Pseudonannolene patagonica Brölemann, 1902

Iniesta, Luiz Felipe Moretti, Bouzan, Rodrigo Salvador & Brescovit, Antonio Domingos, 2023, A reassessment of the Neotropical genus Pseudonannolene Silvestri, 1895: cladistic analysis, biogeography, and taxonomic review (Spirostreptida: Pseudonannolenidae), European Journal of Taxonomy 867 (1), pp. 1-312 : 69-70

Pseudonannolene patagonica Brölemann, 1902

Figs 106–108 , 164F , 166E , 186

Pseudonannolene patagonica Brölemann, 1902a: 135 , pl. vii figs 160–165.

Pseudonannolene patagonica – Jeekel 2004: 90.

Diagnosis

Males of P. patagonica resemble those of P. halophila , P. maritima , P. sebastianus , and P. insularis sp. nov. by having large and subrectangular coxae on the first leg-pair ( Fig. 107A ) and a suboval penis ( Fig. 107C–D ), but differing by having the stipes of gnathochilarium swollen distally ( Fig. 108C ).

Etymology

Although unspecified, the name is evidently an adjective referring to the locality where the type material was found, Carmen de Patagones.

Material examined

Holotype ARGENTINA • ♂ [gonopods missing]; Buenos Aires, Carmen de Patagones ; [-40.783233, -62.982821]; R. von Ihering leg.; MZSP 242 .

Descriptive notes

Gonopod description adapted from Brölemann (1902a: 135) to supplement original description and to introduce gonopod terminology; remaining male sexual characters described based on examined holotype.

MEASUREMENTS. 60 body rings (2 apodous + telson). Males: fragmented, body length ca 47 mm; maximum midbody diameter 2.6 mm.

COLOR. Body color faded, but apparently prozonites brownish, metazonites with a posterior brown band; head, collum, and legs lighter brown.

HEAD. Antennae long ( Fig. 164F ), just reaching back to end of ring 6 when extended dorsally; antennomeres elongated; relative antennomere lengths 1<2<3>4=5=6>7. Mandibular cardo with ventral margin narrow. Ommatidial cluster well-developed, elliptical; ca 45 ommatidia in 6 rows.

BODY RINGS. Collum with lateral lobes broadly rounded, with ca 12 striae ( Fig. 106A ). 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.

FIRST LEG-PAIR OF MALES. Coxae (cx) elongated (as long as the sum of remaining podomere lengths), subrectangular, with the base arched, densely setose ( Fig. 107A ); prefemoral process (prf) thinner than half the prefemur, subcylindrical, densely setose up to its median region ( Fig. 107B ); remaining podomeres with setae along the mesal region.

SECOND LEG-PAIR OF MALES. Coxa (cx) large and rounded; penis (pn) located at proximal region, rounded, extended basally ( Fig. 107C ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) subtriangular, short ( Fig. 108D ); with rows of papillae mesally. Seminal groove (sg) not visible on mesal cavity. Shoulder (sh) rounded. Telopodite (tp) large, but not as wide as gcx; solenomere (sl) with apicomesal process (amp) rounded; ectal process absent; sa located at mesal portion, slightly visible apically. Internal branch (ib) short, subtriangular, with horizontal plate; setae apparently starting at midlength of ib exceeding seminal region of sl ( Fig. 108D ).

Distribution

Known only from the type locality Carmen de Patagones, Buenos Aires, Argentina ( Fig. 186 ).

Figures

Fig. 106. Pseudonannolene patagonica Brölemann, 1902, holotype, ♂ (MZSP 0242), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 0.5 mm.

Fig. 107. Pseudonannolene patagonica Brölemann, 1902, holotype, ♂ (MZSP 0242). A. First leg-pair. B. Detail of prefemur. C. Second leg-pair. D. Detail of penis. Abbreviations: see Material and methods. Scale bars: A, C = 0.5 mm; B, D = 0.2 mm.

Fig. 108. Pseudonannolene patagonica Brölemann, 1902, holotype, ♂ (MZSP 0242). A–B. Original label of type material. C. Gnathochilarium in ventral view. D. Schematic drawing of right gonopod in anal view (modified from Brölemann 1902a: fig. 164). Abbreviations: see Material and methods. Images not to scale.

Fig. 164. Stereoscopic images of antennae of species of Pseudonannolene Silvestri, 1895. A. P. morettii sp. nov. B. P. nicolau sp. nov. C. P. bucculenta sp. nov. D. P. occidentalis Schubart, 1958. E. P. parvula Silvestri, 1902. F. P. patagonica Brölemann, 1902. G. P. paulista Brölemann, 1902. H. P. robsoni Iniesta & Ferreira, 2014. I. P. rolamossa Iniesta & Ferreira, 2013. J. P. silvestris Schubart, 1944. K. P. strinatii Mauriès, 1974. L. P. tricolor Brölemann, 1902. M. P. typica Silvestri, 1895. N. P. insularis sp. nov. O. P. urbica Schubart, 1945. Images not to scale.

Fig. 166. Stereoscopic images of midbody legs of species of Pseudonannolene Silvestri, 1895. A. P. mesai Fontanetti, 2000. B. P. microzoporus Mauriès, 1987. C. P. ophiiulus. D. P. parvula Silvestri, 1902. E. P. patagonica Brölemann, 1902. F. P. paulista Brölemann, 1902. G. P. robsoni Iniesta & Ferreira, 2014. H. P. rolamossa Iniesta & Ferreira, 2013. I. P. rugosetta Silvestri, 1897. J. P. silvestris Schubart, 1944. K. P. spelaea Iniesta & Ferreira, 2013. L. P. strinatii Mauriès, 1974. M. P. tocaiensis Fontanetti, 1996. N. P. tricolor Brölemann, 1902. O, P. typica Silvestri, 1895. P. P. urbica Schubart, 1945. Q. P. xavieri Iniesta & Ferreira, 2014. R. P. insularis sp. nov. Images not to scale.

Fig. 186. Distribution map of the species Pseudonannolene parvula Silvestri, 1902, P. patagonica Brölemann, 1902, P. paulista Brölemann, 1902, P. pusilla Silvestri, 1895, and P. robsoni Iniesta & Ferreira, 2014.