Find research datasets worth reusing

Fig. 12 H. itoi, nauplius 7 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 12 H. itoi, nauplius 7, ventral side (SEM) a General view, exuvium (rupture of naupliar cuticle for y-cypris release indicated by arrowheads). b Central part with legs and labrum (endopod segments numbered in Roman, exopod segments numbered in Arabic, pores of labrum indicated by asterisks). c Posterior part. d Posteriormost end. e Armament of antenna and mandible. f Putative rudiments of frontal filaments. g Tip of labrum. Abbreviations: a1 - antennules; a2 - antennae; ba - basis; co - coxa; dap - dorsal anal plate; dcs - dorsocaudal spine; ff? - putative rudiments of frontal filaments; fs - furcal spines; lb - labrum; md - mandible; vlr – ventrolateral cuticular ridges; vmr – ventromedial cuticular ridges. Scale bars in μm

Fig. 11 H. itoi, nauplius 7 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 11 H. itoi, nauplius 7, dorsal side (SEM) a General view. b Moulting into y-cypris stage. c Head shield, left side (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). d, e Posterior part of faciotrunk. f Dorsolateral view showing inner side of exuvium with 'ghost sling' of y-cypris (head shield removed). g Surface of 'ghost sling' showing delicate reticulated curicular membrane. Abbreviations: a1 - antennules; a2 - antennae; cy - y-cypris larva; dco - papilla of dorsocaudal organ; dcs - dorsocaudal spine; fs - furcal spines; gs - 'ghost sling' of y-cypris; md - mandible; n7ex - exuvium of nauplius 7; oe - cuticle of oesophagus. Scale bars in μm

Fig. 9 H. itoi, nauplius 5 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 9 H. itoi, nauplius 5, ventral side (SEM) a General view. b Left antenna and mandible (endopod segments numbered in Roman, exopod segments numbered in Arabic). c Right antennule. d Labrum (pores of labrum indicated by asterisks). e Posterior part (pores indicated by asterisks). Abbreviations: a1 - antennules; a2 - antennae; ba - basis; co - coxa; dcs - dorsocaudal spine; ff? - putative rudiments of frontal filaments; fs - furcal spines; lb - labrum; md - mandible; rmx1 - rudiments of maxillules; ob – oban; vlr – ventrolateral cuticular ridges; vmr – ventromedial cuticular ridges. Scale bars in μm

Fig. 8 H. itoi, nauplius 5 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 8 H. itoi, nauplius 5, dorsal side (SEM) a General view. b Anterior half (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). c Middle-posterior part of head shield, right side (pores without setae indicated by asterisks). d Posterior part of head shield (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). e Posterior part of faciotrunk. Abbreviations: bm - boundary of moult of faciotrunk; dco - papilla of dorsocaudal organ; dcs - dorsocaudal spine. Scale bars in μm

Fig. 6 H. itoi, nauplius 3 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 6 H. itoi, nauplius 3, ventral side (SEM) a General view. b Central area with labrum and naupliar legs (pores indicated by asterisk, segments of exopods numbered in Arabic, segments of endopods numbered in Roman). c Area around slit-like mouth opening (pores indicated by asterisks). d Posterior part (pore indicated by asterisk). e Anal region. Abbreviations: a1 - antennules; a2 - antennae; an - anus; ba - basis; co - coxa; dap - dorsal anal plate; dcs - dorsocaudal spine; ff? - putative rudiments of frontal filaments; fs - furcal spines; lb - labrum; md - mandible; mo - mouth opening; vlr – ventrolateral cuticular ridges; vmr – ventromedial cuticular ridges. Scale bars in μm

Fig. 5 H. itoi, nauplius 3 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 5 H. itoi, nauplius 3, dorsal and lateral sides (SEM) a General view, dorsal side. b Anterior half of head shield, dorsal view (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). c Central area of head shield around 'window plate' (W), dorsal view (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). d Posterior part of head shield, dorsal view. e Anterior part, lateral view (pores without setae indicated by asterisks). f Posterior part, lateral view (pore without setae indicated by asterisks). g Area around papilla of dorsocaudal organ, dorsal side. Abbreviations: dco - papilla of dorsocaudal organ; dcs - dorsocaudal spine; fs - furcal spines. Scale bars in μm

Fig. 4 H. itoi, nauplius 2 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 4 H. itoi, nauplius 2, ventral side (SEM) a General view. b Labrum, terminal papilla of labrum in lower right angle in rectangular area (pores of labrum indicated by asterisks). c Right naupliar limbs, segments of exopods numbered in Arabic, segments of endopods numbered in Roman. d Anteriormost end (pore indicated by asterisk). e Central area with labrum and naupliar limbs (pore indicated by asterisk, segments of endopods numbered in Roman). f Posteriormost end, posterioventral view (pores indicated be asterisks). g Pore on ventrlolateral cuticular ridge (vlr3) in posterior part (indicated by asterisk). Abbreviations: a1 - antennules; a2 - antennae; an - anus; ba - basis; bm - boundary of moult of faciotrunk; co - coxa; dcs - dorsocaudal spine; ff? - putative rudiments of frontal filaments; fs - furcal spines; lb - labrum; md - mandible; rmx1 - rudiments of maxillules; vlr – ventrolateral cuticular ridges; vmr – ventromedial cuticular ridges. Scale bars in μm

Fig. 3 H. itoi, nauplius 2 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 3 H. itoi, nauplius 2, dorsal side (SEM) a Just moulted, young nauplius with remnants of cuticle of nauplius 1 at posterior end, cuticular plates compressed, anterior end round; bent anteriormost end in upper right. b Mature nauplius with stretched cuticular plates, anterior end elongated. c Mature nauplius, dorsolateral view, pore without setae indicated by asterisks. d Central area of head shield around 'window plate' (W), setae in pores indicated by arrowheads, pores without setae indicated by asterisks. E Papilla of dorsocaudal organ. Abbreviations: bm - boundary of moult between head shield and faciotrunk; dco - papilla of dorsocaudal organ; dcs - dorsocaudal spine; n1-ev - shedding cuticle (exuvium) of nauplius 1. Scale bars in μm

Fig. 2 H. itoi, nauplius 1 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 2 H. itoi, nauplius 1, ventral side (SEM) a General view (cuticular folder with putative rudiments of frontal filaments from 'C' in rectangle area). b Labrum. c Putative rudiments of frontal filaments. d Right naupliar limbs, segments of exopods numbered in Arabic, segments of endopods numbered in Roman. e Posterior part, 5 transverse cuticular rows or combs of denticles corresponding to ventral cuticular ridges of hindbody in subsequent instars indicated by arrowheads. Abbreviations: a1 - antennules; a2 - antennae; ba - basis; co - coxa; dcs - dorsocaudal spine; ff? - putative rudiments of frontal filaments; fs - furcal spines; hb - hindbody; lb - labrum; md - mandible. Scale bars in μm

Fig. 13 Nauplii 1 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 13 Nauplii 1 of Ascothoracida (Sessilogoga captiva Kolbasov et al. 2020 from Taiwan) - a, b and Cirripedia (Balanus balanus (Linnaeus 1758) from the White Sea) - c-f; note absence of frontal filaments and vestiges of maxillules; smooth cuticle without developed sculpture and long setae; smooth labrum without pores and setae; limbs without distinct segmentation; half-formed feeding armament of limbs bearing shorter swimming setae and gnathobases; and short furcal and dorsocaudal spines a Ventral side of moulting nauplius 1, shedding cuticle (n1-ev) peeled away to reveal frontal filaments (ff) of second instar. b Lateral side, anterior cuticle of dorsal shield (n1-ev) peeled away to reveal wrinkled cuticle of second instar. c Dorsal side, note frontolateral horns pressed to the side. d Ventrolateral view from posterior end, note undeveloped gnathobases and small, slit- shaped mouth (mo). e Anterior side, note absence of frontal filaments. f Anterioventral view, shedding cuticle (n1-ev) peeled away to reveal frontal filaments (ff) of second instar. Abbreviations: a1 - antennule; a2 - antenna; dcs - dorsocaudal spine; ff - frontal filaments; fh - frontolateral horns; fs - furcal spines; lb - labrum; md - mandible; mo - mouth; n1-ev - shedding cuticle (exuvium) of nauplius 1. Scale bars in μm

Fig. 7 H. itoi, nauplius 4 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 7 H. itoi, nauplius 4, dorsal side (SEM). a General view. b Head shield (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). Abbreviations: dco - papilla of dorsocaudal organ; dcs - dorsocaudal spine. Scale bars in μm

Fig. 10 H. itoi, nauplius 6 in Naupliar development of Facetotecta (Crustacea: Thecostraca) and the nature of the first nauplius instar in the Crustacea - pro et contra the Hexanauplia concept

Fig. 10 H. itoi, nauplius 6, dorsal side (SEM) a General view. b Anterior part of head shield (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). c Posterior part of head shield, left side (setae in pores indicated by arrowheads, pores without setae indicated by asterisks). d Posterior part of faciotrunk. Abbreviations: bm - boundary of moult of faciotrunk; dco - papilla of dorsocaudal organ; dcs - dorsocaudal spine. Scale bars in μm

Figure 9 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 9 Parathalestris verrucosa Itô, 1970, female A habitus, dorsal B end of caudal rami C habitus, lateral. Scale bars indicate length in µm.

Figure 8 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 8 Diosaccus koreanus sp. nov., male A base of first thoracopod B second thoracopod C antennule D antennule segments 3–6. Scale bars indicate length in µm.

Figure 7 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 7 Diosaccus koreanus sp. nov., male A habitus, dorsal B caudal rami, dorsal C urosomites, lateral D fifth thoracopod E sixth thoracopod. Scale bars indicate length in µm.

Figure 5 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 5 Diosaccus koreanus sp. nov., female A third thoracopod B fourth thoracopod. Scale bars indicate length in µm.

Figure 4 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 4 Diosaccus koreanus sp. nov., female A first thoracopod B middle and distal endopods of first thoracopod C second thoracopod. Scale bars indicate length in µm.

Figure 3 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 3 Diosaccus koreanus sp. nov., female A mandible B maxillule C shape of elements in praecoxal arthrite of maxillule D maxilla E maxilliped. Scale bars indicate length in µm.

Figure 22 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 22 Peltidium quinquesetosum Song & Yun, 1999, male A antennule B first thoracapod C fifth thoracapod D sixth thoracapod. Scale bars indicate length in µm.

Figure 6 from: Lim B-J, Bang HW, Moon H, Back J (2020) Integrative description of Diosaccus koreanus sp. nov. (Hexanauplia, Harpacticoida, Miraciidae) and integrative information on further Korean species. ZooKeys 927: 1-35. https://doi.org/10.3897/zookeys.927.49042

Figure 6 Diosaccus koreanus sp. nov., female A sixth thoracopod and genital field B urosomites, ventral C fifth thoracopod. Scale bars indicate length in µm.