Pseudoporatia Golovatch, 1999

M., Luiz F., Iniesta, Bouzan, Rodrigo S., R., Claudio A., Souza, Zampaulo, Robson A., Cizauskas, Igor & Brescovit, Antonio D., 2023, Additions to the millipede fauna of an Amazonian ferruginous landscape: a new species of Pseudoporatia Golovatch, 1999 widespread in rock outcrops (Diplopoda, Polydesmida, Pyrgodesmidae), Zoosystema 45 (16), pp. 463-498 : 466

Genus Pseudoporatia Golovatch, 1999

TYPE SPECIES. — Pseudoporatia perplexa Golovatch, 1999 , by monotypy.

EMENDED DIAGNOSIS. — Based on Golovatch (1999: 228). Pseudoporatia can be distinguished from other Neotropical genera of the family by following combination of characters: collum flabellate, entirely covering the head from above ( Fig. 2 ), with 5 + 5/6 + 6 lobulations; metaterga with 2+ 2 rounded paramedian and distolateral lobes in usual three longitudinal rows ( Golovatch 1999: figs 30-32; Fig. 6A, B ), and with irregularly scattered middorsal and intercalary small tubercles; paraterga with three lateral marginal lobulations ( Fig. 3B, C ). Midbody legs unmodified. Males with extremely complex gonopod structure: hemispherical coxae, setose, and strongly papillate ( Golovatch 1999: figs 33, 34; Figs 9A ; 10C ); telopodites nearly fully concealed or exposed from the gonocoel, containing conspicuous, hyaline, fringed lamellae ( Golovatch 1999: figs 33, 35; Figs 9-11 ); prefemoral processes with distal branchlets ( Fig. 9 C-F); solenomere fringed, with subterminal opening of seminal groove ( Fig. 11B, C ). Pseudoporatia resembles the widely distributed genus Poratia Cook & Cook, 1894 in somatic characters ( Cook & Cook 1894; Golovatch & Sierwald 2000: 183), but differs mainly in having much more complex gonopods (see Golovatch & Sierwald 2000: 183). The gonopods of Pseudoporatia , with secondary processes on the femoral region and lamellae, superficially resemble those of some non-Neotropical genera such as Cryptocorypha Attems, 1907 , Dedalodesmus Silvestri, 1927 , and Tonodesmus Silvestri, 1923 ( Attems 1907; Silvestri 1923, 1927; Golovatch 1999; Golovatch et al. 2011b; Golovatch & VandenSpiegel 2015), and particularly the Asian genus Ampelodesmus Miyosi, 1956 by the presence of subunciform branchlets, strongly fringed distal lobes, and lamellae partially covering the telopodite ( Golovatch et al. 2011a: figs 5, 7). Nonetheless, no putative relationship is inferred between these genera until further phylogenetic analysis is carried out.

COMPOSITION. — Pseudoporatia perplexa Golovatch, 1999 , and now including Pseudoporatia kananciue Iniesta, Bouzan, Souza & Brescovit , n. sp.

DISTRIBUTION. — Members of Pseudoporatia seem to be associated with tropical rainforests of the Amazonian region. The distribution of the genus is here extended from the Madeira province in the Brazilian subregion ( Amazonas state, Brazil) up to the Xingu-Tapajós province in the Chacoan subregion (Pará state, Brazil).

Figures

FIG. 2. — Habitus of Pseudoporatia kananciue Iniesta, Bouzan, Souza & Brescovit, n. sp. (IBSP 6528): A, male in dorsal view; B, male in ventral view, with detail of anterior region; C, female in dorsal view; D, female in ventral view, with detail of anterior region; E, male in lateral view. Arrows in B and D indicating the gonopods and cyphopods, respectively. Scale bars: 2 mm.

FIG. 6. — SEM of Pseudoporatia kananciue Iniesta, Bouzan, Souza & Brescovit, n. sp.: A, midbody ring, anterior view (IBSP 10929); B, detail of tergal region with limbus, anterior view (IBSP 10929); C, D, tergal microsculpture, anterior view (IBSP 10929); E, ventral region of female detailing the vulvae (IBSP 10822); F, detail of the vulvae, ventral view (IBSP 10822). Scale bars: A, 500 µm; B, 100 µm; C, D, 10 µm; E, 400 µm; F, 200 µm. Abbreviations: see Material and methods.

FIG. 3. — SEM of Pseudoporatia kananciue Iniesta,Bouzan,Souza & Brescovit, n. sp., female:A, habitus,lateral view (IBSP 10822); B, midbody paraterga, lateral view (IBSP 10822); C, distal region of midbody paratergum, lateral view (IBSP 10929); D, detail of ozospore, lateral view (IBSP 10929), with an associate fungus detailed. Scale bars: A, 2 mm; B, 200 µm; C, 100 µm; D, 40 µm.

FIG. 9. — SEM of Pseudoporatia kananciue Iniesta,Bouzan,Souza & Brescovit,n.sp., gonopods:A, gonopods in situ, ventral view (IBSP 12509);B, fringed process on telopodite (IBSP 12509); C, right gonopod, ectal view (IBSP 7318); D, detail of post-prefemoral process (IBSP 7318); E, distal region of right gonopod (IBSP 6674); F, left gonopod, ventral view (IBSP 7318). Scale bars: A, 200 µm; B, 20 µm; C, F, 100 µm; D, 40 µm; E, 50 µm. Abbreviations: see Material and methods.

FIG. 10. — SEM of Pseudoporatia kananciue Iniesta, Bouzan, Souza & Brescovit, n. sp., male (IBSP 11002), left gonopod (A-C, F) and right gonopod (D, E): A, mesal view; B, submesal view; C, suboral view; D, submesal view; E, solenomere, submesal view; F, distal region, mesal view. Scale bars: A, 300 µm; B-D, 200 µm; E, F, 100 µm. Abbreviations: see Material and methods.

FIG. 11. — SEM of Pseudoporatia kananciue Iniesta, Bouzan, Souza & Brescovit, n. sp., male (IBSP 11002), left gonopod (A, B) and right gonopod (C): A, cannula and prefemoral region, mesal view; B, distal region of the left gonopod; C, detail of apical region of femoral region and solenomere, showing the opening of seminal groove. Scale bars: A, B, 100 µm; C, 50 µm. Abbreviations: see Material and methods.