Six new species of the widespread Brazilian millipede genus <i>Eucampesmella</i> (Polydesmida: Chelodesmidae)

This study concerns the diplopod genus Eucampesmella Schubart, 1955, widespread in Brazil. After this work, the genus includes 12 valid species, and three incertae sedis: E. pugiuncula (Schubart, 1946), E. brunnea Kraus, 1959 and E. schubarti Kraus, 1957. The type-species, Eucampesmella tricuspis (Attems, 1931), is redescribed based on the holotype, and the following six new Brazilian species are added: Eucampesmella macunaima sp. nov. from the states of Rondônia, Pará, and Piauí; E. capitu sp. nov. from the states of Piauí and Paraíba; E. brascubas sp. nov. from the state of Sergipe; E. iracema sp. nov. from the state of Pernambuco; E. pedrobala sp. nov. from the state of Ceará; and E. lalla sp. nov. from the state of Rio Grande do Norte. Furthermore, E. lartiguei ferrii (Schubart, 1956) is recognized as a junior synonym of E. lartiguei lartiguei (Silvestri, 1897), which also had its status changed, and E. sulcata (Attems, 1898) is revalidated, prevailing under the name Leptodesmus tuberculiporus Attems, 1898. In addition, drawings, diagnoses, and distribution maps for all species of the genus are provided.

KEY WORDS:
Amazon rainforest; Atlantic rainforest; Caatinga; Diplopoda; Neotropical; taxonomy

Authorship

Rodrigo S. Bouzan

Laboratório de Coleções Zoológicas, Instituto Butantan, Avenida Vital Brasil 1500, 05503-090 São Paulo, SP, Brazil.Instituto ButantanBrazilSão Paulo, SP, BrazilLaboratório de Coleções Zoológicas, Instituto Butantan, Avenida Vital Brasil 1500, 05503-090 São Paulo, SP, Brazil.

Programa de Pós-graduação em Zoologia, Instituto de Biociências, Universidade de São Paulo. Rua do Matão 101, 05508-090 São Paulo, SP, Brazil.Universidade de São PauloBrazilSão Paulo, SP, BrazilPrograma de Pós-graduação em Zoologia, Instituto de Biociências, Universidade de São Paulo. Rua do Matão 101, 05508-090 São Paulo, SP, Brazil.

http://orcid.org/0000-0002-5331-7031

Luiz Felipe M. Iniesta

http://orcid.org/0000-0002-0529-4162

João Paulo P. Pena-Barbosa

http://orcid.org/0000-0002-2939-3595

Antonio D. Brescovit

http://orcid.org/0000-0002-1511-5324

Corresponding author: Rodrigo S. Bouzan (rodrigobouzan@outlook.com)

Authors’ contribution:

JPPPB, RSB & ADB conceived the idea; JPPPB and RSB analyzed all type materials of species already described. ADB contributed collected in the field. RSB described the new species. RSB and LFMI carried out the microscope work and wrote the manuscript with support from ADB. RSB, LFMI & ADB discussed the results and to the final manuscript.

Competing interests:

The authors have declared that no competing interests exist.

Editorial responsibility:

Ricardo Pinto da Rocha

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (14)

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Figures 1-4
Eucampesmella macunaima sp. nov.: (1) place where the specimens were found; (2) live specimen; (3-4) living adults mating. Photos courtesy of Raphael Indicatti.

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Figures 5-10
Structures of Eucampesmella: (5) head; (6) detail of incisura lateralis; (7) last antennomere; (8) patches with modified setae near the apical sense cones; (9) Gnathochilarium; (10) midbody leg, ventral detail. Scale bars: 5, 9 = 2 mm, 6-8 = 300 µm, 10 = 500 µm.

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Figures 11-14
Structures of Eucampesmella: (11) detail of the edge of paranota; (12) detail of stigma; (13) 7^th body ring, detail of gonopod aperture, ventral view; (14) 7^th body ring, anal view. Scale bars: 11 = 500 µm, 12 = 200 µm; 13, 14 = 2 mm.

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Figures 15-18
Structures of Eucampesmella, left gonopod of E. macunaima sp. nov.: (15) mesal view; (16) ectal view; (17) detail of deep separation between the prefemoral region and acropodite region, ventral view; (18) detail of the cannula and deep separation between the prefemoral region and acropodite region, mesal view. Scale bars: 15-16 = 1mm, 17-18 = 500 µm.

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Figures 19-24
Structures of Eucampesmella, adult female of E. macunaima sp. nov.: (19) 3^rd body ring; (20) detail of epigyne; right vulva: (21) ventral view; (22) lateral view; (23) detail of the operculum; (24) detail of the setae on the external valve. Scale bars: 19 = 2 mm; 20-22 = 1 mm; 23 = 400 µm; 24 = 200 µm.

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Figures 25-29
Eucampesmella tricuspis, holotype, NHMW: (25) dorsal view of anterior; (26) midbody and (27) posterior body rings; (28, 29) left gonopod: (28) microscope slide with gonopod, mesal view; (29) schematic drawing of gonopod, mesal view. Scale bars: 1 mm.

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Figures 30-36
(30-31) Eucampesmella sulcata stat. rev., NHMW, left gonopod: (30) mesal view; (31) ectal view. (32-34) Eucampesmella lartiguei stat. nov., IBSP 4429, left gonopod: (32) mesal view; (33) ventral view; (34) ectal view. (35-36) Eucampesmella lartiguei stat. nov., MNRJ 11609, left vulva: (35) ventral view; (36) lateral view. Scale bars: 30-34 = 1 mm, 35-36 = 500 µm.

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Figures 37-44
(37-39) Eucampesmella expansa, MZSP, right gonopod: (37) mesal view; (38) ectal view; (39) detail of the prefemoral process, ventral view. (40-41) Eucampesmella serrana, holotype, NHMW, left gonopod: (40) mesal view; (41) ectal view. (42-44) Eucampesmella macunaima sp. nov., holotype, IBSP 3632, left gonopod: (42) mesal view; (43) ventral view; (44) ectal view. Scale bars: 37-41 = 1 mm, 42-44 = 600 µm.

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Figures 45-50
(45-47) Eucampesmella capitu sp. nov., holotype, MNRJ 11959, left gonopod: (45) mesal view; (46) ventral view; (47) ectal view. (48-50) Eucampesmella brascubas sp. nov., holotype, MZSP, left gonopod: (48) mesal view; (49) ventral view; (50) ectal view. Scale bars: 800 µm.

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Figures 51-55
(51-52) Eucampesmella brascubas sp. nov., paratype, MZSP, left vulva: (51) ventral view; (52) lateral view. (53-55) Eucampesmella iracema sp. nov., holotype, MNRJ 11648, left gonopod: (53) mesal view; (54) ventral view; (55) ectal view. Scale bars: 51-52 = 700 µm, 53-55 = 800 µm.

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Figures 56-60
Eucampesmella pedrobala sp. nov. (56-58) Holotype, MNRJ 11606, left gonopod: (56) mesal view; (57) ventral view; (58) ectal view. (59-60) Paratype, MNRJ 30173, left vulva: (59) ventral view; (60) lateral view. Scale bars: 56-60 = 800 µm, 59-60 = 700 µm.

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Figures 61-65
Eucampesmella lalla sp. nov. (61-63) Holotype, IBSP 1378, left gonopod: (61) mesal view; (62) ventral view; (63) ectal view. (64-65) Paratype, IBSP 1378, left vulva: (64) ventral view; (65) lateral view. Scale bars: (61-63 = Scale bars: 1 mm, 64-65 = 700 µm.

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Figure 66
Distribution map of Eucampesmella species.

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Figure 67
Distribution map of Eucampesmella species.

Figures 1-4 Eucampesmella macunaima sp. nov.: (1) place where the specimens were found; (2) live specimen; (3-4) living adults mating. Photos courtesy of Raphael Indicatti.

Figures 5-10 Structures of Eucampesmella: (5) head; (6) detail of incisura lateralis; (7) last antennomere; (8) patches with modified setae near the apical sense cones; (9) Gnathochilarium; (10) midbody leg, ventral detail. Scale bars: 5, 9 = 2 mm, 6-8 = 300 µm, 10 = 500 µm.

Figures 11-14 Structures of Eucampesmella: (11) detail of the edge of paranota; (12) detail of stigma; (13) 7^th body ring, detail of gonopod aperture, ventral view; (14) 7^th body ring, anal view. Scale bars: 11 = 500 µm, 12 = 200 µm; 13, 14 = 2 mm.

Figures 15-18 Structures of Eucampesmella, left gonopod of E. macunaima sp. nov.: (15) mesal view; (16) ectal view; (17) detail of deep separation between the prefemoral region and acropodite region, ventral view; (18) detail of the cannula and deep separation between the prefemoral region and acropodite region, mesal view. Scale bars: 15-16 = 1mm, 17-18 = 500 µm.

Figures 19-24 Structures of Eucampesmella, adult female of E. macunaima sp. nov.: (19) 3^rd body ring; (20) detail of epigyne; right vulva: (21) ventral view; (22) lateral view; (23) detail of the operculum; (24) detail of the setae on the external valve. Scale bars: 19 = 2 mm; 20-22 = 1 mm; 23 = 400 µm; 24 = 200 µm.

Figures 25-29 Eucampesmella tricuspis, holotype, NHMW: (25) dorsal view of anterior; (26) midbody and (27) posterior body rings; (28, 29) left gonopod: (28) microscope slide with gonopod, mesal view; (29) schematic drawing of gonopod, mesal view. Scale bars: 1 mm.

Figures 30-36 (30-31) Eucampesmella sulcata stat. rev., NHMW, left gonopod: (30) mesal view; (31) ectal view. (32-34) Eucampesmella lartiguei stat. nov., IBSP 4429, left gonopod: (32) mesal view; (33) ventral view; (34) ectal view. (35-36) Eucampesmella lartiguei stat. nov., MNRJ 11609, left vulva: (35) ventral view; (36) lateral view. Scale bars: 30-34 = 1 mm, 35-36 = 500 µm.

Figures 37-44 (37-39) Eucampesmella expansa, MZSP, right gonopod: (37) mesal view; (38) ectal view; (39) detail of the prefemoral process, ventral view. (40-41) Eucampesmella serrana, holotype, NHMW, left gonopod: (40) mesal view; (41) ectal view. (42-44) Eucampesmella macunaima sp. nov., holotype, IBSP 3632, left gonopod: (42) mesal view; (43) ventral view; (44) ectal view. Scale bars: 37-41 = 1 mm, 42-44 = 600 µm.

Figures 45-50 (45-47) Eucampesmella capitu sp. nov., holotype, MNRJ 11959, left gonopod: (45) mesal view; (46) ventral view; (47) ectal view. (48-50) Eucampesmella brascubas sp. nov., holotype, MZSP, left gonopod: (48) mesal view; (49) ventral view; (50) ectal view. Scale bars: 800 µm.

Figures 51-55 (51-52) Eucampesmella brascubas sp. nov., paratype, MZSP, left vulva: (51) ventral view; (52) lateral view. (53-55) Eucampesmella iracema sp. nov., holotype, MNRJ 11648, left gonopod: (53) mesal view; (54) ventral view; (55) ectal view. Scale bars: 51-52 = 700 µm, 53-55 = 800 µm.

Figures 56-60 Eucampesmella pedrobala sp. nov. (56-58) Holotype, MNRJ 11606, left gonopod: (56) mesal view; (57) ventral view; (58) ectal view. (59-60) Paratype, MNRJ 30173, left vulva: (59) ventral view; (60) lateral view. Scale bars: 56-60 = 800 µm, 59-60 = 700 µm.

Figures 61-65 Eucampesmella lalla sp. nov. (61-63) Holotype, IBSP 1378, left gonopod: (61) mesal view; (62) ventral view; (63) ectal view. (64-65) Paratype, IBSP 1378, left vulva: (64) ventral view; (65) lateral view. Scale bars: (61-63 = Scale bars: 1 mm, 64-65 = 700 µm.

Figure 66 Distribution map of Eucampesmella species.

Figure 67 Distribution map of Eucampesmella species.

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Métricas

Six new species of the widespread Brazilian millipede genus <i>Eucampesmella</i> (Polydesmida: Chelodesmidae)

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[1] Corresponding author: Rodrigo S. Bouzan (rodrigobouzan@outlook.com)