Pseudonannolene bovei Silvestri, 1895

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 : 26-27

Pseudonannolene bovei Silvestri, 1895

Figs 51–52 , 165 , 176 , 181

Pseudonannolene bovei Silvestri, 1895a: 776 , fig. 9.

Pseudonannolene bovei – Silvestri 1902: 24 (description of topotype); 1903: 23, fig. 71. — Jeekel 1965: 125; 2004: 88. — Viggiani 1973: 366. — Iniesta & Ferreira 2013c: 79.

Pseudonannolene bovei bovei [by implication] – Brölemann 1929: 16.

Diagnosis

Males of P. bovei resemble those of P. anapophysis , P. caulleryi , P. inops , and P. xavieri by having a triangular solenomere, with an ectal process directed horizontally ( Fig. 52E ), but differing by the short coxae on the first leg-pair not projected apically ( Fig. 52A ); and a subtriangular internal branch ( Fig. 52E ).

Etymology

Patronym honoring the Italian explorer Giacomo Bove ( Silvestri 1895a).

Material examined

Syntypes

ARGENTINA • 1 ♂ [gonopods, second leg-pair, and gnathochilarium missing; other possible syntypes not found]; Misiones , San Ignacio, Giabibbirri; [-27.256834, -55.540414]; 30 m. a.s.l.; 1884; G. Bove leg.; MCSN .

Descriptive notes

Gonopod description adapted from Silvestri (1895a: 776) to supplement original description and to introduce gonopod terminology; remaining male sexual characters described based on examined syntype and non-sexual described as female.

MEASUREMENTS. 50 body rings (1 apodous + telson). Males: body length ca 50 mm; maximum midbody diameter 3 mm.

COLOR. Body color faded because of long preservation in ethanol, but prozonites appearing brownish, metazonites with a brown posterior band; head, collum, antennae, and legs lighter brown.

HEAD. Antennae short ( Fig. 51A ), just reaching back to end of ring 5 when extended dorsally; relative antennomere lengths 1<2<3>4>5<6>7. Ommatidial cluster well-developed, covered partially by anterior region of collum; ca 25 ommatidia in 4 rows.

BODY RINGS. Collum with lateral lobes broadly subrectangular, with ca 4 striae, slightly curved ectad posteriorly ( Fig. 51A ). Very faintly constriction between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae below ozopore. Anterior sterna in midbody rings subrectangular, without transverse striae ( Fig. 176B ).

FIRST LEG-PAIR OF MALES. Coxae (cx) short, subtriangular, with the base arched, densely setose mainly on distal region ( Fig. 52A ); prefemoral process (prf) short (less than half the length of the prefemur) and slightly constricted basally, subcylindrical, densely setose up to its median region ( Fig. 52B ).

SECOND LEG-PAIR OF MALES. Not examined.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, subrectangular; antero-posteriorly flattened; with rows of papillae mesally. Seminal groove (sg) terminating apically on the seminal apophysis (sa). Shoulder (sh) rounded. Telopodite (tp) as wide as half of gcx; solenomere (sl) with apicomesal process (amp) subtriangular; ectal process (ep) subtriangular, elongated and perpendicular to amp. Internal branch (ib) subtriangular, surrounding tp basally as a shield; ib with setae along its entire margin exceeding apically the seminal region of sl ( Fig. 52E ).

VULVAE. Not examined.

Distribution

Known only from the type locality of Misiones, Argentina ( Fig. 181 ).

Figures

Fig. 51. Pseudonannolene bovei Silvestri, 1895, syntype, ♂ (MCSN), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 1 mm.

Fig. 52. Pseudonannolene bovei Silvestri, 1895, syntype, ♂ (MCSN). A. First leg-pair. B. Detail of prefemur. C–D. Original label of type material. E. Schematic drawing of left gonopod in anal view (modified from Silvestri 1895a: fig. 9). Abbreviations: see Material and methods. Scale bars = 0.2 mm.

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. 176. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. pusilla Silvestri, 1895. B. P. bovei Silvestri, 1895. C. P. brevis Silvestri, 1902. D. P. centralis Silvestri, 1902. E. P. rugosetta Silvestri, 1897. F. P. sulcatula Silvestri, 1895. Images not to scale.

Fig. 181. Distribution map of the species Pseudonannolene bovei Silvestri, 1895, P. brevis Silvestri, 1902, P. buhrnheimi Schubart, 1960, P. caatinga Iniesta & Ferreira, 2014, and P. callipyge Brölemann, 1902.