Eucampesmella brascubas, Bouzan & Iniesta & Pena-Barbosa & Brescovit, 2021

Bouzan, Rodrigo S., Iniesta, Luiz Felipe M., Pena-Barbosa, João Paulo P. & Brescovit, Antonio D., 2021, Six new species of the widespread Brazilian millipede genus Eucampesmella (Polydesmida: Chelodesmidae), Zoologia (e 66300) 38, pp. 1-22 : 14

Eucampesmella brascubas sp. nov.

Figs 48−52, 67

http://zoobank.org/ F8E2AE5F-D7EE-46C1-A107-5C175F4ECD22

Diagnosis. Males of Eucampesmella brascubas sp. nov. differ from all other species of the genus by the apical portion of the prefemoral process with a small lateral process near the acuminate apex ( Fig. 48). Acropodite with apical portion similar to E. macunaima sp. nov., but with solenomere broader ( Fig. 48).

Type material. Holotype: Male from Areia Branca (10°45’29”S; 37°18’45”W), Sergipe, Brazil, 22-24.V.1973, Museum of Zoology of São Paulo expedition coll. ( MZSP 1155 ) . Paratypes: one male with the same data as for holotype ( IBSP 3634 ) ; one female with the same data as for holotype ( IBSP 3635 ) ; one male with the same data as for holotype ( MZSP 1156 ) ; one female with the same data as for holotype ( MZSP 1157 ) ; one female with the same data as for holotype ( MZSP 1158 ) .

Description. Male (Holotype, MZSP 1155). Coloration (long-preserved in 70% ethanol): Head light brown. Antennae brownish. Body light brown and paranota tip slightly yellowish. Legs brownish. Body rings: cuticle rough, forming a pattern of smooth square shapes; paranota with posterior edges rounded; ozopore central-posteriorly situated on paranota. Stigma oval. Sternite of body ring 4 with one pair of projections; Sternite of body ring 5 with two pairs of projections, the former ones are digitiform and bigger, and the latter ones are smaller and triangular; Sternite of body ring 6 without projections; Sternite of body ring 8 with two pairs of rounded projections. Pair of legs on body ring 3 with coxae possessing a rectangular-shaped genital papilla. Gonopod aperture on body ring 7 elliptical, posterior edge with prominent folds, in anal view the posterior margin has a rounded projecting edge. Legs brownish, with a dorsal lobe on the prefemur. Telson brown with the posterior margin slightly yellowish.

Total length: 51.25. Width total: 7.13. Antennomere lengths (1>7): 0.5; 1.45; 1.45; 1.33; 1.3; 1.15; 0.38. Podomeres lengths (1>7): 0.78; 1.3; 2.13; 0.95; 1.0; 1.4; 0.4. Gonopod aperture, long 2.28, width 3.2. Telson, long 1.25. Gonopod: long 3.0, width 2.83. Coxae: long 1.58, width 2.18. Telopodite: long 2.85, width 1.5.

Gonopods ( Figs 48−50): coxae equivalent to about the length of the telopodite and prominent digitiform (= rectangular, with rounded corners) in ectal view ( Fig. 50). Coxae with a row of macrosetae on the dorsal side. Cannula: hook-shaped. Prefemoral region ventrally developed, about 1/3 length of telopodite; ending in a well-demarcated transition zone. Prefemoral process long; broad, in dorsal view, except for the terminal part; with two terminal branches, the proximal one broad and leaf shaped and the apical one slightly curved and slender; a slender secondary process arises in the medial portion (PfP; Figs 48, 49). Acropodite elongated, robust and broad; apical portion divided into two large branches: spoon-shaped solenomere conducting the prostatic groove that opens on small projected sharp, clearly demarcated from the middle portion of the branch and terminating just near the apex. (S; Fig. 48). Acropodital process (AP) triangular shaped in ventral view ( Fig. 49).

Female (paratype, IBSP 3635). Coloration as in male. Posterior margin of vulvae opening with a small rounded epigyne. Vulvae ( Figs 51, 52) elongated and slender. Total length: 53.88. Width total: 7.5. Posterior margin of the vulvae aperture: 2.6 width. Vulvae: long 2.63, width 0.85. External valve: long 2.38, width 0.35. Internal valve: long 2.37, width 0.37. Operculum: long 0.3, width 0.53. Lateral margin of the both valves with long setae and densely setose, central setae short and scattered; external valve and internal valve with a triangular pair of prominences in the zone where the valves are close, in the medial portion ( Fig. 52); Operculum small (OP, Figs 51, 52).

Distribution. Only known for the type locality ( Fig. 67).

Etymology. The species epithet is a reference to the Brazilian literature character “Brás Cubas” from the book “Memórias Póstumas de Brás Cubas” written by Machado de Assis. Noun in apposition.