Taxonomic review of the genus Atlantodesmus Hoffman, 2000 (Polydesmida: Chelodesmidae) Author Bouzan, Rodrigo Salvador Author Pena-Barbosa, João Paulo P. Author Brescovit, Antonio Domingos text Zootaxa 2017 4236 2 269 290 journal article 36466 10.11646/zootaxa.4236.2.3 32f80859-d521-4449-adfc-3b04c33b3f39 1175-5326 321750 8A62CD73-AE84-47D1-8E31-9FD256086BF1 Atlantodesmus pintoi ( Schubart, 1946 ) Figures 5 ĀC, 13–15, 19 Leptodesmus pintoi Schubart, 1946 : 166 , fig. 2 (Male holotype from Ilhéus ( 39°04’63’’W , 14°79’35’’S ), Bahia , Brazil , 1919, E. Garbe leg., deposited in MZSP 412 , examined). Leptodesmus pintoi: Schubart, 1956: 421 . Atlantodesmus pintoi : Hoffman, 2000 : 106 . FIGURE 13. Atlantodesmus pintoi (Holotype, MZSP 412), left gonopod. A, mesal view; B, ectal view. Scale bar = 1 mm. A, acropodite process; Cg, cingulum; PfP, prefemoral process; S, solenomere. Arrow refers to lobe present above the base of the solenomere. FIGURE 14. Atlantodesmus pintoi . A, left gonopod in mesal view; B, left gonopod in ectal view; C, detail of the reduced cingulum; D, folds in prefemoral region of the gonopod; E, Aperture of gonopod; F, detail of folds in the posterior margin of the aperture of gonopod. A, acropodite process; Cg, cingulum; PfP, prefemoral process; S, solenomere. Arrow refers to cingulum. FIGURE 15. Atlantodesmus pintoi . A, lateral projection on the seventh segment; B, cyphopods in lateral view; C, detail of the left cyphopod in lateroventral view; D, detail of the right cyphopod in lateroventral view. Additional material examined. BRAZIL . BAHIA : Ilhéus ( 39°04’63’’W , 14°79’35’’S ), 5♀ , 1919, E. Garbe col. ( MZSP 929 , MZSP 930 , MZSP 931 , MZSP 932 ) . Reserva Biológica de Una ( 39°02’98’’W , 15°19’54’’S ), 22♂ 16♀ , XI/2001 , A.D. Brescovit col. ( IBSP 991 , IBSP 992 , IBSP 1001 , IBSP 1003 , IBSP 995 ) ; 1♂ 2♀, 13–16/IV/ 1998 , A.D. Brescovit et al. col. (IBSP 581, IBSP 584). Ribeirão do Engano ( 39°04’63’’W , 14°79’35’’S ), 1♂ , 1945, G. Pereira col. ( MNRJ 11954 ) . Jussari , Reserva Natural da Serra de Teimoso ( 39°49’41’’W , 15°18’80’’S ), 1♀ , 08– 10/IV/1998 , A.D. Brescovit et al. col. ( IBSP 600 ) . Itabuna ( 39°27’84’’W , 14°78’80’’S ), 1♂ , 1919, E. Garbe col. ( MZSP 927 ) . Diagnosis. Males of Atlantodesmus pintoi differ from all other species of the genus by the acropodite process with a large, rounded spoon-shaped tip ( Figs 13 A–B, 14A–B). Redescription. Male ( Holotype , MZSP 412). Coloration (in alcohol): Head reddish brown. Body brown with a median dorsal white band. Paranota tip white. Legs reddish. Telson white. Total length: 57. Collum 2.09 long, 7.11 wide. Antennomere lengths (1>7): 0.91; 2.40; 2.28; 2.20; 2.20; 1.78; 0.29. Gonopod opening: 1.21 long, 1.78 wide. Telson 1.95. Gonopods: coxae with two bristles in the distal dorsal side. Without coxal apophysis. Prefemoral region ventrally positioned. Prefemoral process long, with narrow stalk about half of total PfP length; apex expanded, calyx-shaped, edge of calyx slightly serrated ( Fig. 13 A). The dorsal side of the prefemoral region with several folds ( Fig. 14 D). Transition from prefemoral region to acropodite discontinuous. Small incision at the external margin of the telopodite is visible in mesal view. Reduced cingulum visible in ectal view ( Fig. 14 C, arrow). Solenomere long and falciform. Acropodite process with a rounded lobe above the base of the solenomere ( Fig. 13 A, arrow), acropodite process terminating in a large flat rounded apex ( Figs 13 A–B). Female ( Paratype , MZSP 929). Coloration (in alcohol) and body as in male. Total length 50. Collum 2.03 long, 6.80 wide. Telson 1.83. Cyphopods ( Figs 15 B–D) with numerous dispersed fine bristles on both valves. The apical part of cyphopod is slightly projected, the intermediate membrane projects between the valves ( Fig. 15 B). Variation : The body of some specimens can show a whitish yellow coloration, however the median band is present, but weakly developed. In some individuals the apex of the prefemoral process lacks serration. Distribution. State of Bahia , Brazil , in areas containing the Brazilian Atlantic forest biome ( Por et al. 2005 ).