Figure 1
Shell of Diplodon granosus (Bruguière, 1792Bruguière, J.G. 1792. Sur une nouvelle espéce de Mulette. Journal d’Histoire Naturelle, 1: 103-109.): A - MNHN 1710 (Holotype), Cayenne, French Guiana; B - ZSM A354, Pará, Brazil; C - UERJ 10480, Belterra, Pará, Brazil; and D - Detail of the granules of the macrosculpture and the mesoscopic wrinkles over them (magnification = 63 x). Scale bars = 1 cm. This figure is in color in the electronic version.
Figure 2
Meso and microsculpture of Diplodon granosus (Bruguière, 1792Bruguière, J.G. 1792. Sur une nouvelle espéce de Mulette. Journal d’Histoire Naturelle, 1: 103-109.): A - Overview of the granules of the shell; B - Detail of one granule covered by mesoscopic wrinkles; C - Wrinkles covered by spikes of the microsculpture; and D - Detail of the wrinkles with several spikes. Scale bars, A = 200 µm, B = 100 µm, C = 20 µm, D = 2 µm.
Figure 3
Anatomy of Diplodon granosus (Bruguière, 1792Bruguière, J.G. 1792. Sur une nouvelle espéce de Mulette. Journal d’Histoire Naturelle, 1: 103-109.): A - General overview of the soft parts; B - Detail of inhalant opening; C - First section of the digestive system (stomach); D - Anal papilla; E - Outlines of demibranch and marsupium. Scale bars: A, E = 1 cm; B, C, D = 1 mm. Abbreviations: AAM = anterior adductor muscle, AF = anterior fold, AP = anal papilla, APR = anterior pedal protractor muscle, ASA = anterior selection area (SA7), ASP = anterior selection pouch, CN = conical protuberance, COI = common opening of intestine and stylet sac, DF = diaphragm, DH = dorsal hood, DM = dorsal muscles, EDB = external demibranch, EMF = external mantle fold, EO = exhalant opening, ES = esophagus, FT = foot, IC = interlamellar connections, IDB = internal demibranch, IMF = internal mantle fold, IO = inhalant opening, LLP = left side projection, LP = labial palp, LP = lip, LSD = opening of left side diverticula, MA = mantle, MAR = marsupium, MMF = middle mantle fold, MT = mouth, PAM = posterior adductor muscle, PP = pedal protractor muscle, PRA = pseudofeces rejection area, PPR = posterior pedal protractor muscle, PSP = posterior selection pouch, RFA = stomach roof selection area (SA8), RRG = stomach roof rejection groove, RSA = right side selection area (SA3), RSD = opening of right side diverticula, RT = rectum, SRG = stomach floor rejection groove, T = typhlosole, TE = tentacles, TG = transversal groove, TM = minor typhlosole.
Figure 4
Distribution of Diplodon granosus (Bruguière, 1792Bruguière, J.G. 1792. Sur une nouvelle espéce de Mulette. Journal d’Histoire Naturelle, 1: 103-109.) in northern South America, based on the material examined in the present study. This figure is in color in the electronic version.