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Fig. 8. Cyclops lacustris G.O. Sars, 1863. A−B in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 8. Cyclops lacustris G.O. Sars, 1863. A−B. ♀. A. Leg 1, frontal (ZMO: lectotype designated herein). B. Leg 4, caudal – distal margin of the first and second exopodal segments bearing spinules on the frontal surface only (ZMO: Sars Coll. 12977 ♀-2). C−F. Ƌ. C. Anal somite and caudal rami, ventral (ZMO: Sars Coll. 12977 Ƌ-1). D. Urosomites 1̅4, ventral (ZMO: Sars Coll. 12977 Ƌ-1). E. Antennal coxobasis, caudal (ZMO: Sars Coll. 12976 Ƌ-1). F. Maxillulary palp (ZMO: Sars Coll. 12976 Ƌ-1). Scale bars = 100 µm.

Fig. 6 in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 6. Cyclops bohater Koźmiński, 1933, copepodid IV, ♀. A−C. Antennule, ventral. A. Segments 1̅5 (I̅XVI), arrow points to long anterodistal seta of ancestral segment XIV. B. Segments 6̅8 (XVII̅ XXIV). C. Segments 9̅10 (XXV̅XXVIII). D. Leg 2, caudal. E. Leg 3, caudal. All drawings show specimen from Latvia (Lake Brigene ̅ MIZ 2/2016/1). Scale bar = 100 µm.

Fig. 5 in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 5. Cyclops bohater Koźmiński, 1933, Ƌ. A. Maxillulary palp. B. Maxilliped syncoxopodite, frontal. C. Leg 1, frontal. D. Leg 2, slender spine of first exopodal segment and robust spines of exopodal segments 2 and 3. E. Exopodal armature of leg 3. F. Leg 4 coxopodite, basipodite and intercoxal sclerite, caudal. All drawings show a paralectotype (NHMUK 2016. 40). Scale bars = 100 µm.

Fig. 7. Cyclops lacustris G.O. Sars, 1863 in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 7. Cyclops lacustris G.O. Sars, 1863, ♀. A. Habitus, dorsal (SMNK: 9567). B−C. Urosome, ventral (Lake Aspern, Norway ̅ MIZ 2/2016/20). B. Urosomites 1̅4. C. Anal somite and caudal rami. D. Antennular segments 12̅17, ventral (Lake Aspern, Norway ̅ MIZ 2/2016/20). E−F. Antennal coxobasis, caudal. E. ♀ from Lake Mjøsa, Norway (ZMO: Sars Coll. 12977 ♀-2). F. ♀ from Lake Aspern, Norway (MIZ 2/2016/20). G−H. Maxillulary palp. G. ♀ from Lake Mjøsa, Norway (ZMO: Sars Coll. 12977 ♀-2). H. ♀ from Lake Aspern, Norway (MIZ 2/2016/20). Scale bars: A̅H = 100 µm.

Fig. 3 in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 3. Cyclops bohater Koźmiński, 1933, ♀. A. Maxilla, caudal. B. Maxilliped, frontal. C. Leg 1, frontal, arrows point to the long setules of the medial spine/seta of basipodite, and long spinules on the basipodite between the insertions of exopodite and endopodite. D−E. Leg 4: EXP, P4 exp 3; ENP, P4 enp3. All drawings show the lectotype (NHMUK 2016. 38). Scale bars: A̅E = 100 µm.

Fig. 2 in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 2. Cyclops bohater Koźmiński, 1933, ♀. A−B. Surface ornamentation of antennal coxobasis. A. Frontal, arrow points to insertion site of long spinules missing in C. bohater. B. Caudal, arrow points to a group of spinules sometimes present. C. Labrum, epistoma and rostrum. D. Mandible, frontal, arrow points to insertion site of spinules missing in C. bohater. E. Maxillulary palp, arrows point to long setules of the setae, and spinulose ornamentation of the palp. All drawings show the lectotype (NHMUK 2016.38). Scale bars: A̅E = 100 µm.

Fig. 1 in Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G.O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia

Fig. 1. Cyclops bohater Koźmiński, 1933, ♀. A. Habitus, dorsal. B. Pediger 5 and genital doublesomite, ventral, arrow points to lateral "wing-like" protrusion of pediger 5. C. Anal somite and caudal rami, dorsal. D−G. Antennule, ventral. D. Segments 1̅6 (I̅XIV). E. Segments 7̅14 (XV-XXIII). F. Segments 12̅14 (XXI̅XXIII). G. Segments 15̅17 (XXIV̅XXVIII). Except for A (NHMUK 2016. 39) all drawings show the lectotype (NHMUK 2016. 38). Scale bars: A = 1 mm; B̅G = 100 µm.

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FIG. 6 in Le poisson-cyclope d'Alexandre Neckam (De naturis rerum II, 24): entre vérité zoologique et réminiscences virgiliennes

FIG. 6. — Illustration de la tortue de mer dans le Der naturen bloeme de Jacob van Maerlant (La Haye, Koninklijke Bibliotheek, ms. KA 16, f. 1010v, c. 1350).

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Linked collectors and determiners for: Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G. O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia.

Natural history specimen data linked to collectors and determiners held within, "Redescription and taxonomic notes on Cyclops bohater Koźmiński, 1933 and Cyclops lacustris G. O. Sars, 1863 (Arthropoda, Crustacea), with an identification key to the Cyclops species of Fenno-Scandinavia". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/f53f4319-10c7-4617-a52d-75c46e8cc1dc">https://bionomia.net/dataset/f53f4319-10c7-4617-a52d-75c46e8cc1dc</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/f53f4319-10c7-4617-a52d-75c46e8cc1dc">https://gbif.org/dataset/f53f4319-10c7-4617-a52d-75c46e8cc1dc</a>. Formatted as a Frictionless Data package.

FIG. 13 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 13. — Setulation of the medial spine and ornamentation of the frontal surface of P1 basipodite, female; A, C. columbianus Lindberg, 1956 (Alaska, Karluk lake[?]); B, C. scutifer Sars, 1863 (Norway, Maridalsvann); C, C. heberti Einsle, 1996 (Germany, paratype). Scale bars: 50 µm.

FIG. 10 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 10. — Ornamentation of the frontal surface of the maxilliped syncoxopodite, female; A, Cyclops columbianus Lindberg, 1956 (Alaska, Karluk lake[?]); B, C. insignis Claus, 1857 (Norway, Frognertjern); C, C. canadensis Einsle, 1988 (Alaska, Chatanika); D, C. singularis Einsle, 1996 (Germany, paratype); E, C. kolensis Lilljeborg, 1901 (Poland, L. Wigry); F, C. alaskaensis Lindberg, 1956 (Alaska). Scale bars: 50 µm.

FIG. 7 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 7. — Ornamentation of the maxillular palp, and setulation of the palp setae, female; A, Cyclops strenuus Fischer, 1851 (Russia, Peterhof); B, C, C. canadensis Einsle, 1988; B, Alaska, Point Barrow; C, Alaska, Chatanika; D, C. abyssorum Sars, 1863 (Norway, Lønavatn); E, C. furcifer Claus, 1857 (Germany, Baden); F, C. singularis Einsle, 1996 (Germany, paratype). Scale bars: 50 µm.

FIG. 4 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 4. — Spinule ornamentation on the caudal surface of the antennal coxobasis, female; A-D, Cyclops strenuus Fischer, 1851; A, Russia, Peterhof; B, Norway, Frognertjern; C, Germany, Gottmadingen; D, Germany, Untersee, "C. strenuus landei" Koźmiński, 1933; E, C. abyssorum Sars, 1863 (Norway, Lønavatn); F, C. furcifer Claus, 1857 (Germany, Baden). Scale bars: 50 µm.

FIG. 3 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 3. — Interspecific variability of the aesthetasc on the ancestral XXI antennular segment, female; A, Cyclops singularis Einsle, 1996 (Germany, paratype); B, C, C. heberti Einsle, 1996; B, Poland, Wigry (Cyclops strenuus strenuus Fischer, 1851 sensu Koźmiński, 1933); C, Germany (paratype); D, C. insignis Claus, 1857 (Norway, Frognertjern); E, C. alaskaensis Lindberg, 1956 (Alaska); F, C. canadensis Einsle, 1988 (Alaska, Point Barrow); G, C. scutifer Sars, 1863 (Norway, Lønavatn). Scale bar: 50 µm.

FIG. 2 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 2. — Interspecific variability of the aesthetasc on the ancestral XXI antennular segment, female; A, Cyclops strenuus Fischer, 1851 (Russia, Peterhof); B, C. abyssorum Sars, 1863 (Norway, Lønavatn); C, D, C. furcifer Claus, 1857 (Germany, Baden); E, C. kolensis Lilljeborg, 1901 (Poland, L. Wigry); F, C. columbianus Lindberg, 1956 (Alaska, Karluk lake[?]). Scale bar: 50 µm.

FIG. 9 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 9. — Ornamentation of the frontal surface of the maxilliped syncoxopodite, female; A, Cyclops strenuus Fischer, 1851 (Russia, Peterhof); B, C, C. abyssorum Sars, 1863; B, Norway, Rockpool VS-XI; C, Norway, Lønavatn; D-F, C. heberti Einsle, 1996; D, Poland, Wigry (Cyclops strenuus strenuus Fischer, 1851 sensu Koźmiński, 1933); E, Germany, Oldenburg; F, Germany, paratype; G, C. scutifer Sars, 1863 (Norway, Maridalsvann). Scale bars: 50 µm.

FIG. 1 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 1. — Schematic representation of the antennular segmentation in the females of Cyclops O. F. Müller, 1776. Asterisks mark the aesthetascs on the ancestral XXI segment. Proximal is left.

FIG. 6 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 6. — Spinule ornamentation on the caudal surface of the antennal coxobasis, female; A, B, Cyclops singularis Einsle, 1996; A, Hungary, Tiszavasvári; B, Germany (paratype); C, D, C. alaskaensis Lindberg, 1956 (Alaska); E, F, C. kolensis Lilljeborg, 1901 (Poland, L. Wigry); G, H, C. canadensis Einsle, 1988 (Alaska, Point Barrow). Scale bars: 50 µm.

FIG. 8 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 8. — Ornamentation of the maxillular palp, and setulation of the palp setae, female; A, B, Cyclops heberti Einsle, 1996; A, Germany, paratype; B, Poland, Wigry (Cyclops strenuus strenuus Fischer, 1851 sensu Koźmiński, 1933); C, C. scutifer Sars, 1863 (Norway, Maridalsvann); D, C. columbianus Lindberg, 1956 (Alaska, Karluk lake[?]); E, C. kolensis Lilljeborg, 1901 (Poland, L. Wigry); F, C. alaskaensis Lindberg, 1956 (Alaska); G, C. insignis Claus, 1857 (Norway, Frognertjern). Scale bar: 50 µm.

FIG. 11 in New diagnostic microcharacters of the cephalothoracic appendages in Cyclops O. F. Müller, 1776 (Crustacea, Copepoda, Cyclopoida)

FIG. 11. — Setulation of the medial spine and ornamentation of the frontal surface of P1 basipodite, female; A, Cyclops strenuus Fischer, 1851 (Russia, Peterhof); B, C. insignis Claus, 1857 (Norway, Frognertjern); C, C. singularis Einsle, 1996 (Germany, paratype); D, C. canadensis Einsle, 1988 (Alaska, Point Barrow). Scale bars: 50 µm.