Pseudonannolene inops Brölemann, 1929,

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 : 44-45

Pseudonannolene inops Brölemann, 1929 stat. nov.

Figs 74–75 , 163I , 165L , 169B , 177L , 183 , 218B

Pseudonannolene bovei inops Brölemann, 1929: 9 , figs 8–18.

Pseudonannolene bovei inops – Mauriès 1987: 177 (lectotype and paralectotypes designations). — Jeekel 2004: 88.

Diagnosis

Males of P. inops resemble those of P. anapophysis , P. bovei , and P. xavieri by having a solenomere with an elongated ectal process directed horizontally ( Figs 75D–F , 218B), but differing by having a S-shaped internal branch swollen apically ( Fig. 75D ).

Etymology

Named after the Latin adjective ‘ inops ’ = ‘weak’, ‘helpless’, ‘lacking’. Unspecified in the original description.

Material examined (total: 17 ♂♂, 7 ♀♀, 1 immature)

BRAZIL – Rio Grande do Sul • 1 ♂; Maquiné, Fepagro ; [-29.65, -50.2]; 22 m a.s.l.; Jan. 2002; Equipe Biota leg.; IBSP 2505 • 1 ♂, 1 immature; same collection data as for preceding; IBSP 2542 • 3 ♂♂; same collection data as for preceding; IBSP 2550 • 7 ♂♂, 5 ♀♀; same collection data as for preceding; IBSP 2488 • 1 ♀; same collection data as for preceding; IBSP 2544 • 2 ♂♂; same collection data as for preceding; IBSP 2559 • 3 ♂♂, 1 ♀; same collection data as for preceding; IBSP 2533 .

Descriptive notes

MEASUREMENTS. 61–62 body rings (1 apodous + telson). Males: body length 55 mm; maximum midbody diameter 2.5 mm. Females: body length 55–60 mm; maximum midbody diameter 3–3.5 mm.

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

HEAD. Antennae long ( Fig. 163I ), 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 swollen. Ommatidial cluster well-developed, covered partially by anterior region of collum, elliptical; ca 25 ommatidia in 4 rows.

BODY RINGS. Collum with lateral lobes broadly rounded, with ca 6 striae, slightly curved ectad ( Fig. 74A ). 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. 169B ).

FIRST LEG-PAIR OF MALES. Coxae (cx) short (less than half of remaining podomere lengths), subtriangular, with the base arched and slightly expanded, densely setose ( Fig. 75A ); prefemoral process (prf) as long as half of prefemur, subcylindrical, densely setose along the entire ventral region ( Fig. 75B ); remaining podomeres with setae along the mesal region.

SECOND LEG-PAIR OF MALES. Coxa (cx) large and subrectangular; penis (pn) located at proximal region, rounded, not extended basally ( Fig. 75C ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, with the base slightly arched; antero-posteriorly flattened ( Fig. 75D–F ); with rows of papillae mesally. Seminal groove (sg) curved; arising medially on mesal cavity and terminating apically on the seminal apophysis (sa); thickened basally and protruded on squamous region of sl ( Fig. 75E ). Shoulder (sh) inconspicuous. Telopodite (tp) as wide as half of gcx ( Fig. 75D ); solenomere (sl) with apicomesal process (amp) short; ectal process (ep) subtriangular, elongated and perpendicular to amp; sa located at mesal portion, visible apically. Internal branch (ib) swollen, curved apically, S-shaped, and enfolding sl in anal view; ib with setae along its entire margin not exceeding apically seminal region of sl ( Fig. 75D–F ).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 177L ); internal valve subtriangular, with mesal region rounded; operculum large, curved ectad; external valve wide, subtriangular.

Distribution

The species occurs in the Atlantic Forest from Rio Grande do Sul up to Santa Catarina State, Brazil ( Fig. 183 ).

Comments

Although the examination of the lectotype and paralectotypes (two males and two females) deposited at the Muséum national d’histoire naturelle, Paris, France (MNHN), was not possible during this study, the original description and drawings provided by Brölemann (1929) are highly detailed.

Figures

Fig. 74. Pseudonannolene inops Brölemann, 1929, ♂ (IBSP 2559), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 1 mm.

Fig. 75. Pseudonannolene inopsBrölemann, 1929, ♂ (IBSP 2559). 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, 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. 169. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. imbirensis Fontanetti, 1996. B. P. inops Brölemann, 1929. C. P. leopoldoi Iniesta & Ferreira, 2014. D. P. leucocephalus Schubart, 1944. E. P. longicornis (Porat, 1888). Images not to scale.

Fig. 177. Stereoscopic images of left vulva of species of Pseudonannolene Silvestri, 1895, in oral view. A. P. albiventris Schubart, 1952. B. P. alegrensis Silvestri, 1897. C. P. ambuatinga Iniesta & Ferreira, 2013. D. P. anapophysis Fontanetti, 1996. E. P. buhrnheimi Schubart, 1960. F. P. caatinga Iniesta & Ferreira, 2014. G. P. callipyge Brölemann, 1902. H. P. erikae Iniesta & Ferreira, 2014. I. P. fontanettiae Iniesta & Ferreira, 2014. J. P. halophila Schubart, 1949. K. P. imbirensis Fontanetti, 1996. L. P. inops Brölemann, 1929. M. P. leucocephalus Schubart, 1944. N. P. longicornis (Porat, 1888). O. P. lundi Iniesta & Ferreira, 2015. Images not to scale.

Fig. 183. Distribution map of the species Pseudonannolene halophila Schubart, 1949, P. imbirensis Fontanetti, 1996, P. inops Brölemann, 1929, P. leopoldoi Iniesta & Ferreira, 2014, and P. leucocephalus Schubart, 1944.