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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.

FIGURE 5. A–F in Two new species of Syrphidae (Diptera) from Chukotka (Northern Russian Far East)

FIGURE 5. A–F: Platycheirus beringiensis sp. n. G: Platycheirus immarginatus Zetterstedt. A: fore-tibia and tarsus, ventral view. B: fore-leg, dorsal view. C & G: mid-tibia, dorsal view. D: mid-femur, posterior view. E: antenna, lateral view. F: abdomen, dorsal view.

FIGURE 4. A–D in Two new species of Syrphidae (Diptera) from Chukotka (Northern Russian Far East)

FIGURE 4. A–D: Cheilosia chukotana sp. n. A: head, lateral view. B: head, dorsal view. C: antenna, lateral view. D: wing.

FIGURE 3. A in Two new species of Syrphidae (Diptera) from Chukotka (Northern Russian Far East)

FIGURE 3. A: Cheilosia chukotana sp. n. lateral view. B: Platycheirus beringiensis sp. n. dorsal view.

FIGURES 1–7 in A taxonomic revision of two local endemic Radix spp. (Gastropoda: Lymnaeidae) from Khodutka geothermal area, Kamchatka, Russian Far East

FIGURES 1–7. Radix auricularia (Linnaeus, 1758) from Russian Far East. Figs. 1-4. Shell and proximal part of the female genitalia. Scale bar 2 mm. Fig. 1. Holotype of Lymnaea (R.) hadutkae Kruglov & Starobogatov, 1989 syn. n. (shell photo: M.V. Vinarski; genitalia redrawn from the protologue, Fig. 2.7). Fig. 2. Holotype of L. (R.) thermokamtschatica Kruglov & Starobogatov, 1989 syn. n. (shell photo: M.V. Vinarski; genitalia redrawn from the protologue, Fig. 2.9). Fig. 3. Newly collected specimen from the Khodutka geothermal area, Kamchatka (photos: O.V. Aksenova). Fig. 4. Specimen from Malkinskie hot springs, Kamchatka (photos: O.V. Aksenova). Fig. 5. Bayesian phylogram of haplotypes based on mitochondrial COI gene dataset (Appendixes 1 & 2). The scale bar indicates the branch length. Asterisks: Posterior probabilities ≥0.95; other significant node support values are mentioned in the figure. Haplotypes exclusively from NCBI's Genbank are marked with circumflex accents (˄). The well-supported clade with two haplotypes from the Khodutka geothermal area is highlighted in blue. Fig. 6. General view of the Khodutka warm lake. Fig. 7. Map of observed localities on the Russian Far East. The red circles represent species records. Locality codes are given in Appendix 1. The digital elevation model and other layers of the map were added from Esri Data & Maps 10 dataset (Map: M.Yu. Gofarov).

FIGURES 1–5. 1 in A new species of Xylota Meigen (Diptera: Syrphidae) from the Far East

FIGURES 1–5. 1) Theca of hypandrium of Xylota coquilletti (from Mutin 1988a). 2) Surstylus of Xylota coquilletti (from Mutin 1988a). 3) Male genitalia in lateral view of Xylota danieli spec. nov. (from Hippa 1978). 4) Male holotype and labels of Xylota coquilletti amamiensis. Photo by K. Ichige. 5) Male holotype of Xylota danieli spec. nov. Photo by V. L okt ion ov.

FIGURES 48–57. Callientomon chinensis Yin, 1980, specimen from the Russian Far East. 48 in Identification and character analysis of the Acerentomidae (Protura) of the northeastern Palearctic (Protura: Acerentomidae)

FIGURES 48–57. Callientomon chinensis Yin, 1980, specimen from the Russian Far East. 48) Tergite I, right side. 49) Tergite XI, left side. 50) Prosternum, left side. 51) Mesosternum, left side. 52) Metasternum, left side. 53) Accessory seta on sternite VI. 54) Seta β1 on foretarsus. 55) Seta δ4 on foretarsus. 56) Sternite I. 57) Sternite VII. Arrows show pores. Scale bar: 20 µm.

FIGURES 8–11. Linevitshia prima Makarchenko, pupa. 8 in Morphological redescription and DNA barcoding of Linevitshia prima Makarchenko, 1987 (Diptera: Chironomidae: Diamesinae) from Amur River basin (Russian Far East), with notes on systematics of the genus

FIGURES 8–11. Linevitshia prima Makarchenko, pupa. 8, frontal setae on frontal apotome; 9, tergites III–IV; 10, sternite VIII and anal segment in dorsal view, male; 11, sternite VIII and anal segment in dorsal view, female. Scale bars: Fig. 8: 50 µm; Figs. 9–11: 200 µm.

FIGURES 1–7. Linevitshia prima Makarchenko, male. 1 in Morphological redescription and DNA barcoding of Linevitshia prima Makarchenko, 1987 (Diptera: Chironomidae: Diamesinae) from Amur River basin (Russian Far East), with notes on systematics of the genus

FIGURES 1–7. Linevitshia prima Makarchenko, male. 1, hypopygium in dorsal view (Hokkaido, Japan); 2, 4, gonostylus in various aspects (holotype, Frolovka River, Primorye Territory, Russia); 3, 5–7, gonocoxite and gonostylus from Hokkaido, Japan (3, 5) and from Amur River basin, Russia (6–7). Scale bars: 50 µm.

FIGURES 12–17 in Morphological redescription and DNA barcoding of Linevitshia prima Makarchenko, 1987 (Diptera: Chironomidae: Diamesinae) from Amur River basin (Russian Far East), with notes on systematics of the genus

FIGURES 12–17. Larva of Protanypus sp. (12) and Linevitshia prima Makarchenko (13–17). 12, 13—head, in ventral view; 14, head, in dorsal view; 15, apical part of head setae; 16, branched head setae; 17, labrum. Scale bars: Figs. 15: 20 µm; Figs. 16–17: 50 µm. Fig. 12 after Oliver & Roussel (1983).

FIGURES 24–28 in Morphological redescription and DNA barcoding of Linevitshia prima Makarchenko, 1987 (Diptera: Chironomidae: Diamesinae) from Amur River basin (Russian Far East), with notes on systematics of the genus

FIGURES 24–28. Linevitshia prima Makarchenko, adult male (24–25), pupa (26) and larva (27–28). 24–25, hypopygium in dorsal view from Amur River basin (24) and Hokkaido (25); 26, abdomen of pupa in lateral view; 27, mentum and of premento-hypopharyngeal complex; 28, head in ventral view.

FIGURES 30–31 in A new species, Procloeon monilistylus sp. n. (Ephemeroptera, Baetidae), from the Russian Far East

FIGURES 30–31. Procloeon monilistylus sp. n., styliger and penis of male imago, ventral view (penis dotted, its hidden part shown by interrupted lines). 30, specimen from Ganukan, in projected condition (muscles not shown); 31, specimen from Kyia, penis in re4tracted condition (penial muscles and right gonostylar muscle shown by interrupted lines).

FIGURES 1–15 in A new species, Procloeon monilistylus sp. n. (Ephemeroptera, Baetidae), from the Russian Far East

FIGURES 1–15. Procloeon monilistylus sp. n., larva. 1–3, cercus and two portions of its distal part; 4, labrum; 5, right mandible; 6, left mandible; 7, maxillary palp; 8, labial palp; 9, paraproct and margin of tenth abdominal tergum; 10–15, tergalii of pairs I, II, IV, V, VI and VII.

FIGURES 16–22 in A new species, Procloeon monilistylus sp. n. (Ephemeroptera, Baetidae), from the Russian Far East

FIGURES 16–22. Procloeon monilistylus sp. n. 16, wing; 17, cuticle of larval terga, spread on slide (hypodermal pigmentation not shown); 18, abdominal terga of male imago, spread on slide; 19, cuticle of subimaginal postsubalar sclerite and lateropostnotal crest; 20, cuticle of subimaginal mesonotum, spread on slide; 21, larval claw; 22, larval fore leg.

FIGURES 23–29 in A new species, Procloeon monilistylus sp. n. (Ephemeroptera, Baetidae), from the Russian Far East

FIGURES 23–29. Procloeon monilistylus sp. n. 23, posterior margin of male larval abdominal sternum IX and subimaginal genitals developing under larval cuticle (right gonostylar muscle shown by interrupted lines); 24, genitals of male subimago, ventral view (imaginal gonostyli and gonostyli pedestals developing under subimaginal cuticle, shown by interrupted lines); 25, male imaginal abdominal sternum IX with styliger and gonostyli (unpaired sterno-styligeral muscle, pair of penial muscles and right gonostylar muscle shown by interrupted lines); 26, had and thorax of female imago, frontal view; 27, head of female imago, dorsal view; 28, head of male imago, dorsal view; head of male imago, lateral view.

FIGURES 30–33 in On taxonomy of Hydrobaenus Fries, 1830 (Diptera: Chironomidae: Orthocladiinae) from the Russian Far East, with a key to species

FIGURES 30–33. Hydrobaenus jacuticus Makarchenko et Makarchenko, male. 30—hypopygium in dorsal view (South Yakutia); 31–32—inferior volsellae (Amur River basin); 33—part of hypopyium in dorsal view (Kolyma River basin). Scale bars: Figs. 30–31, 33—50 µm; Fig. 32—20 µm.

FIGURES 10–18 in On taxonomy of Hydrobaenus Fries, 1830 (Diptera: Chironomidae: Orthocladiinae) from the Russian Far East, with a key to species

FIGURES 10–18. Hydrobaenus distinctus (Makarchenko et Makarchenko), pupa. 10–11, thoracic horn; 12, tergite II; 13–14, spinules in middle part of posterior shagreen of tergite II; 15, tergite V; 16, spinules of posterior shagreen of tergite V; 17, tergite VI; 18, spinules of posterior shagreen of tergite VI. Scale bars: Figs. 10–11—50 µm; Figs. 12, 15, 17—200 µm; Figs. 13–14, 16, 18—50 µm.