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.