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Figs. 5–10 in Life history of Ameletus longulus Sinichenkova, 1981 (Ephemeroptera: Ameletidae) in a small stream in vicinity of Vladivostok

Figs. 5–10. Gradations the pads of wings of the different age groups of Ameletus longulus

Fig. 4 in Life history of Ameletus longulus Sinichenkova, 1981 (Ephemeroptera: Ameletidae) in a small stream in vicinity of Vladivostok

Fig. 4. The age structure of the Ameletus longulus population in the spring of Rybachii

Fig. 2 in Life history of Ameletus longulus Sinichenkova, 1981 (Ephemeroptera: Ameletidae) in a small stream in vicinity of Vladivostok

Fig. 2. The sampling site on the Rybachii village spring.

Fig. 3 in Life history of Ameletus longulus Sinichenkova, 1981 (Ephemeroptera: Ameletidae) in a small stream in vicinity of Vladivostok

Fig. 3. Dynamics of water temperature and body length range of Ameletus longulus in the

Fig. 1 in Life history of Ameletus longulus Sinichenkova, 1981 (Ephemeroptera: Ameletidae) in a small stream in vicinity of Vladivostok

Fig. 1. The map of the distribution of the Ameletus longulus in the Russian Far East (● –

FIGURES 68–70 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 68–70. Ameletus costalis, egg: 68. General view. 69. Structure of chorion and small knob-terminated coiled threads. 70. Large knobs. The arrow shows the micropiles (mp).

FIGURES 27–35 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 27–35. Ameletus longulus, male imago: 27. Mesonotum, dorsal view. 28. Fore wing. 29. Hind wing. 30. Sternum IX, styliger and gonostyli. 31. Genitalia, lateral view. 32. Penis, ventral view. 33. Penis, dorsal view. 34. Penis, lateral view. 35. Subgenital plate, female, dorsal view. Scale (mm): 30–35=0.5; 28–29=2.0; 27=1.0

FIGURES 21–23 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 21–23. Comb-shaped setae of maxilla: 21. Ameletus khasanensis sp. nov., 22. Ameletus longulus, 23. Ameletus costalis. The arrow shows the first seta.

FIGURES 36–46 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 36–46. Ameletus longulus, larva: 36. Labrum, dorsal view. 37–38. Apices of mandibles, dorsal view: 37–left mandible, 38 right mandible. 39. Labium, dorsal view. 40. Femur of foreleg. 41–46. Gills: 41. Gill I, 42. Gill II, 43. Gill III, 44. Gill IV, 45. Gill VI, 46. Gill VII. Scale (mm): 36, 39, 41–46=0.5; 37–38=0.2. The arrow shows the group of setae.

FIGURES 50–58 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 50–58. Ameletus costalis: male imago: 50. Mesonotum, dorsal view. 51. Tibia of foreleg. 52. Fore wing. 53. Sternum IX, styliger and gonostyli. 54. Genitalia, lateral view. 55. Penis, ventral view. 56. Penis, dorsal view. 57. Penis, lateral view. 58. Subgenital plate, female, dorsal view. Scale (mm): 50=1.0; 52=2.0; 53–58=0.5.

FIGURES 1–9 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 1–9. Ameletus khasanensis sp. nov., male imago: 1. Mesonotum, dorsal view. 2. Fore wing. 3. Hind wing. 4. Sternum IX, styliger and gonostyli. 5. Genitalia, lateral view. 6. Penis, ventral view. 7. Penis, dorsal view. 8. Penis, lateral view. 9. Subgenital plate, female, dorsal view. Scale (mm): 4–9=0.5; 1, 3=1.0; 2=2.0.

FIGURES 47–49 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 47–49. Ameletus longulus, egg: 47. General view. 48. Structure of chorion and small knob-terminated coiled threads. 49. Large knobs. The arrow shows the micropiles (mp).

FIGURES 59–67 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 59–67. Ameletus costalis, larva: 59–60. Apices of mandibles, dorsal view: 59. Left mandible, 60. Right mandible. 61. Femur of fore leg. 62–67. Gills: 62. Gill I, 63. Gill II, 64. Gill III, 65. Gill IV, 66. Gill VI, 67. Gill VII. Scale (mm): 62–68=0.5; 60–61=0.2. The arrow shows the group of setae.

FIGURES 24–26 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 24–26. Ameletus khasanensis sp. nov., egg: 24. General view. 25. Structure of chorion and small knob-terminated coiled threads. 26. Large knobs. The arrow shows the micropiles (mp).

FIGURES 10–20 in New species of Ameletus Eaton, 1885 and redescription of Ameletus longulus Sinichenkova, 1981 from the Russian Far East (Ephemeroptera: Ameletidae)

FIGURES 10–20. Ameletus khasanensis sp. nov., larva: 10. Labrum, dorsal view. 11–12. Apices of mandibles, dorsal view: 11–left mandible, 12 right mandible. 13. Labium, dorsal view. 14. Femur of foreleg. 15–20. Gills: 15.Gill I, 16. Gill II, 17. Gill III, 18. Gill IV, 19 Gill VI, 20. Gill VII. Scale (mm): 10, 13, 15–20=0.5; 11–12=0.2. The arrow shows the group of setae.