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776 results for “Hermit crabs”
Figure 2 in Two New Amphipods Associated with a Hermit Crab from the Kumano-nada, Central Japan (Crustacea: Amphipoda: Isaeidae, Stenothoidae)
Figure 2. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498. Scale bars = 0.04 mm.
Figure 5 in Two New Amphipods Associated with a Hermit Crab from the Kumano-nada, Central Japan (Crustacea: Amphipoda: Isaeidae, Stenothoidae)
Figure 5. Metopelloides lowryi sp. nov., holotype male, 4.3 mm, OMNH-Ar-12498, photographed immediately after fixation, T. Moritaki.
Fig. 4. Diogenes kombalensis, new species. A in Two new hermit crab species of the genus Diogenes Dana, 1851 from Lombok Island, Indonesia (Crustacea: Decapoda: Anomura: Diogenidae)
Fig. 4. Diogenes kombalensis, new species. A, holotype, male 3.3 mm (MZB Cru 5757); B, paratype, ovigerous female, 2.8 mm (MZB Cru 5759); C, paratype, male, 3.6 mm (ZRC 2023.0673).
Fig. 3 in Two new hermit crab species of the genus Diogenes Dana, 1851 from Lombok Island, Indonesia (Crustacea: Decapoda: Anomura: Diogenidae)
Fig. 3. Diogenes luteus, new species, holotype, male, 2.2 mm (MZB Cru 5754). A, left pereopod 2, lateral view; B, left pereopod 3, lateral view. Scales = 1 mm. Setae partially omitted.
Fig. 1. A in Two new hermit crab species of the genus Diogenes Dana, 1851 from Lombok Island, Indonesia (Crustacea: Decapoda: Anomura: Diogenidae)
Fig. 1. A, Diogenes takedai Rahayu, 2012 (not measured and sexed); B, Diogenes luteus, new species, holotype, male 2.2 mm (MZB Cru 5754); C, Diogenes luteus, new species, paratype, ovigerous female, 1.6 mm (ZRC 2023.0671); D, Diogenes luteus, new species, paratype, male, 2.5 mm (MZB Cru 5755).
Fig. 6 in Two new hermit crab species of the genus Diogenes Dana, 1851 from Lombok Island, Indonesia (Crustacea: Decapoda: Anomura: Diogenidae)
Fig. 6. Diogenes kombalensis, new species, holotype, male, 3.5 mm (MZB Cru 5757). A, left pereopod 2, lateral view; B, left pereopod 3, lateral view. Scales = 1 mm. Setae partially omitted.
Fig. 2 in Two new hermit crab species of the genus Diogenes Dana, 1851 from Lombok Island, Indonesia (Crustacea: Decapoda: Anomura: Diogenidae)
Fig. 2. Diogenes luteus, new species, holotype, male, 2.2 mm (MZB Cru 5754). A, shield and cephalic appendages; B, left antennal peduncle (articles 1–4), ventral view; C, right maxilliped 3, lateral view; D, right maxilliped 3, ischium and basis, lateral view; E, left cheliped, chela and carpus outer view; F, same, chela, mesial view; G, same, merus, lateral view; H, right cheliped, chela and carpus, outer view; I, right pereopod 4, lateral view; J, telson, dorsal view. Scales, A, E‒H = 1 mm; B, C, D, I, J = 0.5 mm. Setae partially omitted.
Fig. 5 in Two new hermit crab species of the genus Diogenes Dana, 1851 from Lombok Island, Indonesia (Crustacea: Decapoda: Anomura: Diogenidae)
Fig. 5. Diogenes kombalensis, new species, holotype, male, 3.5 mm (MZB Cru 5757). A, shield and cephalic appendages; B, right maxilliped 3, lateral view; C, right maxilliped 3, ischium and basis, lateral view; D, left cheliped, chela and carpus, outer view; E, same, merus, lateral view; F, same, chela, mesial view; G, same, inner view; H, right cheliped, chela and carpus, outer view; I, left pereopod 4, lateral view; J, telson, dorsal view. Scales, A, B, D‒J = 1 mm; C = 0.5 mm. Setae partially omitted.
FIG. 12 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 12. — Intuitive phylogenetic tree based on carapace morphologies as outlined in the present study and on data from McLaughlin et al.(2007) and Fraaije et al.(2019). Important synapomorphies include the following: 1, cylindrical carapace; 2, cervical and branchial grooves widely separated; 3, arrow-shaped gastric region; 4, cervical groove not extending to lateral border; 5, intragastric grooves; 6, Y-linea; 7, spinose posterolateral borders.
FIG. 9 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 9. — Changes in taxonomic composition amongst paguroid assemblages within reefal settings during the Late Jurassic (Oxfordian, Kimmeridgian and Tithonian) and mid-Cretaceous (Albian) compared to modern faunas. Grey, Gastrodoridae; orange, cylindrical carapace; blue, non-cylindrical carapace.
FIG. 2 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 2. — Branchial condensation in representatives of the families Parapylochelidae (A, B), Gastrodoridae (C), Xylopaguridae (D, E) and Pylojacquesidae (F).
FIG. 5 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 5. — Isochelous chelae of Schobertella simonsenetlangi Schweigert, Fraaije, Havlik & Nützel, 2013 (SMNS 70555, Staatliches Museum für Naturkunde Stuttgart, Germany, from the Lower Jurassic (upper Pliensbachian) Amaltheenton Formation of Iggingen near Aalen, southwestern Germany. Scale bars: 5 mm.
FIG. 1 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 1. — Branchial condensation in basal paguroid genera: A, Platykotta Chablais, Feldmann & Schweitzer, 2011; B, Schobertella Schweigert, Fraaije, Havlik & Nützel, 2013; C, Eopaguropsis Fraaije, Krzemiński, Van Bakel, Krzemińska & Jagt, 2012.
FIG. 8 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 8. — Schobertella simonsenetlangi Schweigert, Fraaije, Havlik & Nützel, 2013 (SMNS 70555; see also Fig. 5), from the Lower Jurassic (upper Pliensbachian) Amaltheenton Formation of Iggingen near Aalen, southwestern Germany: (A) showing new details of shield morphology, compared to Eopaguropsis nidiaquilae Fraaije, Krzemiński, Van Bakel, Krzemińska & Jagt, 2012 (B) (see Fraaije et al. 2012c: fig. 2d). Scale bars: 10 mm.
FIG. 4 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 4. — Changes in the massetic regions through time; from the Late Jurassic Annuntidiogenes jurassicus Fraaije, 2014 (A) to the mid-Cretaceous (late Albian) Annuntidiogenes worfi Fraaije, van Bakel, Jagt, Klompmaker & Artal, 2009 (B) and extant Paguristes sp. (C).
FIG. 3 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 3. — Reduction of rostral length during the Late Jurassic in representatives of the families Gastrodoridae (A), Parapylochelidae (B) and Pylochelidae (C).
FIG. 7 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 7. — The oldest example of heterochelous paguroid claws from the Upper Jurassic of the Wimereux area (Boulonnais, northwestern France); an individual preserved in situ in the internal mould of a Vetigastropoda (private collection of Mr Gilles Dron). The maximum diameter of the gastropod is about 7 cm.
FIG. 11 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 11. — Paguropsids (Paguropsidae n. fam) through time, from the Oxfordian Eopaguropsis Fraaije, Krzemiński, Van Bakel. Krzemińska & Jagt, 2012 (A), via the Tithonian Eopaguropsis (B) to extant Paguropsis Lemaitre, Rahayu & Komai, 2018 (C).
FIG. 6 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 6. — Isochelous chelae of paguroids from the middle Callovian of Poitou, France: A, specimen UP/CGL.12.10 (UP = Université de Poitiers, CGL = Calcaires de Gratte-Loup). B, specimen UP/CGL.12.11. Photographs: Philippe Loubry. Scale bars: 10 mm.
FIG. 10 in The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report
FIG. 10. — Transition from the Gastrodoridae to the Probeebeidae,featuring branchial condensation, reduction of rostrum, reduction of ornament on shield, inflation of posterior carapace, reduction of delineation of cardiac and reduction of midline carapace crest: A, Gastrodorus; B, Probeebei; C, Labidochirus; D, Tylaspis; E, Tisea.
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