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FIGURE 1 in Complete larval development of Thor amboinensis (De Man, 1888) (Decapoda: Thoridae) described from laboratory-reared material and identified by DNA barcoding

FIGURE 1. Phylogenetic tree of representatives of the family Thoridae and one outgroup based on the mitochondrial cytochrome c oxidase I (COI) barcode gene sequences (658 bp). Sequences were aligned with those available in GenBank. The phylogenetic reconstruction was carried out with the Maximum Likelihood (ML) analysis, implemented in MEGA version 6.0 (Tamura et al. 2013). Numbers are support values for 10000 bootstraps.

FIGURE 5 in Complete larval development of Thor amboinensis (De Man, 1888) (Decapoda: Thoridae) described from laboratory-reared material and identified by DNA barcoding

FIGURE 5. Thor amboinensis. Eighth zoea: A, total animal, lateral view; B, antennule; C, antenna; D, mandibles; E, first pereiopod; E', detail of propodus and dactylus of first pereiopod; F, second pereiopod; G, third pereiopod; G', detail of propodus and dactylus of third pereiopod; H, fourth pereiopod; I, fifth pereiopod; J, first pleopod; K, second pleopod; L, third pleopod; M, fourth pleopod; N, fifth pleopod; O, telson and uropods. Scale bars: 0.5 mm (B, C, E–G, I–O); 0.1 mm (A, D, E', G', H).

FIGURE 2 in Complete larval development of Thor amboinensis (De Man, 1888) (Decapoda: Thoridae) described from laboratory-reared material and identified by DNA barcoding

FIGURE 2. Thor amboinensis. First zoea: A, total animal, lateral view; B, antennule; C, antenna; D, mandibles; E, maxillule; F, maxilla; G, first maxilliped; H, second maxilliped; I, third maxilliped; J, first pereiopod; K, telson. Second zoea: L, total animal, lateral view; M, antennule; N, antenna; O, first pereiopod; P, second pereiopod; Q, telson. Scale bars: 0.5 mm (A, K, Q); 0.1 mm (B–J, L–P).

FIGURE 4 in Complete larval development of Thor amboinensis (De Man, 1888) (Decapoda: Thoridae) described from laboratory-reared material and identified by DNA barcoding

FIGURE 4. Thor amboinensis. Sixth zoea: A, total animal, dorsal view; B, antenna; C, third pereiopod; D, fourth pereiopod; E, fifth pereiopod; F, telson and uropods. Seventh zoea: G, total animal, lateral view; H, detail of antennules exopod; I, maxillule; J, maxilla; K, first maxilliped; L, second maxilliped; M, third maxilliped; N, detail of dactylus of third pereiopod; O, fourth pereiopod; P, fifth pereiopod; Q, pleopods. Scale bars: 0.5 mm (B, D, E, F); 0.1 mm (A, C, G–M, O–Q).

Figure 5 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 5. Megalopa of Rochinia gracilipes A. Milne Edwards, 1875. (A) dorsal view, pereiopods drawn trunctated; (B) lateral view; (C) antennules, aesthetascs drawn truncated; (D) antenna; (E) mandible; (F) maxillule; (G) maxilla. Scale bars = 0.1 mm.

Figure 4 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 4. Second zoea of Rochinia gracilipes A. Milne Edwards, 1875. (A) maxilliped I; (B) maxilliped II; (C) maxilliped III buds; (D) pereiopod buds; (E) dorsal view of abdomen and telson; (F) magnified view of right furca. Long setae maxillipeds I and II (A and B) were drawn truncated. Scale bars = 0.1 mm.

Figure 1 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 1. First zoea of Rochinia gracilipes A. Milne Edwards, 1875. (A) lateral view; (B) magnified latero-dorsal view showing the short rostrum; (C) antennule; (D) antenna; (E) mandible; (F) maxillule; (G) maxilla. Scale bars = 0.1 mm.

Figure 7 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 7. Megalopa of Rochinia gracilipes A. Milne Edwards, 1875. (A) maxilliped III; (B) pereiopod I; (C) pereiopod II; (D) dorsal view of abdomen; (E) pleopod I; (F) pleopod II; (G) pleopod III; (H) pleopod IV; (I) uropod. Long setae of all pleopods and uropods (E–I) were drawn truncated. Scale bars = 0.1 mm.

Figure 3 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 3. Second zoea of Rochinia gracilipes A. Milne Edwards, 1875. (A) lateral view; (B) magnified latero-dorsal view showing the short rostrum; (C) antennule; (D) antenna; (E) mandible; (F) maxillule; (G) maxilla. Scale bars = 0.1 mm.

Figure 2 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 2. First zoea of Rochinia gracilipes A. Milne Edwards, 1875. (A) maxilliped I; (B) maxilliped II; (C) maxilliped III buds; (D) pereiopod buds; (E) dorsal view of abdomen and telson; (F) magnified view of left furca. Long setae of the maxilliped I (A) were drawn truncated. Scale bars = 0.1 mm.

Figure 6 in The larval development of the spider crab Rochinia gracilipes (Crustacea: Majoidea: Epialtidae: Pisinae) reared in the laboratory

Figure 6. Megalopa of Rochinia gracilipes A. Milne Edwards, 1875. (A). maxilliped I; (B) maxilliped II. Scale bars = 0.1 mm.

FIGURE 9. Oligobregma mucronata n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 9. Oligobregma mucronata n. sp. Photomicrographs: A, holotype, Sta. NBP-21 (LACM-AHF Poly 7013), anterior half of body in ventral view; B, posterior parapodium, anterior view; C, same parapodium, detail of dorsal cirrus and internal glands; D, same parapodium, detail of ventral cirrus and internal glands; E‒I, developmental series of the prostomium (E, Sta. NBP-18, 20 setigers, 2.4 mm long; F, Sta.NBP-21, 22 setigers, 2.8 mm long; G, Sta. NBP-04, 24 setigers, 3.0 mm long; H, Sta. NBP-13, 28 setigers, 4.0 mm long; I, Sta. NBP-21, 30 setigers, 9.5 mm long); J, sperm packets from specimen from Sta. NBP- 20; K, capillaries and lyrate setae from a posterior notopodium from Sta. NBP-21. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus.

FIGURE 8. Oligobregma mucronata n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 8. Oligobregma mucronata n. sp. Paratypes, Sta. NBP-21 (LACM-AHF-Poly 7014): A, anterior end, dorsal view; B, anterior end, ventral view; C, large notopodial spines from setiger 2; D, lyrate seta from posterior setiger; E, posterior parapodium, anterior view; F, pygidium, dorsal view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove.

FIGURE 7. Pseudoscalibregma palmeri n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 7. Pseudoscalibregma palmeri n. sp. Photomicrographs of holotype, Sta. NBP-03 (LACM-AHF-Poly 7009): A, anterior and middle body segments, dorsal view; B, anterior end, ventral view; C, posterior parapodium, posterior view; D, same, detail of dorsal cirrus; E, same, detail of ventral cirrus. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; neP, neuropodium; noP, notopodium; vC, ventral cirrus.

FIGURE 6. Pseudoscalibregma palmeri n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 6. Pseudoscalibregma palmeri n. sp. Holotype, Sta. NBP-03 (LACM-AHF-Poly 7009): A, anterior end, dorsal view; B, anterior end, ventral view; C, detail of interparapodial papilla; D, short spinous setae from setiger 1; E, lyrate seta from middle body setiger.—Pseudoscalibregma bransfieldium: F, short spinous setae from setiger 1; G, posterior parapodium, anterior view. Abbreviations: dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; neP, neuropodium; noP, notopodium, per, peristomium; pr, prostomium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove.

FIGURE 1. Scalibregma australis n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 1. Scalibregma australis n. sp. SEMs from Sta. NBP 29: A, anterior end, dorsal view; B, same specimen showing details of prostomium, peristomium, and setiger 1; C, anterior end of another specimen, right lateral view; D, posterior end, right lateral view; E, parapodia from posterior setigers, right lateral view; F, notosetae from setiger 1, with anterior row of short spinous setae (arrows) and three rows of capillaries; G, detail of two short neuropodial spinous from setiger 1 and bases of two capillaries with numerous short bristles or fibril endings; H, four lyrate neurosetae from setiger 2; I, same, detail of a single lyrate seta with plate-like bristles along interior margin of tynes. Abbreviations: br, branchiae; dC, dorsal cirrus, frH, frontal horn, intP; interramal papilla; lL, lower lip of mouth; mo, mouth; neP, neuropodium; noP, notopodium; per, peristomium; pr, prostomium; pyg, pygidium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove.

FIGURE 3. Scalibregma australis n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 3. Scalibregma australis n. sp. Photomicrographs of Paratypes Sta. NBP-01 (LACM-AHF Poly 7001): A, anterior end, dorsal view; B, anterior end, ventral view; C, entire animal, ventral view; D‒E, dorsal cirri from middle (D) and posterior (E) parapodia showing internal glands; F‒G, ventral cirri from middle (F) and posterior (G) parapodia showing internal glands; H, oocytes, from parts of ovaries; I‒L, oocytes in different stages of maturation; M, sperm packet with sperm nuclei and flagella visible. Abbreviations: dC, dorsal cirrus, vC, ventral cirrus; vG, ventral groove.

FIGURE 5. Scalibregma australis n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 5. Scalibregma australis n. sp. Photomicrographs of post-larvae and juveniles: A‒F, developmental series of the prostomium (A, 16 setigers; B, 17 setigers; C, 20 setigers; D, 22 setigers, E, 28 setigers; F, 30 setigers); G‒I, developmental series of the pygidial cirri (G, 20 setigers; H, 18 setigers; I, 28 setigers with pigmented glands in dorsal cirri); J‒L, changes in body shape, narrowing of posterior end (J, 18 setigers; K, 20 setigers; L, 22 setigers with pigmented glands in dorsal cirri); M, anterior, 28-setiger specimen; N, 30-setiger juvenile, ventral view showing development of the upper and lower lips of the mouth, branchiae, gland on setiger 4, and ventral ridge line. Abbreviations: br, branchiae; gL, gland, lL, lower lip of mouth; pr, prostomium; uL, upper lip of mouth.

FIGURE 4. Scalibregma australis n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 4. Scalibregma australis n. sp. SEMS of post-larvae and juveniles from Sta. NBP-35: A, 10-setiger post-larva, left lateral view; B, short spinous setae and capillaries from setiger 1; C, 16-setiger post-larva, ventral view; D, 15-setiger postlarva, lateral view; E, 18-setiger juvenile, dorsal view; F, 20-setiger juvenile, right lateral view; G, same, detail of prostomium, peristomium, and setigers 1‒3; H, 22-setiger juvenile, right lateral view; I, 26-setiger juvenile, right lateral view; J, same, detail of prostomium, peristomium, and setigers 1‒5 showing development of branchiae on setigers 2‒5; K, same, detail of setigers 2‒4, showing early development of branchiae; L, same specimen showing short spinous setae and capillaries from setiger 1; M, two lyrate setae and a single short spinous seta (arrow) from setiger 4 from 24-setiger juvenile.

FIGURE 2. Scalibregma australis n in New species of Scalibregmatidae (Annelida, Polychaeta) from the East Antarctic Peninsula including a description of the ecology and post-larval development of species of Scalibregma and Oligobregma

FIGURE 2. Scalibregma australis n. sp. Paratypes Sta. NBP-01 (LACM AHF Poly 7001): A, anterior end, ventral view; B, setiger 4, right side, anterior view; C, mid-body setiger, left side, anterior view; D, posterior setiger, left side, anterior view; E, short spinous setae from setiger 1; F, lyrate seta from middle body segment; G, pygidium, ventral view. Abbreviations: aC, anal cirri; br, branchiae; dC, dorsal cirrus, intP; interramal papilla; lL, lower lip of mouth; per, peristomium; pr, prostomium; pyg, pygidium; uL, upper lip of mouth, vC, ventral cirrus; vG, ventral groove. Numbers 1, 2, & 3 denote three rings of the peristomium.