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FIGURE 17 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 17. Habitat of Macrogomphus phalantus jayavarman subsp; nov., margin of open temporarily flooded forest 1.5 km SSW of Kampong Pluk village, 70 m S from northern bank of Lake Tonlé Sap, at the beginning of water level rise on 15 vi 2018.

FIGURE 14 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 14. Males of Macrogomphus phalantus jayavarman subsp; nov. in nature (the same data as in Fig. 9). On the left upper photo a dead colony of bivalve mollusks is seen on the branch, which appeared when the forest was inundated.

FIGURE 12 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 12. Holotype, male (a), and paratype, female (b) of Macrogomphus phalantus jayavarman subsp; nov. Cambodia, Siem Reap Province, 1.5 km SSW of Kampong Pluk village, 70 m S from northern bank of Lake Tonlé Sap, low, open temporarily flooded forest, 13.1956° N, 103.9725° E, 3 m a.s.l., 15 vi 2018, O. Kosterin leg.

FIGURE 10 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 10. Male individuals (of Macrogomphus albardae in the sense of this paper) of the dashed (a–b) and intermediate (c) morphs from the northern Vietnam, identified as M. guilinensis by Kompier (2019): a— Bắc Can Province, Ba Bể National Park, 24 vii 2014; b— the same place, 9 vii 2017; c—Quang Binh Province, Phong Nha—Kẻ Bàng National Park, 6 v 2016. Not to scale. Courtesy of Tom Kompier.

FIGURE 8 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 8. Holotype of Macrogomphus borikhanensis Fraser, 1933 and its labels (BMNH): a—dorsal view; b—lateral view. Not to scale. Courtesy of Benjamin Price.

FIGURE 5. A in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 5. A small male of Macrogomphus albardae of the ringed morph, collected by the author on 21 viii 2018 in Cambodia, Preah Vihear Province, Srae Veal village env.: a—habitus in live colours, dorsal view; b—ditto, lateral view (not to scale); canal appendages, dorsal view; d—ditto, lateral view; e—secondary genitalia, lateral view; f—posterior hamulus, anteriolateral view. Scale bars: upper 2 mm; lower 0.5 mm.

FIGURE 9 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 9. Details of the holotype of Macrogomphus borikhanensis Fraser, 1933 (BMNH): a—anal appendages, dorsal view; b—ditto, lateral view; c—secondary genitalia, lateral view; d—anal appendages as depicted by Fraser (1933: fig. 8a, c) (the same as Fig. 2c). Not to scale. Courtesy of Benjamin Price.

FIGURE 11 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 11. Anal appendages of males of Macrogomphus albardae reported as M. matsukii Asahina, 1986, by Yokoi (2002; Yokoi & Sopuhanthong 2014) from Laos, Vientiane Prefecture, 10 km NW of Tabok, 3 v 2001, N. Yokoi leg., courtesy of Naoto Yokoi (a–b), by Kosterin et al. (2011) from Thailand, Nakhon Ratchasima Province, Nong Bun Nak village, viii 2009, Alexey Korshunov leg. (c); and by Kompier (2018) from Vietnam, Lâm Đồng Province, Cát Tiên National Park, Ben Cuu Rapids, 3 v 2018, J. Holden leg. (d). Not to scale.

FIGURE 3 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 3. Anal appendages (a–h) and secondary genitalia (j–k) of Macrogomphus albardae as illustrated in literature: aafter Lieftinck (1935: fig. 9) (as M. parallelogramma albardae); b—after Orr (2005: p. 64) (as M. parallelogramma albardae); c—after Fraser (1933: fig. 8a, c) (as M. borikhanensis); d—after Asahina (1986: fig. 8–9) (as? M. phalantus): e, j—after Asahina (1986: fig. 4–6) (as M. borikhanensis); f, i—after Chao (1982: fig. 1, 3, 6) (as M. guilinensis); g—after Wilson (2005: fig. 17 d, e) (as M. guilinensis); h—after Karube (2014: fig. 13) (as M. guilinensis). Not to scale; j mirrored. Asterisk indicates the proximal inner swelling of the cercus.

FIGURE 15 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 15. Details of male specimens of Macrogomphus phalantus: a–f—M. p. jayavarman subsp; nov., the holotype; gh—M. p. phalantus (After Lieftinck 1935: figs.11–12); a—head, frontal view; b–c,g—secondary genitalia, lateral view; d—anal appendages, dorsal view; e—ditto, lateral view; f—ditto, ventral view; h—dorsal and lateral view. Scale bar 1 mm. Asterisk indicates the proximal inner swellings of the cerci.

FIGURE 7 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 7. Details of the abdomen of the holotype of Macrogomphus rivularis Förster, 1914 (UMMZ): a—end of abdomen, dorsal view; b—ditto, lateral view; c—ditto, ventral view; d—base of abdomen with secondary genitalia, lateral view. Not to scale. Courtesy of Erica Tucker.

FIGURE 6 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 6. Holotype of Macrogomphus rivularis Förster, 1914 (a–b) and its labels (c) (UMMZ): a—dorsal view; b—lateral view. Courtesy of Erica Tucker.

FIGURE 4 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 4. The dashed (a) and intermediate (b) morphs of males of Macrogomphus albardae in nature in peninsular Thailand, Koh Samui Island, Baan Lipa Noi, Wanom Waterfall: a—10 iii 2012; b—13 vii 2009. Courtesy of Leslie Day.

FIGURE 16 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 16. Details of the female paratype of Macrogomphus phalantus jayavarman subsp; nov., the holotype; a—head, frontal view; b—occiput, frontal view; d—right part of vulvar lamina, ventral view. Scale bar 1 mm.

FIGURE 13. A in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 13. A male paratype of Macrogomphus phalantus jayavarman subsp; nov. in live colours (the same data as in Fig. 9).

FIGURE 1 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 1. Details of the specimens identified as Macrogomphus parallelogramma s. str.: the holotype female (a) and males (b–i), as illustrated by Hagen in Selys (1858: planche 5, fig. 5 and planche 20, fig. 4) (a–f); of a male specimen from "Java mer." from RBINS collection (Courtesy of Jérôme Constant) (g–j): and of a male specimen from "W. Java. 100 m. /, Djaniga / Tjibarangbang / 30.IV.1939 / over stream p.m. / M.A. Lieftinck" and kept in RMNH (courtesy of Jan van Tol) (k,l); a—head, dorsal view; b,h—S8–10 (dorsal view); c,i—ditto (lateral view); d—S10 and appendages, lateral view; e—epiproct, ventral view; f–g,k—cerci, posteriodorsal view; j–k—labels. Asterisk marks the bulge of the inner cercus margin. Not to scale.

FIGURE 2 in New synonyms and a new subspecies of Macrogomphus Selys, 1858 (Odonata: Gomphidae) from continental south-east Asia

FIGURE 2. Details of some male specimens of Macrogomphus albardae kept in RMNH (courtesy of Jan van Tol): a–d—the male syntype (the labels 'Holotype' are misleading); e—"W. Borneo, 0 m. / Singkawang / Penanring / L. Coomans de Ruiter / 24. II. 1932"; f—"S. Sumatra / Terbanggi-Hilir / nr. Menggala / Lampang distr. / 18. VIII. 1936 / M. Bartels"; a—general habitus; b, e–f—S10 and anal appendages, dorsal view; c—head and thorax, dorsolateral view; d—labels of the male syntype. Not to scale.