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FIGURES 60–61 in Ribautia lewisi sp. nov., a new centipede from Argentina with unusual tentorial process (Chilopoda: Geophilomorpha, Geophilidae)

FIGURES 60–61. Ribautia lewisi sp. nov. (female paratype (K); ARGENTINA: Entre Ríos Province: Concordia Department): (60) Ultimate leg-bearing segment and postpedal segments, dorsal. (61) Ultimate leg-bearing segment and postpedal segments, ventral (a: vestigial gonopods). Scale bar: 0.3 mm.

FIGURES 11–14 in Ribautia lewisi sp. nov., a new centipede from Argentina with unusual tentorial process (Chilopoda: Geophilomorpha, Geophilidae)

FIGURES 11–14. Ribautia lewisi sp. nov. (male holotype; ARGENTINA: Entre Ríos Province: Concordia Department): (11) Dorsal view of anterior region of the body, showing cephalic plate, bases of antennae, forcipular segment, and anterior portion of leg-bearing segment 1 (a: concavity on lateral margins of cephalic plate). (12) Clypeus and bases of antennae (a: concavity on lateral margins of cephalic plate). (13) Clypeal area. (14) First and second maxillae, ventral (a: process of antero-internal corners of coxosternite; b: distoectal process of telopodites). Scale bars: 0.05 mm (13); 0.2 mm (12, 14); 0.3 mm (11).

FIGURES 15–19 in Ribautia lewisi sp. nov., a new centipede from Argentina with unusual tentorial process (Chilopoda: Geophilomorpha, Geophilidae)

FIGURES 15–19. Ribautia lewisi sp. nov. (male holotype; ARGENTINA: Entre Ríos Province: Concordia Department): (15) Detail of first article of telopodite and antero-internal corner of coxosternite, right side of second maxillae, ventral (a: process of coxosternite, b: distoectal process of telopodite). (16) Claw of right telopodite of second maxillae, ventral. (17) Forcipular segment, ventral. (18) Middle part of anterior border of forcipular coxosternite showing unpigmented denticles, ventral. (19) Detail of poison gland (a), calyx (b), and duct (c) of venom apparatus in right forcipular telopodite, ventral. Scale bars: 0.05 mm (15, 16, 18); 0.2 mm (19); 0.3 mm (17).

FIGURES 1–10 in Ribautia lewisi sp. nov., a new centipede from Argentina with unusual tentorial process (Chilopoda: Geophilomorpha, Geophilidae)

FIGURES 1–10. Ribautia lewisi sp. nov. (male holotype; ARGENTINA: Entre Ríos Province: Concordia Department): (1) Left a.a. I–VI, ventral. (2) Left a.a. VII–XIV, ventral (claviform sensilla not drawn). (3). Left a.a. II, ventral (b: b type sensilla). (4) Left a.a. V, ventral (b: b type sensilla). (5) Left a.a. IX, ventral (a, b: a, b type sensilla). (6) Left a.a. XIII, ventral (a, b: a, b type sensilla). (7) Left a.a. II, dorsal (a: a type sensilla). (8) Left a.a. V, dorsal (a, b: a, b type sensilla). (9) Left a.a. IX, dorsal (a, b: a, b type sensilla). (10) Left a.a. XIII, dorsal (a, b: a, b type sensilla). Scale bars: 0.1 mm (3–10); 0.3 mm (1, 2).

FIGURES 62–67 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 62–67. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (62) Ultimate leg-bearing segment and postpedal segments, ventral. (63) Left cluster of coxal organs, ventral (a: mucous layer, b: outline of lobe). (64) Left cluster of coxal organs, dorsal (a: mucous layer, b: outline of lobe). (65) Claw of left ultimate leg, ventral (a: single internal spine). (66) Left gonopod, ventral. (67) Penis, dorsal. Scale bars: 0.02 mm (65); 0.05 mm (66, 67); 0.1 mm (63, 64); 0.3 mm (62).

FIGURES 57–61 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 57–61. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (57) Left leg (pair 40), ventral. (58) Claw of the left leg (pair 1), posterior-ventral view (a: anterior spine, b: posterior spine). (59) Claw of the left leg (pair 2), ventral view (a: anterior spine, b: posterior spine). (60) Claw of the left leg (pair 20), anterior-ventral view (a: anterior spine, b: posterior spine). (61) Ultimate leg-bearing segment and postpedal segments, dorsal. Scale bars: 0.02 mm (58–60); 0.2 mm (57); 0.3 mm (61).

FIGURES 27–37 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 27–37. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (27) Middle part of anterior border of forcipular coxosternite showing unpigmented denticles, ventral. (28) Detail of unpigmented denticles on middle part of anterior border of forcipular coxosternite. (29) Detail of poison gland (a), calyx (b), and duct (c) of venom apparatus in left forcipular telopodite, ventral. (30) Detail of left forcipular tarsungulum, showing medial ventral edge slightly serrate. (31) Detail of calyx of poison gland in left forcipular telopodite, ventral (a: calyx, b: duct). (32) Detail of calyx of poison gland in right forcipular telopodite, ventral (a: calyx, b: duct). (33) Sternite 2. (34) Sternite 3. (35) Sternite 4. (36) Sternite 5. (37) Sternite 6. Scale bars: 0.01 mm (31, 32); 0.05 mm (30); 0.06 mm (28); 0.1 mm (27); 0.2 mm (29, 33–37).

FIGURES 38–46 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 38–46. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (38) Sternite 7. (39) Sternite 8. (40) Sternite 9. (41) Sternite 10. (42) Sternite 11. (43) Sternite 12. (44) Sternite 13. (45) Sternite 35. (46) Sternite 36. Scale bar: 0.2 mm.

FIGURES 74–79 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 74–79. (74–76). Ribautia combinata Pereira, Uliana & Minelli, 2006 (female holotype; PERU: Loreto: Allpahuayo, ca. 30 Km S Iquitos): (74) Detail of process in antero-internal corner of coxosternite, left side of second maxillae, ventral (a: process of coxosternite). (75) Coxal organs, ventral (a: independent opening organ, b: cluster of organs). (76) Right leg (pair 1), postero-ventral view (from Pereira et al., 2006). (77–79). Ribautia jakulicai Pereira, 2007 (male holotype; ARGENTINA: Salta: Orán: ca. 25 Km northwest of Aguas Blancas): (77) Labrum. (78) Detail of process in antero-internal corner of coxosternite, right side of second maxillae, ventral (a: process of coxosternite). (79) Detail of denticles on middle part of anterior border of forcipular coxosternite (modified from Pereira, 2007). Scale bars: 0.05 mm (74, 77, 78); 0.1 mm (75, 76, 79).

FIGURES 1–11 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 1–11. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (1) Right a.a. I–VI, ventral. (2) Right a.a. VII–XIV, ventral. (3) Right a.a. XIV, dorsal (a: claviform sensilla, b: apical specialized sensilla). (4) Right a.a. II, ventral (b: b type sensilla). (5) Right a.a. V, ventral (a, b: a, b type sensilla). (6) Right a.a. IX, ventral (a, b: a, b type sensilla). (7) Right a.a. XIII, ventral (a, b: a, b type sensilla). (8) Right a.a. II, dorsal (a: a type sensilla). (9) Right a.a. V, dorsal (a: a type sensilla). (10) Right a.a. IX, dorsal (a, b: a, b type sensilla). (11) Right a.a. XIII, dorsal (a, b, c: a, b, c type sensilla). Scale bars: 0.05 mm (3–11); 0.2 mm (1, 2).

FIGURES 12–18 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 12–18. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (12) Dorsal view of anterior region of the body, showing cephalic plate, bases of antennae, forcipular segment, and anterior portion of leg-bearing segment 1 (a: vestigial concavity on lateral margins of cephalic plate). (13) Clypeus and bases of antennae (a: vestigial concavity on lateral margins of cephalic plate). (14) Anterior central part of clypeus showing clypeal area. (15) Detail of clypeal area. (16) Labrum. (17) Right side of first maxillae, dorsal. (18) Detail of lappets in right side of first maxillae, dorsal (a: lappet of coxosternite, b: lappet of telopodite, c: sensilla of telopodite). Scale bars: 0.01 mm (15); 0.03 mm (18); 0.05 mm (14, 16); 0.1 mm (17); 0.2 mm (13); 0.3 mm (12).

FIGURE 85 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURE 85. Type locality of Ribautia paranaensis sp. nov., in the Upper Paraná Atlantic Forest ecoregion ("selva paranaense") of the Atlantic Forest complex.

FIGURES 47–56 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 47–56. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (47) Sternite 37. (48) Sternite 38. (49) Sternite 39. (50) Sternite 40. (51) Left leg (pair 1), ventral. (52) Left leg (pair 2), ventral. (53) Left leg (pair 6), ventral. (54) Left leg (pair 10), ventral. (55) Left leg (pair 14), ventral. (56) Left leg (pair 30), ventral. Scale bar: 0.2 mm.

FIGURES 19–26 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 19–26. Ribautia paranaensis sp. nov. (male holotype; ARGENTINA: Misiones Province: Puerto Iguazú): (19) First and second maxillae, ventral (a: process of antero-internal corners of coxosternite). (20) Detail of process in antero-internal corner of coxosternite, left side of second maxillae, ventral (a: process of coxosternite). (21) Detail of process in antero-internal corner of coxosternite, left side of second maxillae, dorsal (a: process of coxosternite). (22) Left telopodite of second maxillae, dorsal (a: process of coxosternite). (23) Claw of right telopodite of second maxillae, ventral. (24) Claw of left telopodite of second maxillae, ventral. (25) Claw of left telopodite of second maxillae, dorsal. (26) Forcipular segment, ventral (a: Scale bars: 0.03 mm (20, 21, 23–25), 0.1 mm (22), 0.2 mm (19), 0.3 mm (26).

FIGURES 70–73 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 70–73. (70). Ribautia paranaensis sp. nov. (female paratype (C); ARGENTINA: Misiones Province: Puerto Iguazú): Anterior and posterior spermathecae at level of leg-bearing segments 39–42, dorsal (a: spermatozoa, b: outline of spermatheca). (71). Ityphilus bonatoi Pereira, 2013 (female holotype; BRAZIL: RJ: Ilha Grande): Anterior and posterior spermathecae at level of leg-bearing segment 38, dorsal (a: spermatozoa, b: outline of spermathecae) (from Pereira, 2013d). (72). Schendylops ramirezi Pereira, 2013 (female holotype; BRAZIL: RJ: Ilha Grande): Anterior and posterior spermathecae at level of leg-bearing segment 25, ventral (a: spermatozoa, b: outline of spermathecae) (from Pereira, 2013c). (73). Ribautia combinata Pereira, Uliana & Minelli, 2006 (female holotype; PERU: Loreto: Allpahuayo, ca. 30 Km S Iquitos): Labrum (from Pereira et al., 2006). Scale bars: 0.05 mm (73); 0.2 mm (70–72).

FIGURES 80–84 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 80–84. (80). Ribautia lewisi Pereira, 2013 (female paratype (M); ARGENTINA: Entre Ríos Province: Concordia Department): Labrum (a: sclerotized process on internal limb of tentorium) (from Pereira, 2013b). (81). Ribautia lewisi Pereira, 2013 (male holotype; ARGENTINA: Entre Ríos Province: Concordia Department): Detail of process in antero-internal corner of coxosternite, right side of second maxillae, ventral (a: process of coxosternite, b: distoectal process of telopodite) (from Pereira, 2013b). (82). Ribautia limaensis Kraus, 1957 (male holotype; PERU: Lomas de Atocongo): Labrum (from Kraus, 1957). (83–84). Ribautia silvana Kraus, 1954 (male holotype; PERU: Hacienda Monteseco (6°50'S 79°10´W)): (83) Labrum. (84) Forcipular segment, ventral (from Pereira et al., 1995). Scale bars: 0.05 mm (80, 81, 83); 0.3 mm (84); no scale available for 82.

FIGURES 68–69 in First report of geophilid centipedes of the genus Ribautia (Myriapoda: Chilopoda: Geophilomorpha) from the Atlantic Forest biome, with description of a new miniature species from Misiones Province, Northeastern Argentina

FIGURES 68–69. Ribautia paranaensis sp. nov. (female paratype (A); ARGENTINA: Misiones Province: Puerto Iguazú): (68) Ultimate leg-bearing segment and postpedal segments, dorsal. (69) Ultimate leg-bearing segment and postpedal segments, ventral. Scale bar: 0.3 mm.