Pseudonannolene magna Udulutsch & Pietrobon, 2003

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 : 53-54

Pseudonannolene magna Udulutsch & Pietrobon, 2003

Figs 87–88 , 163L , 165Q , 170B , 178A , 184 ; Supp. file 4: Fig. 206D

Pseudonannolene magna Udulutsch & Pietrobon in Fontanetti et al., 2003: 66, figs 1–9.

Diagnosis

Males of P. magna are similar to most species of the genus by having a subtriangular solenomere ( Fig. 88D–F ), but differing by a mesally situated seminal apophysis ( Fig. 88D ) and a long, densely setose prefemoral process on the first leg-pair ( Fig. 88A ).

Etymology

Named after the Latin adjective ‘ magna ’ = ‘large’, ‘huge’. Unspecified in the original description, but likely to be related to the body size of the species.

Material examined

Holotype BRAZIL • ♂ [fragmented]; São Paulo, Valinhos , Serra dos Cocais; [-23.024107, -46.894115]; Mar. 2000; F.B. Britto leg.; MZSP 941 .

Paratypes (total: 3 ♂♂, 4 ♀♀) BRAZIL • 3 ♂♂, 4 ♀♀; same collection data as for holotype; MZSP 941 .

Other material (total: 2 ♂♂, 7 ♀♀, 8 immatures)

BRAZIL – São Paulo • 2 ♂♂, 7 ♀♀, 1 ♀ immature, 7 immatures; Valinhos , Serra dos Cocais; [-23.023664, -46.893820]; 807 m a.s.l.; Mar. 2001; Pietrobon leg.; MZSP .

Descriptive notes

MEASUREMENTS. 60–62 body rings (1 apodous + telson). Males: body length 84 mm; maximum midbody diameter 4 mm. Females: body length 86 mm; maximum midbody diameter 4 mm.

COLOR. Body color greyish; head, collum, antennae, and legs darker; prozonites greyish anteriorly; metazonites with a reddish posterior band.

HEAD. Antennae long ( Fig. 163L ), just reaching back to the end of ring 6 when extended dorsally; antennomeres elongated; relative antennomere lengths 1<2<3>4>5<6>7. Mandibular cardo with narrow ventral margin. Ommatidial cluster well-developed, elliptical; ca 30 ommatidia in 5 rows.

BODY RINGS. Collum with lateral lobes rounded, with ca 7 striae, curved mesad ( Fig. 87A ). Very faint constriction between prozonites and metazonites; prozonites smooth; metazonites laterally with transverse striae above ozopores. Anterior sterna in midbody rings subrectangular, with shallow transverse striae ( Fig. 170B ).

FIRST LEG-PAIR OF MALES. Coxae (cx) short, subtriangular, with the base arched, densely setose, mainly on distal region ( Fig. 88A ); prefemoral process (prf) elongated and as wide as half of prefemur, subcylindrical, slightly curved ectad, densely setose up to its median region ( Figs 88B , 206D).

SECOND LEG-PAIR OF MALES. Coxa (cx) large and subrectangular; penis (pn) located at proximal region, rounded, not extended basally ( Fig. 88C ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, rectangular-shaped, with the base slightly arched; flattened antero-posteriorly ( Fig. 88D–F ); with rows of papillae mesally. Seminal groove (sg) slightly curved; arising medially on mesal cavity and terminating apically on the seminal apophysis (sa). Shoulder (sh) subtriangular. Telopodite (tp) less wide than half of gcx ( Fig. 88D ); solenomere (sl) with apicomesal process (amp) subtriangular; ectal process absent; sa located at mesal portion, visible apically. Internal branch (ib) subtriangular, surrounding base of tp as a shield; ib with setae along its entire margin exceeding apically seminal region of sl ( Fig. 88D–F ).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 178A ); internal valve subtriangular, with mesal region rounded; operculum narrow, slightly curved ectad, constricted medially; external valve wide, subtriangular.

Distribution

Known only from the type locality Serra dos Cocais, Valinhos, state of São Paulo, Brazil ( Fig. 184 ).

Figures

Fig. 87. Pseudonannolene magna Udulutsch & Pietrobon, 2003, paratype, ♂ (MZSP 941), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 1 mm.

Fig. 88. Pseudonannolene magna Udulutsch & Pietrobon, 2003, paratype, ♂ (MZSP 941). A. First legpair. B. Detail of prefemur. C. Second leg-pair. D. Detail of telopodites, in anal view. E. Gonopods, in anal view. F. Gonopods, in oral view. Abbreviations: see Material and methods. Scale bars: A, C, E–F = 0.5 mm; B, D = 0.2 mm.

Fig. 163. Stereoscopic images of antennae of species ofPseudonannolene Silvestri, 1895.A. P. albiventris Schubart, 1952. B. P. anapophysis Fontanetti, 1996. C. P. alata sp. nov. D. P. buhrnheimi Schubart, 1960. E. P. caatinga Iniesta & Ferreira, 2014. F. P. erikae Iniesta & Ferreira, 2014. G. P. fontanettiae Iniesta & Ferreira, 2014. H. P. halophila Schubart, 1949. I. P. inops Brölemann, 1929. J. P. leopoldoi Iniesta & Ferreira, 2014. K. P. longicornis (Porat, 1888). L. P. magna Udulutsch & Pietrobon, 2003. M. P. maritima Schubart, 1949. N. P. mesai Fontanetti, 2000. O. P. microzoporus Mauriès, 1987. Images not to scale.

Fig. 165. Stereoscopic images of midbody legs of species of Pseudonannolene Silvestri, 1895. A. P. ambuatinga Iniesta & Ferreira, 2013. B. P. anapophysis Fontanetti, 1996. C. P. alata sp. nov. D. P. bovei Silvestri, 1895. E. P. buhrnheimi Schubart, 1960. F. P. caatinga Iniesta & Ferreira, 2014. G. P. callipyge Brölemann, 1902. H. P. curtipes Schubart, 1960. I. P. fontanettiae Iniesta & Ferreira, 2014. J. P. halophila Schubart, 1949. K. P. imbirensis Fontanetti, 1996. L. P. inops Brölemann, 1929. M, P. leopoldoi Iniesta & Ferreira, 2014. N. P. leucomelas Schubart, 1947. O. P. longicornis (Porat, 1888). P. P. lundi Iniesta & Ferreira, 2015. Q. P. magna Udulutsch & Pietrobon, 2003. R. P. maritima Schubart, 1949. Images not to scale.

Fig. 170. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. lundi Iniesta & Ferreira, 2015. B. P. magna Udulutsch & Pietrobon, 2003. C. P. maritima Schubart, 1949. D. P. mesai Fontanetti, 2000. E. P. microzoporus Mauriès, 1987. Images not to scale.

Fig. 178. Stereoscopic images of left vulva of species of Pseudonannolene Silvestri, 1895, in oral view. A. P. magna Udulutsch & Pietrobon, 2003. B. P. maritima Schubart, 1949. C. P. mesai Fontanetti, 2000. D. P. microzoporus Mauriès, 1987. E. P. occidentalis Schubart, 1958. F. P. ophiiulus Schubart, 1944. G. P. parvula Silvestri, 1902. H. P. pusilla Silvestri, 1895. I. P. paulista Brölemann, 1902. J. P. robsoni Iniesta & Ferreira, 2014. K. P. rolamossa Iniesta & Ferreira, 2013. L. P. sebastianus Brölemann, 1902. M. P. segmentata Silvestri, 1895. N. P. silvestris Schubart, 1944. O. P. spelaea Iniesta & Ferreira, 2013. Images not to scale.

Fig. 184. Distribution map of the species Pseudonannolene leucomelas Schubart, 1947, P. longicornis (Porat, 1888), P. lundi Iniesta & Ferreira, 2015, P. magna Udulutsch & Pietrobon, 2003, and P. maritima Schubart, 1949.