A reassessment of the Neotropical genus Pseudonannolene Silvestri, 1895: cladistic analysis, biogeography, and taxonomic review (Spirostreptida: Pseudonannolenidae) Author Iniesta, Luiz Felipe Moretti DEEF048E-97FB-4CCD-875F-5FA6184CA8AB&14A15A7F-730F-4D41-BDAC-D53514FAB85D Pós-graduação em Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil. & Laboratório de Coleções Zoológicas, Instituto Butantan, Avenida Vital Brasil, 1500, 05503 - 090, São Paulo, Brazil. rodrigobouzan@outlook.com Author Bouzan, Rodrigo Salvador DEEF048E-97FB-4CCD-875F-5FA6184CA8AB&14A15A7F-730F-4D41-BDAC-D53514FAB85D Pós-graduação em Zoologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil. & Laboratório de Coleções Zoológicas, Instituto Butantan, Avenida Vital Brasil, 1500, 05503 - 090, São Paulo, Brazil. rodrigobouzan@outlook.com Author Brescovit, Antonio Domingos 14A15A7F-730F-4D41-BDAC-D53514FAB85D&D5B81D79-AFAE-47B1-8A6E-DAB448A24BCC Laboratório de Coleções Zoológicas, Instituto Butantan, Avenida Vital Brasil, 1500, 05503 - 090, São Paulo, Brazil. rodrigobouzan@outlook.com&antonio.brescovit@butantan.gov.br text European Journal of Taxonomy 2023 2023-04-27 867 1 1 312 http://dx.doi.org/10.5852/ejt.2023.867.2109 journal article 57602 10.5852/ejt.2023.867.2109 1d2570da-e150-4d75-94d8-bfc5813062bc 2118-9773 7891021 8DEF295C-A8B1-4A6B-B873-B30949F64E07 Pseudonannolene sulcatula Silvestri, 1895 Figs 131 , 176F , 188 Pseudonannolene sulcatula Silvestri, 1895b: 7 , fig. 14. Pseudonannolene sulcatula – Viggiani 1973: 367 . — Jeekel 2004: 91 . Diagnosis Males of P. sulcatula resemble those of P. ophiiulus , P. strinatii , and P. tocaiensis by having a gonopod with a subtriangular gonocoxa; the internal branch being shovel-shaped, but differing by the absence of a horizontal plate in the internal branch ( Silvestri 1895b: 8 , fig. 14; Fig. 131C ). Etymology Unspecified in the original description and not related to any morphological structure of the species. Material examined (total: 1 ♀ ) ARGENTINA – Salta • 1 ♀ ; Rosário de la Frontera ; [ -25.800215 , -64.967830 ]; 200 m a.s.l. ; 11 Apr. 1979 ; Misión Científica Danesa leg.; NHMD . Descriptive notes Gonopod description adapted from Silvestri (1895b: 7) to supplement original description and to introduce gonopod terminology; non-sexual characters described based on examined topotype. MEASUREMENTS . 73 body rings (1 apodous + telson). Males: body length ca 85 mm ; maximum midbody diameter 3.5 mm . COLOR . Body color greyish; prozonites anteriorly greyish; metazonites with a medial greyish band and a posterior whitish; legs lighter brown. HEAD . Antennae short, just reaching back to end of ring 5 when extended dorsally; relative antennomere lengths 1<2≈3>4=5≈6>7. Mandibular cardo with ventral margin narrow. Ommatidial cluster well-developed, elliptical; ca 30 ommatidia in 5 rows. BODY RINGS . Collum with lateral lobes rounded, with ca 7 shallow striae. Very faintly constricted between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae below ozopore. Anterior sterna in midbody rings subrectangular, without transverse striae ( Fig. 176F ). GONOPODS . Gonocoxa ( gcx ) subtriangular, progressively less wide ( Fig. 131C ), with the base not arched; antero-posteriorly flattened; with rows of papillae mesally. Seminal groove ( sg ) not visible. Shoulder absent. Telopodite ( tp ) almost as wide as gcx ; solenomere ( sl ) with apicomesal process ( amp ) short, subtriangular; ectal process ( ep ) inconspicuous, apparently separated from amp by shallow notch; sa not not visible apically. Internal branch ( ib ) shovel-shaped, narrow; almost not surrounding basally tp ; setae restricted to the apical region of ib exceeding seminal region of sl ( Fig. 131C ). VULVAE . As typical for the genus. Bursa subtriangular, glabrous; internal valve subtriangular; operculum narrow; external valve wide, subtriangular. Distribution Known only from northern Argentina ( Fig. 188 ). Comments The type material described by Silvestri (1895b) and supposedly deposited at the Museo Regionale Scienze Naturali, Torino, Italy (MRSN) ( Viggiani 1973: 367 ), was not found. Nevertheless, a topotype from northern Argentina was examined ( Fig. 188 ).