S3. 2612527327 [151,888,975,1002] ANIC Qld Dunk Island Great Barrier Riff 4 175 1 1 lectotype 2612527365 [409,1229,1011,1038] NZAC New Caledonia La Foa 4 175 1 1 2612527362 2001-11-04 2001-11-05 2001-11-04 QM C. Burwell New Caledonia -21.116667 Tiea 1265 164.95 4 175 1 1 2612527315 1984-05-15 CUMZ D. A. L. Davies New Caledonia Dumbea 4 175 1 1 2612527339 [616,1274,1083,1110] CUMZ New Caledonia Hienghene Dumbea 4 175 1 1 2612527361 1981-11-28 CUMZ New Caledonia Hienghene 4 175 3 2 1 2612527330 1981-11-30 CUMZ D. A. L. Davies New Caledonia Hienghene 4 175 2 2 2612527332 1984-04-15 CUMZ D. A. L. Davies New Caledonia Dumbea Rd 4 175 1 1 2612527357 1990-11-13 1990-11-18 1990-11-13 CUMZ New Caledonia Lifou Island Cap des Pins 4 175 3 3 2612527386 [327,927,1227,1254] CUMZ D. A. L. Davies New Caledonia Kone 4 175 1 1 2612527304 1975-07-01 1975-07-02 1975-07-01 AM G. B. Monteith New Caledonia North Queensland. Cape York Peninsula 4 175 1 1 2612527385 [1081,1432,1263,1290] AM E. Allen New Caledonia Cairns 4 175 1 1 2612527377 1974-09-21 1974-10-08 1974-09-21 AM M. S. Moulds & G. Daniels New Caledonia Claudie River Iron Range 4 175 2 2 2612527341 [221,1256,1335,1362] AM October, M. S. & B. J. Moulds New Caledonia Dalhunty River Cape York Peninsula 4 175 1 1 2612527307 1975-04-26 1975-05-10 1975-04-26 AM M. S. Moulds New Caledonia Gordon Creek Iron Range 4 175 5 1 4 2612527371 1980-10-04 AM T. Weir New Caledonia -15.14 Hope Vale Mission 772 145.07 4 175 1 1 2612527342 1971-05-26 1971-06-02 1971-05-26 AM B. Cantrell New Caledonia Iron Range Cape York Peninsula 4 175 1 1 2612527343 1977-06-30 1977-07-04 1977-06-30 AM G. B. Monteith New Caledonia Iron Range Cape York Peninsula 4 175 1 1 2612527305 [384,760,1479,1506] 1968-01 AM New Caledonia Julatten 4 175 1 1 2612527316 AM B. Cantrell New Caledonia Coen Lankelly Creek McIlwraith Range 4 175 1 1 2612527375 1974-11-20 AM M. S. & B. J. Moulds New Caledonia Lizard Island 4 175 1 1 2612527317 [279,818,1551,1578] New Caledonia Mid Claudie River Iron Range 4 175 1 1 2612527372 1974-08-30 AM A. & G. Daniels New Caledonia 1975 4 175 1 1 2612527349 1974-10-08 1974-11-20 1974-10-08 AM M. S. Moulds New Caledonia Middle Claudie River Iron Range 4 175 19 6 13 2612527355 AM Sepember & M. S. Moulds New Caledonia Mt Lomond Iron Range 4 175 1 1 2612527340 [278,1244,1695,1722] 1980-10-01 1980-10-03 1980-10-01 AM T. Weir New Caledonia -15.03 Mt Webb 772 145.09 4 175 1 1 2612527318 1981-11-18 1981-11-25 1981-11-18 AM M. Robinson New Caledonia Beagle 4 175 1 1 2612527368 1979-11-02 1979-11-03 1979-11-02 AM M. S. & B. J. Moulds New Caledonia Peach Creek 4 175 2 1 1 2612527382 1969-11-06 1969-11-08 1969-11-06 AM B. Cantrell New Caledonia Coen Rocky River McIlwraith Range 4 175 1 1 2612527374 2004-10-30 AM L. Mueller New Caledonia Station Creek 4 175 2 2 2612527319 1979-10-07 AM M. S. & B. J. Moulds New Caledonia Stewart River 4 175 1 1 2612527352 [278,1125,1875,1902] 1974-10-18 AM M. S. Moulds New Caledonia Tozer Gap Iron Range 4 175 2 2 2612527378 1979-10-23 AM M. S. & B. J. Moulds New Caledonia -11.283334 Upper Jardine River 1295 142.58333 Cape York Peninsula 4 175 1 1 2612527336 1974-09-13 1974-10-08 1974-09-13 AM M. S. Moulds New Caledonia West Claudie River Iron Range 4 175 19 11 8 2612527312 [276,1379,152,179] 1998-12 A. G. Orr Ring Tank Caloundra 5 176 1 1 Queensland 2612527348 [199,1135,188,215] 1974-08-25 RMNH L. Oosterweghel Darwin 5 176 1 1 Northern Territory 2612527329 1994-08-17 ANIC L. Mueller Prince Regent River Kings Cascades 5 176 3 2 1 Western Australia