Pseudonannolene sebastianus 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 : 80-82

Pseudonannolene sebastianus Brölemann, 1902

Figs 31F , 121–122 , 172B , 178L , 187 ; Supp. file 4: Fig. 201C

Pseudonannolene longicornis var. sebastianus Brölemann, 1902a: 126 , pl. vi figs 128–133.

Pseudonannolene longicornis var. sebastianus – Brölemann 1909: 57.

Pseudonannolene sebastiana – Verhoeff 1943: 269, figs 23–27 (misidentified specimens from Viçosa, Minas Gerais, Brazil). — Jeekel 2004: 91.

Pseudonannolene sebastianus – Mauriès 1987: 173, figs 6–8 (lectotype and paralectotype designations). — Gallo & Bichuette 2020: 36.

Diagnosis

Males of P. sebastianus resemble those of P. halophila , P. maritima , P. patagonica , and P. insularis by having large and subrectangular coxae on the first leg-pair ( Fig. 122A ) and a suboval penis ( Fig. 122C ), but differing by having the solenomere rounded, seminal apophysis located medially ( Fig. 122D ), and internal branch without horizontal plate ( Fig. 122D–F ).

Etymology

Although unspecified, the name is evidently an adjective referring to the locality where the type material was found, Ilhabela (formerly Ilha de São Sebastião).

Material examined

Paralectotypes (total: 2 ♂♂, 2 ♀♀, 1 immature) BRAZIL • 2 ♂♂, 2 ♀♀, 1 ♀ immature; São Paulo, Ilhabela (formerly Ilha de São Sebastião ); [-23.812818, -45.362573]; 1 m a.s.l.; Sep. 1896; MZSP .

Other material (total: 18 ♂♂, 26 ♀♀, 62 immatures)

BRAZIL – São Paulo • 9 ♂♂, 5 ♀♀, 1 ♀ immature; Ilhabela ; [-23.818664, -45.368161]; 1 m a.s.l.; Aug. 1950; H. Urban leg.; IBSP 7902 • 1 ♂; same collection data as for preceding; IBSP 7905 • 1 ♂; same locality data as for preceding; 9–15 Oct. 2001; Equipe Biota leg.; IBSP 1389 • 1 ♀; same collection data as for preceding; IBSP 7890 • 1 ♀; same collection data as for preceding; IBSP 1393 • 2 ♀♀, 1 immature; same collection data as for preceding; IBSP 1386 • 1 ♂; same collection data as for preceding; IBSP 1390 • 1 ♂; same collection data as for preceding; IBSP 1396 • 1 ♀ immature; same collection data as for preceding; IBSP 7789 • 1 ♀, 1 ♀ immature; same collection data as for preceding; IBSP 1391 • 1 ♀; same collection data as for preceding; IBSP 1392 • 1 ♀; same collection data as for preceding; IBSP 7891 • 1 ♂; Ubatuba, Fazenda Angelim ; [-23.433713, -45.083857]; 5 m a.s.l.; Dec. 2003; IBSP 3651 • 1 ♂, 6 ♀♀, 4 immatures; Ilha de Dentro ; 19 Jun. 1994; C.F. Vieira and A. Eterovic leg.; IBSP 1110 • 2 ♀♀, 4 ♂♂ immatures, 10 ♀♀ immatures; Ilha da Pesca ; 2–10 Sep. 1994; C.F. Vieira and A. Eterovic leg.; IBSP 1117 • 2 ♂♂ immatures, 1 ♀ immature; Ilha Anchieta ; [-23.550426, -45.066637]; 162 m a.s.l.; 23–30 Jul. 2001; Equipe Biota leg.; IBSP 1424 • 4 ♂♂ immatures, 3 ♀♀ immatures; same collection data as for preceding; IBSP 1435 • 2 ♂♂ immatures, 5 ♀♀ immatures; same collection data as for preceding; IBSP 7904 • 1 ♀, 4 ♀♀ immatures; same collection data as for preceding; IBSP 1404 • 1 ♂ immature; same collection data as for preceding; IBSP 1416 • 1 ♀, 1♀ immature; same collection data as for preceding; IBSP 1420 • 1 ♂ immature; same collection data as for preceding; IBSP 1425 • 1 ♀ immature; same collection data as for preceding; IBSP 1421 • 1 ♂ immature; same collection data as for preceding; IBSP 1411 • 1 ♂ immature; same collection data as for preceding; IBSP 1406 • 1 ♂ immature; same collection data as for preceding; IBSP 1419 • 1 ♀ immature; same collection data as for preceding; IBSP 1428 • 1 ♂ immature, 1 ♀ immature; same collection data as for preceding; IBSP 1415 • 1 ♂ immature; same collection data as for preceding; IBSP 7903 • 1 ♀, 2 ♀♀ immatures; same collection data as for preceding; IBSP 1432 • 1 ♂ immature; same collection data as for preceding; IBSP 1427 • 1 ♂ immature, 1 ♀ immature; same collection data as for preceding; IBSP 1403 • 3 ♂♂ immatures; same collection data as for preceding; IBSP 1405 • 2 ♂♂, 2 ♀♀; Santos ; [-23.967882, -46.328886]; 6 m a.s.l.; Sep. 1896; MZSP • 1 ♀; Cubatão ; [-23.894019, -46.424589]; 6 m a.s.l.; 1990; MZSP • 1 ♂; São Paulo, Belém ; [-23.547131, -46.591176]; 750 m a.s.l.; 1990; MZSP .

Descriptive notes

MEASUREMENTS. 55–58 body rings (1 apodous + telson). Males: body length 49.5–63.5 mm; maximum midbody diameter 3–3.3 mm. Females: body length 59–90 mm; maximum midbody diameter 3.4– 4.8 mm.

COLOR. Body color brownish grey; head and collum darker; antennae greyish; prozonites anteriorly greyish; metazonites with a medial darker band and a posterior brownish; legs brownish.

HEAD. Antennae short ( Fig. 121A ), 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 35 ommatidia in 5 rows.

BODY RINGS. Collum with lateral lobes broadly rounded, with ca 9 deep striae ( Fig. 121A ). Very faintly constricted between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae above ozopore in anterior body rings. Anterior sterna in midbody rings subrectangular, with 8–9 transverse striae ( Fig. 172B ).

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. 122A ); prefemoral process (prf) elongated and as wide as half of prefemur, subcylindrical, densely setose along the entire ventral region ( Fig. 122B ); remaining podomeres with setae along the mesal region.

SECOND LEG-PAIR OF MALES. Coxa (cx) as long as the sum of remaining podomere lengths, rounded; penis (pn) located at proximal region, rounded, extended basally ( Fig. 122C ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, with the base arched; antero-posteriorly flattened ( Fig. 122D–F ); with rows of papillae mesally. Seminal groove (sg) curved; arising medially on mesal cavity and terminating apically on the seminal apophysis (sa). Shoulder (sh) rounded. Telopodite (tp) almost as wide as gcx ( Fig. 122D ), with short laterad projection; solenomere (sl) rounded, with apicomesal process (amp) subtriangular; ectal process absent; sa located at medial portion, visible apically. Internal branch (ib) subtriangular, narrow, surrounding basally tp as a shield; ib with setae along its entire margin nearly exceeding apically seminal region of sl ( Fig. 122D–F ).

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

Distribution

The species is widely distributed in the Atlantic Forest of the coastal region of São Paulo State, Brazil, including some continental islands ( Fig. 187 ).

Comments

The lectotype and paralectotypes (two males) from Ilha de São Sebastião deposited at the Muséum national d’histoire naturelle, Paris, France (MNHN), were not examined during this study.

Figures

Fig. 31. SEM images of second leg-pair of males. A–E. Pseudonannolene halophila Schubart, 1949 (IBSP). F. P. sebastianus Brölemann, 1902 (IBSP). Scale bars: A–B = 0.5 mm; C, F = 0.2 mm; D = 0.05 mm; E = 0.005 mm.

Fig. 121. Pseudonannolene sebastianus Brölemann, 1902, ♀ (IBSP 1110), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 0.5 mm.

Fig. 122. Pseudonannolene sebastianus Brölemann, 1902, ♂ (IBSP 1390). A. First leg-pair. 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. 172. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. rolamossa Iniesta & Ferreira, 2013. B. P. sebastianus Brölemann, 1902. C. P. segmentata Silvestri, 1895. D. P. silvestris Schubart, 1944. E. P. spelaea Iniesta & Ferreira, 2013. 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. 187. Distribution map of the species Pseudonannolene rocana Silvestri, 1902, P. rolamossa Iniesta & Ferreira, 2013, P. rugosetta Silvestri, 1897, P. scalaris Brölemann, 1902, and P. sebastianus Brölemann, 1902.