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469 results for “diagnostic characters”
FIGURE 2 in Revision of the diagnostic characters of two morphologically similar snook species Centropomus viridis and C. nigrescens (Carangiformes: Centropomidae)
FIGURE 2. Representation of the generalized morphology of Centropomus, indicating ten landmarks (black circles) and one semi-landmark (gray circle) on the position of the anatomical structures compared in this study.
Data from: Morphological and molecular diagnostic species characters of Staurozoa (Cnidaria) collected on the coast of Helgoland (German Bight, North Sea)
Scientific knowledge and records on staurozoans are limited probably because of their inconspicuous life habit and the small number of specialists for this taxon. To increase the awareness for Staurozoa, we identified morphological and molecular features of the three staurozoan species Haliclystus tenuis Kishinouye, 1910, Haliclystus auricula Clark, 1863, and Craterolophus convolvulus (Johnston, 1835) collected on the coast of the island Helgoland to evaluate their suitability as diagnostic characters. Useful macromorphological diagnostic features were the patterns of white spots of nematocysts and internal arm structures, whereas tentacle and gonad follicle numbers showed high intraspecific variations. Morphometric measurements on photographs of living specimens provided reliable data for interspecific comparisons. Comprehensive nematocyst analyses revealed interspecific shape differences of isorhizas and three types of rhopaloids, indicating that the staurozoan cnidome is more diverse than previously assumed. However, the taxonomic value of nematocyst analyses in Staurozoa remains unclear because comprehensive data is still lacking for most species. Comparative molecular genetic sequence analyses of mitochondrial 16S and COI and nuclear 18S ribosomal DNA identified the three species and confirmed their morphological identification. In comparison to published data, our analyses indicate similarities between H. auricula and Haliclystus antarcticus Pfeffer, 1889. Proteomic fingerprinting by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) differentiated all three species, suggesting that this technique could provide an alternative rapid identification method for staurozoans.
FIGURES 28–31. Superior volsella and digitus. 28 in Evaluation of diagnostic characters of the Tanytarsus chinyensis group (Diptera: Chironomidae), with description of a new species from Lapland
FIGURES 28–31. Superior volsella and digitus. 28: Tanytarsus chinyensis, 29: T. cretensis (according to Reiss 1987), 30: T. heusdensis, 31: T. palettaris.
FIGURES 19–27. Hypopygial volsellae. 19–21 in Evaluation of diagnostic characters of the Tanytarsus chinyensis group (Diptera: Chironomidae), with description of a new species from Lapland
FIGURES 19–27. Hypopygial volsellae. 19–21: superior volsella and digitus, 22–24: median volsella and inner margin of coxite, 25–27: inferior volsella. 19, 22, 25: Tanytarsus brundini; 20, 23, 26: T. curticornis; 21, 24, 27: T. salmelai sp. n.
FIGURES 5–18 in Evaluation of diagnostic characters of the Tanytarsus chinyensis group (Diptera: Chironomidae), with description of a new species from Lapland
FIGURES 5–18. Variability in hypopygial anal point. 5–9: Tanytarsus brundini, 10–14: T. curticornis, 15–18: T. salmelai sp. n.
FIGURES 30–36 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 30–36. Monodontocerus mulunensis sp. nov.: 30, mandible; 31, maxillary lamella 5; 32, tibiotarsus; 33, tibiotarsal distal chaetae; 34, pattern of tibiotarsal distal chaetae (distal view); 35, claw; 36, tenaculum. Scale bar: 30, 33, 35, 36, 50Μm; 31, 20Μm; 32, 200Μm.
FIGURES 54–59 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 54–59. Dorsal cephalic and body chaetotaxy: 54 & 57, M. absens sp. nov.; 55 & 58, M. mulunensis sp. nov.; 56 & 59, M. trigrandis sp. nov. Large circle: macrochaeta; small circle: mesochaeta; wavy line: bothriotricha; s: normal s-chaeta; ms: s-microchaeta; rs: rod-like s-chaeta on body; circle with a slash: pseudopore.
FIGURES 41–48 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 41–48. Monodontocerus trigrandis sp. nov.: 41, labrum; 42, mandible; 43, maxillary lamella 5; 44, tibiotarsus; 45, tibiotarsal distal chaetae; 46, pattern of tibiotarsal distal chaetae (distal view); 47, dorsal view of claw; 48, lateral view of claw. Scale bar: 41, 47, 48, 100Μm; 42, 50Μm; 43, 15Μm; 44, 45, 20Μm.
FIGURES 23–29 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 23–29. Monodontocerus absens sp. nov.: 23, manubrium ("T" shaped marks: sockets of scales; circle with a slash: pseudopore); 24, disto-external corner of manubrium and corner chaeta; 25, dental spines; 26, feathered dental chaeta; 27, mucro, apical tooth hypothesized; 28, mature female genital plate; 29, immature female genital plate. Scale bar: 23, 25, 100Μm; 24, 26–29, 50Μm.
FIGURES 15–22 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 15–22. Monodontocerus absens sp. nov.: 15, labial chaetotaxy; 16, trochanteral-femoral organ; 17, femur and tibiotarsus; 18, dorsal view of tibiotarsal distal chaetae on front leg (TH: tenent hair, the same below); 19, anterior view of tibiotarsal distal chaetae on hind leg; 20, pattern of tibiotarsal distal chaetae (hind leg, distal view); 21, claw; 22, tenaculum. Scale bar: 15, 19, 21, 22, 50Μm; 16, 120Μm; 17, 200Μm; 18, 40Μm.
FIGURES 6–14 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 6–14. Monodontocerus absens sp. nov.: 6–9, dorsal side of antenna. 6, one distal subsegment of Ant. III; 7, most distal part of Ant. III; 8, one middle subsegment of Ant. IV; 9, apex of Ant. IV; 10, labrum; 11, mandible; 12, maxillary lamella 5; 13, maxillary outer lobe; 14, labial palp (papillae A–E and H labeled). Scale bar: 6–9, 12, 14, 20Μm; 10, 11, 13, 50Μm.
FIGURES 1–5. 1–3 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 1–5. 1–3, Monodontocerus absens sp. nov. 1, habitus; 2, spotted pigmentation on Abd. III; 3, head, arrows pointing to the pigmented sockets of cephalic posterior macrochaetae; 4, habitus of M. mulunensis sp. nov.; 5, habitus of M. trigrandis sp. nov. Scale bar: 1, 200Μm; 2, 3, 25Μm; 4, 5, 100Μm.
FIGURES 37–40 in New species of Monodontocerus (Collembola: Tomoceridae) from southern China with diagnostic notes on the genus and introduction of new taxonomic characters
FIGURES 37–40. Monodontocerus mulunensis sp. nov.: 37, manubrium (circle with a slash: pseudopore); 38, disto-external corner of manubrium and corner chaeta; 39, dental spines; 40, mucro. Scale bar: 37, 39, 40, 100Μm; 38, 50Μm.
FIGURE 3 in The occurrence of Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000 (Crustacea: Decapoda: Caridea: Pandalidae) in Hokkaido, northern Japan, and reassessment of its diagnostic characters
FIGURE 3. Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000, ovigerous female (cl 42.6 mm), AMF-ZC00003. Left thoracic appendages. A, third maxilliped, lateral view; B, same, distal part of ultimate segment, ventral view; C, first pereopod, lateral view; D, second pereopod, lateral view; E, third pereopod, lateral view; F, same, dactyl and propodus, lateral view; G, fourth pereopod, lateral view; H, same, dactyl and propodus, lateral view; I, same, dactyl, lateral view; J, fifth pereopod, lateral view; K, same, dactyl and propodus, lateral view; L, same, dactyl, lateral view. Scale bars: 10mm for A, C, D, E, G, J; 5mm for F, H, K; 1mm for B, I, L.
FIGURE 2 in The occurrence of Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000 (Crustacea: Decapoda: Caridea: Pandalidae) in Hokkaido, northern Japan, and reassessment of its diagnostic characters
FIGURE 2. Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000, ovigerous female (cl 42.6 mm), AMF-ZC00003. A, carapace and cephalic appendages, lateral view; B, rostrum, lateral view (setae omitted); C, third to sixth pleomeres, lateral view; D, left eye, antennule and antenna, dorsal view (antennular flagella partially omitted); E, distal part of antennal scale, ventral view; F, telson, dorsal view; G, endopod of left first pleopod, ventral view; H, appendices interna and masculina of right second pleopod. Scale bars: 10mm for A–C; 5mm for D, F; 2 mm for E, G; 1 mm for H.
FIGURE 5. A in The occurrence of Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000 (Crustacea: Decapoda: Caridea: Pandalidae) in Hokkaido, northern Japan, and reassessment of its diagnostic characters
FIGURE 5. A, Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000. A, ovigerous female reared in aquarium (not preserved), showing colour in life; B, Pandalopsis coccinata Urita, 1941, ovigerous female (cl 37.0 mm), AMF-ZC00004, lateral view, showing colour in fresh (unfreeze).
FIGURE 1 in The occurrence of Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000 (Crustacea: Decapoda: Caridea: Pandalidae) in Hokkaido, northern Japan, and reassessment of its diagnostic characters
FIGURE 1. Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000, female (cl 40.0 mm), AMF-ZC00003, habitus in lateral view.
FIGURE 4. A–C in The occurrence of Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000 (Crustacea: Decapoda: Caridea: Pandalidae) in Hokkaido, northern Japan, and reassessment of its diagnostic characters
FIGURE 4. A–C, Pandalopsis spinosior Hanamura, Kohno & Sakaji, 2000, ovigerous female (cl 42.6 mm), AMF-ZC00003. D–F, Pandalopsis coccinata Urita, 1941, AMF-ZC00004. A, D, dactylus of third pereopod, lateral view; B, E, same, proximal part of pereopod, mesial view; C, F, same, carpus, mesial view. Scale bars: 5mm for B–F; 1mm for A, D.
FIGURE 7. Metallesthes diagnostic and sexual characters. A, B in Revision of the genus Metallesthes Kraatz and description of Metallesthes anneliesae, a new species of Cetoniinae (Coleoptera: Scarabaeidae) from Queensland and New South Wales, Australia
FIGURE 7. Metallesthes diagnostic and sexual characters. A, B—sternital impression (A—males of all species; B—females of all species); C, D—metatibia apex (C—males of all species; D—females of all species); E, F—metatibia row of cilia (E—males of M. metallescens; F—males of M. anneliesae and M. unicolor); G, H—sclerotised patch on phallobase (G—males of M. metallescens; H—males of M. anneliesae and M. unicolor); I, J—proclaw symmetry (I—males of M. metallescens; J—both sexes of M. anneliesae and M. unicolor); K, L—dorsal visibility of sternites (K—both sexes of M. anneliesae; L—both sexes of M. metallescens and M. unicolor); M, N—apical pilosity (M—females of M. metallescens; N—females of M. unicolor); O, P—head shape (O—both sexes of M. anneliesae; P—both sexes of M. metallescens and M. unicolor). Grey shading and arrows emphasise diagnostic characters.
FIGURES 3–8. Athacryvac, subgenus diagnostic characters. 3 in Eleven new species of Athacryvac Braet & van Achterberg from the Neotropical Region (Hymenoptera, Braconidae, Rogadinae)
FIGURES 3–8. Athacryvac, subgenus diagnostic characters. 3, head lateral, Aleiodes (Athacryvac) alternatus Braet & van Achterberg, ♀, arrow indicating end of occipital carina apart from hypostomal carina; 4, Aleiodes (Athacryvac) paradoxus Shimbori & Penteado-Dias sp. nov., ♀ paratype, arrow indicating division between flagellomeres and ovals indicating missing divisions (i.e. fused segments); 5, A. (A.) alternatus, metasomal terga 1+2 and hind coxa, dorsal; 6–7, Aleiodes (Athacryvac) fuscatus Braet & van Achterberg, ♂: 6, mepleuron, lateral/ventral; 7, inner side of right hind tibia with apical comb of flattened setae; 8, A. (A.) fuscatus, ♀, terminalia, arrow indicating acute projection on ovipositor sheath.
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Allen Brain Atlas
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International Brain Laboratory public data
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OpenNeuro
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