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44 results for “Euphaea”
Linked collectors and determiners for: A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea.
Natural history specimen data linked to collectors and determiners held within, "A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/c8d905a3-01d4-4d5f-a904-fad72add2ae1">https://bionomia.net/dataset/c8d905a3-01d4-4d5f-a904-fad72add2ae1</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/c8d905a3-01d4-4d5f-a904-fad72add2ae1">https://gbif.org/dataset/c8d905a3-01d4-4d5f-a904-fad72add2ae1</a>. Formatted as a Frictionless Data package.
Data from: Pleistocene speciation with and without gene flow in Euphaea damselflies of subtropical and tropical East Asian islands
Climatic oscillations during the Pleistocene period could have had a profound impact on the origin of tropical species by the alternation of allopatric isolation and inter-population gene flow cycles. However, whether tropical speciation involves strictly allopatric isolation, or proceeds in the face of homogenizing gene flow, is relatively unclear. Here, we investigated geographical modes of speciation in four closely-related Euphaea damselfly species endemic to the subtropical and tropical East Asian islands using coalescent analyses of a multi-locus data set. The reconstructed phylogenies demonstrated distinct species status for each of the four species and the existence of two sister species pairs, E. formosa/E. yayeyamana and E. decorata/E. ornata. The species divergence time of the sibling Euphaea damselflies dates back to within the last one Mya of the Middle to Lower Pleistocene. The speciation between the populous E. formosa of Taiwan and the less numerous E. yayeyamana of the Yaeyama islands occurred despite significant bidirectional, asymmetric gene flow, which is strongly inconsistent with a strictly allopatric model. In contrast, speciation of the approximately equal-sized populations of E. decorata of the south-east Asian mainland and E. ornata of Hainan is inferred to have involved allopatric divergence without gene flow. Our findings suggest that differential selection of natural or sexual environments is a prominent driver of species divergence in subtropical E. formosa and E. yayeyamana; whereas for tropical E. decorata and E. ornata at lower latitudes, allopatric isolation may well be a pivotal promoter of species formation.
FIGURES 2–10 in The final stadium larva of Euphaea decorata Hagen in Selys, 1853, from Fujian, China (Odonata: Zygoptera: Euphaeidae)
FIGURES 2–10. Morphological details of the final stadium larva of Euphaea decorata: (2) gena, dorsal view; (3) left antenna; (4) prementum, ventral view; (5) palpal lobe, ventral view; (6) female abdomen, ventral view; (7) male primary genitalia, ventral view; (8) female primary genitalia, lateral view; (9) median gill, ventral view; (10) lateral gill, ventral view.
FIGURES 11–12 in The final stadium larva of Euphaea decorata Hagen in Selys, 1853, from Fujian, China (Odonata: Zygoptera: Euphaeidae)
FIGURES 11–12. Adults of Euphaea decorata: (11) male adult, lateral view; (12) female adult, lateral view.
FIGURES 4–9 in Description of larva of Euphaea superba Kimmins, 1936 (Odonata: Zygoptera: Euphaeidae) from China
FIGURES 4–9. Larva of Euphaea superba: (4) male right antenna, dorsal view; (5) male left gena, ventral view; (6) spines on male left gena, ventral view; (7) spines on male right gena, ventral view; (8) spines on female left gena, ventral view; (9) spines on female right gena, ventral view. Scale bars = 1 mm.
FIGURES 20–25 in Description of larva of Euphaea superba Kimmins, 1936 (Odonata: Zygoptera: Euphaeidae) from China
FIGURES 20–25. Larva of Euphaea superba: (20) male lateral abdominal gills, ventral view; (21) vestigial male primary genitalia, lateral view; (22) female primary genitalia, ventral view; (23) female primary genitalia, lateral view; (24) male median gill, ventral view; (25) male median gill, lateral view. Scale bars = 1 mm.
FIGURES 10–19 in Description of larva of Euphaea superba Kimmins, 1936 (Odonata: Zygoptera: Euphaeidae) from China
FIGURES 10–19. Larva of male Euphaea superba: (10) labrum, anterior view; (11) left mandible, internal view; (12) left mandible, ventral view; (13) right mandible, internal view; (14) right mandible, ventral view; (15) left galeolacinea, dorsal view; (16) left maxilla, dorsal view; (17) left maxilla, ventral view; (18) prementum, ventral view; (19) right lateral lobe, dorsal view. Scale bars = 1 mm.
FIGURES 2–3 in Description of larva of Euphaea superba Kimmins, 1936 (Odonata: Zygoptera: Euphaeidae) from China
FIGURES 2–3. Larva of male Euphaea superba with mandibles removed: (2) dorsal view; (3) ventral view. Scale bars = 5 mm.
FIGURES 34–36 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 34–36. Holotype male of Euphaea khaochongensis. (34) habitus; (35) tips of wings; (36) anterior view of head. Photos by Takuya Kiyoshi.
FIGURES 29–30 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 29–30. Comparison of the genitalia (ventral view) of male of Euphaea cyanopogon sp. nov. (29) and E. pahyapi (30). Illustrations by A.G. Orr.
FIGURES 25–28 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 25–28. Comparison of the tip of abdomen and anal appendages (lateral and dorsal views) of male of Euphaea cyanopogon sp. nov. (25–26) and E. pahyapi (27–28). Illustrations by A.G. Orr.
FIGURES 22–24 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 22–24. Euphaea pahyapi, individuals photographed in nature at the type locality (Khao Phanom Bencha, Krabi province) in Thailand. (22–23) male; (24) female. Photos by Matti Hämäläinen.
FIGURES 14–21 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 14–21. Female paratype of Euphaea cyanopogon sp. nov. (14) head, anterior view; (15) head, dorsal view; (16) prothorax, dorsal view; (17) prothorax, oblique dorsal view; (18) prothorax, lateral view; (19) head (dorsal view) and thorax (lateral view); (20) wing tips; (21) tip of abdomen. Photos by Oleg Kosterin.
FIGURES 11–13 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 11–13. Variation in the colour pattern of face in males of Euphaea cyanopogon sp. nov. (11) male from the type locality in Cambodia; (12) male from from Phú Quỗc Island in Vietnam; (13) from Phú Quỗc Island in Vietnam. Photos by Oleg Kosterin (11) and Tom Kompier (12–13).
FIGURES 5–10 in Euphaea cyanopogon sp. nov. from the Cardamom ecoregion in Cambodia and Vietnam (Odonata: Euphaeidae)
FIGURES 5–10. Male holotype of Euphaea cyanopogon sp. nov. (5) head, anterior view; (6) head, dorsal view; (7) wings; (8) genitalia, ventral view; (9) tip of abdomen with appendages, dorsal view; (10) tip of abdomen with appendages, lateral view. Photos by Oleg Kosterin.
FIGURE 21 in A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea
FIGURE 21. Distribution maps of 3 Anisopleura and 7 Bayadera species in Vietnam. Closed circles represent the provinces in which the distribution is confirmed. Lines drawn in A. bipugio show the northern, central, and southern areas of Vietnam separated by the gaps of main mountainous regions.
FIGURE 20 in A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea
FIGURE 20. Euphaea spp. [20a–d] Euphaea saola sp. nov., holotype ♂ and paratype ♀ and [20e] E. guerini, Hon Ba. (20a) habitus male; (20b) S9–10 and appendages, lateral view; (20c) genital ligula, dorsal view; (20d) head female, antero-dorsal view; (19e) S10 and appendages, lateral view. Scale bar is 10 mm in 20a.
FIGURE 17 in A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea
FIGURE 17. Euphaea spp. [17a–d] E. ochracea, Mang Den, Kon Tum & [17e], Penang, Malaysia; [17f–j] holotype (♂) and paratype (♀) of E. sanguinea sp. nov. (17a, f) male habitus; (17b, g) female habitus; (17c) genital ligula, ventral view; (17e, j) left cercus, interolateral view; (17h) male head in antero-dorsal view; (17d, i) female heads in antero-dorsal view. Scale bars in mm.
FIGURE 19 in A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea
FIGURE 19. Euphaea pahyapi. [19a–d] ♂, Phu Quoc. (19a) head and thorax; (19b) head, antero-dorsal view; (19c) appendages, lateral view; (19d) wings.
FIGURE 18 in A synopsis of the Euphaeidae (Odonata: Zygoptera) of Vietnam, with descriptions of two new species of Euphaea
FIGURE 18. Euphaea spp. [18a–f] vesicle of male and [18g–j] prothorax of female, dorsal view. (18a, b, g) E. saola sp. nov. from (18a) A Luoi and (18b) Chu Mom Ray; (18c, h) E. guerini, Bhalee; (18d, i) E. hirta, Nam Nung; (18e, j) E. masoni, Lang Van; (18f) E. pahyapi, Phu Quoc.
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