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166 results for “Sacoglossa”
Fig. 7 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 7. Stages of shell metamorphosis in Berthelinia singaporensis. A–B, right and left side views of transitional stage with soft, flexible shell flared; C, dorsal view with fold and downwards bent right side of shell; D, right side view with tilted protoconch.
Fig. 10 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 10. SEM micrographs of shell of Berthelinia singaporensis in metamorphosis stage. A, left side of visor-like shell and anterior flared fold; B, ventral view of visor with dried part of mantle fold in aperture; C, close-up of same showing fracture line (arrowhead) where hinge line will form; D, higher magnification of same. In A–C the narrow gap between larval shell (= protoconch) and juvenile shell is visible.
Fig. 6 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 6. Stages of shell metamorphosis in Berthelinia singaporensis. A, initial growth of visor-shaped shell (arrowhead); B–C, pedi-veligers on Caulerpa with increasing visor; in C veliger shell is tilted; D, first appearance of fold in visor (arrow) looking like notch.
Fig. 9 in A fold in the visor: formation of the bivalved shell in Berthelinia singaporensis Jensen, 2015 (Gastropoda: Heterobranchia: Sacoglossa), with notes on spawning and development
Fig. 9. Juvenile development of Berthelinia singaporensis (continued). A, two specimens on Caulerpa; smaller white one with many brown pigment spots, larger specimen completely green with some brown spots; B, close-up of protoconch area of larger specimen showing green contents of digestive gland extending into protoconch.
Fig. 1 in Placida babai (Mollusca: Gastropoda: Sacoglossa) from Russian waters of the Sea of Japan
Fig. 1. Collecting locations of specimens used in this study.
A cryptic radiation of Caribbean sea slugs revealed by integrative analysis: Cyerce ‘antillensis’ (Sacoglossa: Caliphyllidae) is six distinct species
Open the record for dataset details and reuse information.
FIGURE 6 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 6. Schematic drawing of Cylindrobulla schuppi sp. nov. genital system. Abbreviations: am—ampulla, bc —bursa copulatrix, di—diaphragm, fop—female opening, mop—male opening, nigl—nidamental glands, ov—oviduct, p—penis, pr—prostate gland, ps—penial sheath, rs—receptaculum seminis, va—vaginal duct, vd—vas deferens.
FIGURE 5 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 5. SEM micrographs of Cylindrobulla schuppi sp. nov. radula teeth. Scale bars: A—10 µm, B—20 µm, C and D—5 µm.
FIGURE 4 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 4. Cylindrobulla schuppi sp. nov. digestive system and C. beauii radula. A—Cross section of C. schuppi sp. nov. pharyngeal bulb anterior part; B—C. schuppi sp. nov. pharyngeal bulb posterior part with ascus; Note that there are no teeth in the ascus; C—C. schuppi sp. nov. intestine, shortly after emerging from stomach; note the absence of a typhlosole; D—C. schuppi sp. nov. entire radula; E—C. beauii radula; F—C. beauii radula teeth, showing trident shape. Abbreviations: a—ascus, dg—digestive gland, i—intestine, ll—lower radular limb, od—odontophore, s—stomach, sr—salivary gland reservoir, ul—upper radular limb. Scale bars: A—50 µm, B—20 µm, C—20 µm, D—20 µm, E—50 µm, F—20 µm.
FIGURE 1 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 1. External anatomy of Cylindrobulla schuppi sp. nov. and C. beauii. A—C. schuppi sp. nov. habitus (living). B—Schematic drawing showing external and internal anatomy of C. schuppi sp. nov. visible through the shell. C—C. beauii habitus (preserved). D—Schematic drawing showing external and internal anatomy of C. beauii visible through shell. E—C. schuppi sp. nov. shell apex. F—C. beauii shell apex. G—C. schuppi sp. nov. (lateral view) showing shell lip (arrow). H—C. beauii (lateral view). Abbreviations: al—albumen gland, cs—cephalic shield, dg—digestive gland, f—foot, g—gill, h—heart, k—kidney, sa—shell adductor muscle, sh—shell, sl—shell lip. Scale bars: A—2mm, C—0.5 mm, E—0.2 mm, F—0.2 mm, G—2 mm, H—0.5 mm.
FIGURE 3 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 3. Cylindrobulla schuppi sp. nov. schematic drawing of digestive system. Stomach lies within digestive gland. Abbreviations: an—anus, dgl—digestive gland, ep esophageal pouch, es—esophagus, lgl—lip gland, m—mouth area, ogl—oral gland, ph—pharyngeal bulb, s—stomach, sgl—salivary gland.
FIGURE 2 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 2. Cylindrobulla schuppi sp. nov. internal structures. A—eye with oblong lens; B—osphradium; C—heart; D—mantle edge; E—ciliated ridge; F—kidney and lamellate gill. Abbreviations: at—atrium, cr—ciliated ridge, g—gill, k—kidney, l—lens, mf—mantle fold, os—osphradium, pc—pigment cup, pe—pericardium, sf—shell forming gland, v—ventricle. Scale bars: A to F: 20 µm.
FIGURE 10. A in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 10. A comparison of radular teeth from Cylindrobulla species. A—C. beauii as drawn by Marcus (1972); B—C. beauii as observed in this analysis; C—C. gigas based on SEM micrographs made by Mikkelsen (1998); D—C. phuketi based on SEM micrographs made by Jensen (1989); E—C. xishaensis as drawn by Guangyu (1978); F—C. schuppi sp. nov. as observed in this analysis.
FIGURE 7 in The Cylindrobulla / Ascobulla complex—unraveling problems in identification and adding to Cylindrobulla diversity (Gastropoda, Heterobranchia, Sacoglossa) by describing a new species
FIGURE 7. Cylindrobulla schuppi sp. nov. genital system. A—receptaculum seminis with sperm attached to the wall; B—bursa copulatrix; C—prostate surrounding vas deferens; D—coiled vas deferens within penis; E—nidamental glands and prostate; F—cross section of small genital papilla with oviduct and vaginal duct. Abbreviations: ag—albumen gland, bc—bursa copulatrix, bw—body wall, cg—capsule gland, mg—mucous gland, ov—oviduct, p—penis, pr—prostate, rs—receptaculum seminis, s—allosperm attached to receptaculum wall, va—vaginal duct, vd—vas deferens. Scale bars: A to D and F—20 µm, E—200 µm.
FIGURE 74. Elysia buonoi n in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 74. Elysia buonoi n. sp., SEM of the radula and penis. A, Radula (LACM 3316). B, Leading tooth (LACM 3316). C, Penis (LACM 3315).
FIGURE 73. Elysia buonoi n in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 73. Elysia buonoi n. sp., external morphology of preserved type specimens. A, Dorsal view of preserved holotype (LACM 3315); body 3.5 mm long × 3.8 mm wide at widest part of parapodia. B, Ventral view of preserved holotype. C, Dorsal view of preserved paratype (LACM 3316); body length = 3.7 mm.
FIGURE 70. Elysia taino n in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 70. Elysia taino n. sp., external morphology and egg mass. Live specimens were photographed immediately following field collection from Discovery Bay, Jamaica (March 2006). A, Specimen (length = 6 mm) typifying the all-white morph, with brown bands on rhinophores. B, View of specimen (10 mm) from above, showing thin red lines crisscrossing parapodial margin. C Relaxed specimen (10 mm) with parapodia open, showing elongated renopericardial complex, vessel network, and iridescent coloration of dorsum. D, Relaxed specimen (18 mm) with parapodia open; greyish-white gametic vesicles appear midway down and alongside renopericardial extension. E, Portion of egg mass spiral showing irregular ribbon of white ECY twisting around early-stage embryos. Actual field of view = 3 mm across.
FIGURE 69. Elysia hamanni n in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 69. Elysia hamanni n. sp., SEM of the radula and penis. B, Complete radula (LACM 3311). B, Leading tooth (LACM 3311). C, Ascus (LACM 3311), D, Penis (LACM 178668), E, Penis tip (LACM 178668).
FIGURE 68. Elysia hamanni n in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 68. Elysia hamanni n. sp., drawing of renopericardial complex and dorsal vessel network traced from preserved specimen from Florida (LACM 178668, 5 cm long × 3 cm width).
FIGURE 65. Elysia christinae n in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region
FIGURE 65. Elysia christinae n. sp., drawing of renopericardial complex and dorsal vessel network traced from photographs of live animals from Bimini, Bahamas (A: 10 mm long; B: 6 mm long). Grey areas represent sperm-storage vesicles.
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