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Heptagenia Stock Photos and Images
RM2WRD5X6–Schwefelgelbe Eintagsfliege, Gelbe Eintagsfliege, Schwefel-Aderhaft, Eintagsfliege, Subimago, Weibchen, Heptagenia sulphurea, Yellow May, Yellow mayfl
RMBE9RED–Dusky yellowstreak mayfly (Heptagenia lateralis : Heptageniidae), female landing to lay eggs on surface of stream uk
RF2T0FEM4–Heptagenia sulphurea Yellow May dun mayfly wild nature insect photography, picture, wallpaper
RM2PR7KCJ–Legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RM2F35R1G–YELLOW MAYFLY nymph Heptagenia sulphura In fast flowing water, River Moy, Castledawson. April, Credit:Robert Thompson / Avalon
RMW249HR–Archive image from page 220 of Danmarks fauna; illustrerede haandbøger over. Danmarks fauna; illustrerede haandbøger over den danske dyreverden.. danmarksfaunaill71dans Year: 1907 i A / '- 4mJ iååJ -<'. 'Pi ' fevvH tci M mK i 'i=' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.
RM2ANDJMC–A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist . ng the buccal cavity. In the Odonata the lingua is a small, rounded lobe, as also in theEphemeridee; in the nymph, however, of Heptagenia (Fig. 72) it is highly developed, accordingto Vayssiere, who seems in-clined to regard it as repre-senting a pair of appendages.The tongue in Hemiptera issaid by Leon to be present inBenacus griseus (Say) and tocorrespond to the subgalea of FIG. 72. — Lingua
![. Danmarks fauna; illustrerede haandbøger over den danske dyreverden... i . A / '- ^4mJ iååJ -<^'^. ^'Pi ' fe^vvH tc^i M mK ^ i "i^=^^!^' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Dansk naturhistorisk forening. København, G. E. Stock Photo](https://c8.alamy.com/comp/PFHCPB/danmarks-fauna-illustrerede-haandbger-over-den-danske-dyreverden-i-a-4mj-ij-lt-pi-fevvh-tci-m-mk-i-quoti=!-f-1-fig-79-dgnfluelarver-a-batis-sp-b-ephemera-vulgata-g-si-phlonurus-aestivalis-d-heptagenia-sulphurea-e-ephemerella-ignita-f-leptophlebia-vespertina-g-caenis-sp-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-dansk-naturhistorisk-forening-kbenhavn-g-e-PFHCPB.jpg ". Danmarks fauna; illustrerede haandbøger over den danske dyreverden... i . A / '- ^4mJ iååJ -<^'^. ^'Pi ' fe^vvH tc^i M mK ^ i "i^=^^!^' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Dansk naturhistorisk forening. København, G. E. Stock Photo")
RMPFHCPB–. Danmarks fauna; illustrerede haandbøger over den danske dyreverden... i . A / '- ^4mJ iååJ -<^'^. ^'Pi ' fe^vvH tc^i M mK ^ i "i^=^^!^' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Dansk naturhistorisk forening. København, G. E.
RMMA7088–. Elementary lessons on insects . Fig. 22.—The flat nymph of the mayfly Heptagenia eltgantula. Drawing by Elsie Broughton.
RM2WRD5Y0–Schwefelgelbe Eintagsfliege, Gelbe Eintagsfliege, Schwefel-Aderhaft, Eintagsfliege, Subimago, Weibchen, Heptagenia sulphurea, Yellow May, Yellow mayfl
RM2PR7KAC–Legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RM2PXXCD4–Head and legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RM2PR7KJ2–Head and eyes of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RM2CGGJJK–. Contributions to Canadian biology . ^ Q. * to • ^ T +- <0 u 3 o ■^ n: •- ■i^ ^ u -1 -i T ^ <* ., T r. « . ••» ■>• 5 In •*^ «3 V) tn d r j; (/I u c ■ — fi C) 4J u-D (ri E rf M a d «3 -4.c o > uj -a Q C* -Q rt 1- >- f^J :j 3 «. 3 3 o u — — «J C D a fr c L y X a. o Stl o CO C a fcC 5 GEORGE V. SESSIONAL PAPER No. 39b A. 1915 V. LIFE-HISTORIES OF GEORGIAN BAY EPHEMERIDAE OFTHE GENUS HEPTAGENIA. By W. A. Clemens, B.A., University of Toronto. (Plates XV—XVIII, and 1 figure in the text) In the preceding paper on the mayflies or Ephemeridae of Georgian Bay, theconsideration of th
RMRWNK0A–Elementary lessons on insects (1928) Elementary lessons on insects elementarylesson00need Year: 1928 EPHEMERIDA 63 Fig. 22.—The flat nymph of the mayfly Heptagenia eltgantula. Drawing by Elsie Broughton.
RM2PR7M10–Abdomen and gills of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RMRHK53W–. The biology of insects. Insects -- Biology. Fig. 79.—a, mandible {m, molar area) ; h, hypopharynx (Ji) and superlinguae {$) of Mayfly Larva {Heptagenia). X 12. After Vayssiere {Ann. Sci. Nat. Zool. xiii. 18S2). c, mandible; d, hypopharynx and superlinguae (the left superlingua displaced) of Bristle-tail (Petrobius). X 30. e, mandible ; /, hypopharynx and paragnaths (p); and g, maxil- lula of Isopod Crustacean (Ligia). X 12. After G. O. Sars (Crustacea of Norzmy, ij, 1899).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabil
RM2PR7M8P–Head and legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RMRGWCA5–. Bulletin. Natural history; Natural history. 381. Fig. 375.—Heptagenia hebe, male genitalia. Fig. 376. — Heptagenia maculipenn'ts, male genitalia. Fig. 377.—Heptagenia ivalshi, male genitalia. Fig. 378.—Heptagenia juno, male genitalia. Fig. 379.—Heptagenia minerva, male genitalia. Fig. 380.—Heptagenia aphrodite, male geni- talia. Fig. 381.—Heptagenia macitlipennis, middle tarsal claw of mature nymph. Fig. 382.—Heptagenia diabasia, middle tar- sal claw of mature nymph.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability -
RM2PR7MEC–Abdomen and gills of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
![. Annals of the Entomological Society of America. Entomology. 1912] Homologies in the Wing-veins of May-flies 103 In the wing-pads figured in PI. VIII, there is a gradual reduction of the main trachea in the front of the wing. This is shown first in Heptagenia (PI. VIII, Fig. 45) where the base of the subcostal trachea has apparently fused with the radial trachea, later by its total obliteration, (PL VIII, Fig. 51). In all of these except Callibastis the Sc has been the only vein to dis- appear (PI. VIII, Figs. 46, 48, 50, 54). Between Mi and Ma there are several accessory veins which are gene Stock Photo](https://c8.alamy.com/comp/RMPCYK/annals-of-the-entomological-society-of-america-entomology-1912-homologies-in-the-wing-veins-of-may-flies-103-in-the-wing-pads-figured-in-pi-viii-there-is-a-gradual-reduction-of-the-main-trachea-in-the-front-of-the-wing-this-is-shown-first-in-heptagenia-pi-viii-fig-45-where-the-base-of-the-subcostal-trachea-has-apparently-fused-with-the-radial-trachea-later-by-its-total-obliteration-pl-viii-fig-51-in-all-of-these-except-callibastis-the-sc-has-been-the-only-vein-to-dis-appear-pi-viii-figs-46-48-50-54-between-mi-and-ma-there-are-several-accessory-veins-which-are-gene-RMPCYK.jpg ". Annals of the Entomological Society of America. Entomology. 1912] Homologies in the Wing-veins of May-flies 103 In the wing-pads figured in PI. VIII, there is a gradual reduction of the main trachea in the front of the wing. This is shown first in Heptagenia (PI. VIII, Fig. 45) where the base of the subcostal trachea has apparently fused with the radial trachea, later by its total obliteration, (PL VIII, Fig. 51). In all of these except Callibastis the Sc has been the only vein to dis- appear (PI. VIII, Figs. 46, 48, 50, 54). Between Mi and Ma there are several accessory veins which are gene Stock Photo")
RMRMPCYK–. Annals of the Entomological Society of America. Entomology. 1912] Homologies in the Wing-veins of May-flies 103 In the wing-pads figured in PI. VIII, there is a gradual reduction of the main trachea in the front of the wing. This is shown first in Heptagenia (PI. VIII, Fig. 45) where the base of the subcostal trachea has apparently fused with the radial trachea, later by its total obliteration, (PL VIII, Fig. 51). In all of these except Callibastis the Sc has been the only vein to dis- appear (PI. VIII, Figs. 46, 48, 50, 54). Between Mi and Ma there are several accessory veins which are gene
RM2PR7M4N–Head and legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RMRG31EJ–. The Canadian entomologist. Insects; Entomology. THE CANADIAN ENTOMOLOGIST. 201 H. vicar ins Walk, Is a large dark species, with deeply-marked venation, and the tips of hind wings in both sexes and in the subimago rather broadly infuscated. H. verticis Say. Is a large, rather dark species, with a dark median stripe on the notum; sometimes there is a faint dash under the bulla, as in H. Canadetisis. Heptagenia luridipermis Burm. Male: brownish; notum rich brown j dorsum of abdomen brownish ; two approximate submedian streaks, a lateral streak, and hind margin of each segment darker; setse pale
RM2PR7KR1–Head and legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RM2PXXC7B–Head, gills and legs of Yellow may dun Heptagenia sulphurea photographed in cross-polarised light with a wave retarder
RMRG31DN–. The Canadian entomologist. Insects; Entomology. Fig. 14.—Heptagenia luridipennis, male forceps and last dorsal segment.. Fig. 15.—Epeorus pleiiralis, male forceps and middle appendages from side. Heptagenia (Epeorus) pleuralis, n. sp. Pale reddish-brown above, paler beneath ; each side from base of fore wing forward is a furcate white streak, other smaller white streaks and spots on the pleura ; legs pale brownish, a prominent black spot on under side of each femur, a little before the middle ; setae long, brown, joinings. Please note that these images are extracted from scanned page images
RMRGWCKK–. Bulletin. Natural history; Natural history. May, 1953 Burks: The Mayflies of Illinois 153 10. 11. Stigmatic area of fore wing with an ir- regular, longitudinal line dividing the stigmatic crossveins into two rows of cellules, fig. 322 45. Cinygma Stigmatic area of fore wing not divided into two rows of cellules, fig. 318, al- though the crossveins are often partly or greatly anastomosed 7 12. width of each less than one-third the length 41. Stenonema Small subapical spine absent; large mesal spines robust, greatest width of each more than one-third the length, fig. 363 42. Heptagenia Small,
![. Danmarks fauna; illustrerede haandbøger over den danske dyreverden... i . A / '- ^4mJ iååJ -<^'^. ^'Pi ' fe^vvH tc^i M mK ^ i "i^=^^!^' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Dansk naturhistorisk forening. København, G. E. Stock Photo](https://c8.alamy.com/comp/RD41W4/danmarks-fauna-illustrerede-haandbger-over-den-danske-dyreverden-i-a-4mj-ij-lt-pi-fevvh-tci-m-mk-i-quoti=!-f-1-fig-79-dgnfluelarver-a-batis-sp-b-ephemera-vulgata-g-si-phlonurus-aestivalis-d-heptagenia-sulphurea-e-ephemerella-ignita-f-leptophlebia-vespertina-g-caenis-sp-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-dansk-naturhistorisk-forening-kbenhavn-g-e-RD41W4.jpg ". Danmarks fauna; illustrerede haandbøger over den danske dyreverden... i . A / '- ^4mJ iååJ -<^'^. ^'Pi ' fe^vvH tc^i M mK ^ i "i^=^^!^' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Dansk naturhistorisk forening. København, G. E. Stock Photo")
RMRD41W4–. Danmarks fauna; illustrerede haandbøger over den danske dyreverden... i . A / '- ^4mJ iååJ -<^'^. ^'Pi ' fe^vvH tc^i M mK ^ i "i^=^^!^' F / / 1 Fig. 79. Døgnfluelarver. A Baétis sp.; B Ephemera vulgata; G Si- phlonurus aestivalis; D Heptagenia sulphurea; E Ephemerella ignita; F Leptophlebia vespertina; G Caenis sp.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Dansk naturhistorisk forening. København, G. E.
RMRG31F9–. The Canadian entomologist. Insects; Entomology. THE CANADIAN ENTOMOLOGIST. 199 the tip; venation brown, none of the veins margined, basal costal cross- vein wholly pale; last dorsal segment of abdomen with two narrow parallel depressions above. Legs pale, femora a little darker at tips, not in middle. In the male the basal joint of tarsus I is shorter than the fifth. Length, lo mm. From Glencarlyn, Va., July 23 ; Harrisburg, Penna., Wetzel's Swamp, Oct. 2, and Great Falls, Va., June 18, ^. Heptagenia placita, n. sp. Male : Head pale, a transverse dark band on vertex; notum rich brown; pleura
RMRGWC8G–. Bulletin. Natural history; Natural history. 190 Illinois Natural History Survey Bulletin Vol. 26, Art. 1. Fig. 385. — Heptagenia perfida, mature nymph, dorsal aspect. orange shading. Thorax dull brown dor- sally, light yellow ventrally. Abdomen dull brown dorsally, darker at posterior margins of tergites, sternites light yellow; posterior margin of terminal sternite produced and truncate on meson; caudal filaments light yellow, basal articulations tan. Nymph.—Fig. 385. Length of body 6-8 mm. Head slightly wider than thorax, dor- sal side of head brown, with a pair of sub- mesal, white spots
RMRGWCBX–. Bulletin. Natural history; Natural history. 182 Illinois Natural History Survey Bulletin Vol. 26, Art. 1. LUCIOIPENNIS Fig. idi.—Ueptagcnia persimplex, male geni- Fig. 369.—Heptagenia cruentata, male geni- talia, talia. Fig. 364.—Heptagenia diabasia, male genitalia. Fig. 370.—Heptagenia rusticalis, male geni- Fig. 365.—Heptagenia pulla, male genitalia. talia. Fig. 366.—Heptagenia marginalis, male geni- Fig. 371.—Heptagenia inconspicua, male gen- talia. italia. Fig. 367.—Heptagenia patoka, male genitalia. Fig. 372.—Heptagenia lucidipennis, male gen- Fig. 368.—Heptagenia flavescens, male geni-
RMRHFWCY–. Boletín de la Sociedad entomológica de España. Entomology; Insects. Fjg. 4 Heptagenia flavata Nav. Ala anterior (Col. m.) 11. Rhithrogena loyolaea sp. nov, (fig. 5). Caput inferné fuscum, superne fusco-nigrum; oculis in sicco nigris, antennis seiisim attenuatis, fuscis, apicem versus pallescentibus. Thorax inferné fuscus, nitens, superne piceus, nitens. Abdomen inferné fulvum, superne ferrugineum, margine postico segmentorum fusco; ultimo tergito postice convexo, acuato; ultimo sternito (fig. 5, a) arcuato emarginato; lobis. Fig. 5. Rbithrogena loyoleea ¡^ Nav. a. Extremo del abdomen visto p
RMRGFD8P–. Bulletin of the Lloyd Library of Botany, Pharmacy and Materia Medica. Botany; Pharmacy; Entomology; Fungi. MOUTH PARTS OF THE NYMPH. Text-figure I.. Types of May-fly Mandible. 1. Baetisca, molar surface removed. 2. Lep- tophlebia, molar surface removed. 3. Siphlurus, molar surface removed. 4. Epeorus, inner canine. 5. Heptagenia, outer canine. 6. Ecdyurus, outer canine. 7. Epeorus, outer canine. 8. Caenis, all tips removed. 9. Calli- baetis, molar surface removed. 10. Blasturus, molar surface removed. 11. Iron, outer canine. 12. Pentagenia. 13. Tricorythus, molar surface removed. 14. Hexagen
RMRHFWDA–. Boletín de la Sociedad entomológica de España. Entomology; Insects. 62 BOLETÍN DE LA SOCIEDAD (9). Fjg. 4 Heptagenia flavata Nav. Ala anterior (Col. m.) 11. Rhithrogena loyolaea sp. nov, (fig. 5). Caput inferné fuscum, superne fusco-nigrum; oculis in sicco nigris, antennis seiisim attenuatis, fuscis, apicem versus pallescentibus. Thorax inferné fuscus, nitens, superne piceus, nitens. Abdomen inferné fulvum, superne ferrugineum, margine postico segmentorum fusco; ultimo tergito postice convexo, acuato; ultimo sternito (fig. 5, a) arcuato emarginato; lobis. Please note that these images are ex
RMRMBCN7–. Annual report. New York State Museum; Science -- New York (State); Plants -- New York (State); Animals -- New York (State). Fig. 12 Labra of nymphs of Hepta- geninae; h, of IronspV from Coy Glen, Ithaca; i, of Rhithrogcua elegan- tula Etn. V; j, of Ecdyurus maculi- pennis Walsh; k, of Heptagonia interpunctata Say. Fig. 13 Mandibles of nymplis of Hepta- geuinae; c, of Rhithrogena elegan- tula Etn. 'i d, of Iron spV from Coy Glen, Ithaca; e, of Ecdyurus maculi- pennis Walsh; f, of Heptagenia interpunctata Say alcoholic specimens by a longitudinal snip with a pair of fine scissors. They may th
RMRGWE69–. Bulletin. Natural history; Natural history. Mav. 1953 Burks: The Mayflies of Illinois 23 f^^ ^=^^^=^. Fig. 11.—Caenis simulans, hind leg of adult male. Fig. 12.—Brachycerciis lacustris, hind leg of adult male. Fig. 13.—Tricorythodes atratus, hind leg of adult male. Fig. 14.—Neoephemera purpurea, hind leg of adult male. Fig. 15.—Callibaetis fluctuans, hind leg of adult male. Fig. 16.—Ephemerella needhami, hind leg of adult male. Fig. 17.—Stenonema pulchellum, hind leg of adult male. FijJ. 18.—Isonychia sicca, hind leg of adult male.. Fig. 19.—Heptagenia sp., hind leg of adult female. Fig. 20.
RMRN2MJG–. Annales de biologie lacustre. Natural history; Freshwater animals; Freshwater plants; Lakes. — 92 — gauche pourvue de 2 canines nettement dissemblables : l'externe robuste, grande, serrulée latéralement et au som- met; l'interne plus courte, plus grêle, offrant à sa terminaison des denticulations inégales dont l'une est proportionnelle-. FiG. 2. — Larve de Heptagenia sulphurea Muli.. = larve: b = labre; c = mandibule gauche; d = mandibule droite; e = maxille; /= labium; g = branchie de la iie paire; h = branchie de la 3e paire; i = de la 5e paire (coll. Petersen). ment très grande et spinifo
RMRGK4AY–. Bulletin - New York State Museum. Science. Fig. 12 Labra of nymphs of Hepta- geninae ; h, of I r o n sp ? from Coy Glen, Ithaca; i, of Rhithrogena elegan- tula Etn.?; j, of Ecdyurus maculi- pennis Walsh; k, of Heptagenia interpunctata Say. Fig. 13 Mandibles of nymphs of Hepta- geninae; c, of Rhithrogena elegan- tula Etn, ?; d, of Iron sp? from Coy Glen, Ithaca; e, of Ecdyurus maculi- pennis Walsh; f, of Heptagenia interpunctata Say alcoholic specimens by a longitudinal snip with a pair of fine scissors. They may then be permanently mounted on a slide as microscopic preparations so as to give
RMRHFWDW–. Boletín de la Sociedad entomológica de España. Entomology; Insects. (8) ENTOMOLÓGICA DE ESPAÑA 61 Según Ulmcr (Uebersicht übcr die Gattungcn der Ephe- meropteren, Stctt. Entom. Zcit. 1920), el tarso posterior de la 9 ^s sólo '/s de la longitud de la tibia, contra lo que in- dica Eaton-al establecer el género; esas mismas propor- ciones ofrece mi ejemplar. 10. Heptagenia flavata sp. nov. (fig. 3, 4). Similis chinensi Ulm. Imago. Corpus fulvum, nigro pictum. Caput oculis in sicco nigris. Prothorax transversus, postice emarginatus, superne fusco-niger. Thorax fulvus, inferné pallidus, superne o
RMRD0B38–. Elementary lessons on insects. Insects. EPHEMERIDA 63. Fig. 22.—The flat nymph of the mayfly Heptagenia eltgantula. Drawing by Elsie Broughton.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Needham, James G. (James George), 1868-1956. Springfield, Ill. , Baltimore, Maryland, C. C. Thomas
Search Results for Heptagenia Stock Photos and Images (55)
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