Pseudonannolene typica 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 : 94-96

Pseudonannolene typica Silvestri, 1895

Figs 136–139 , 164M , 166O , 173D , 179D , 189 ; Supp. file 4: Figs 214D, 220B, 222F

Pseudonannolene typica Silvestri, 1895a: 775 .

Pseudonannolene abbreviata Silvestri, 1902: 20 . Syn. nov.

Pseudonannolene typica – Silvestri 1896: 170; 1903: 74, fig. 119. — Brölemann 1909: 85. — Viggiani 1973: 367. — Jeekel 2004: 92. — Iniesta & Ferreira 2013c: 79.

Ppseudonannolene [sic!] typica – Silvestri 1902: 18 (description of male from Puerto Piray, Argentina, 1884, NHMD; examined).

Pseudonannolene abbreviata – Jeekel 2004: 87. — Iniesta & Ferreira 2013c: 79.

Justification of synonymy

Based on the examination of the type material of P. abbreviata (USNM 2031 and ZMB 2887) and the original description, the sexual and somatic characters are in complete agreement with those described for P. typica . Therefore, P. abbreviata is herein proposed as a junior synonym of P. typica .

Diagnosis

Males of P. typica resemble those of P. centralis by having a solenomere with short ectal process, separated from apicomesal process by a shallow notch; internal branch with distal projection ( Figs 137D , 220B). Pseudonannolene typica differs by an evident shoulder on gonocoxa ( Fig. 137D–F ); head without frontal setae ( Fig. 136A ).

Etymology

Name ‘typica’ is derived from the Latin word ‘ typus ’, plus the suffix ‘-icus’ = belonging to. Although unspecified in the original description, the species name is probably an allusion to the name-bearing type of the genus.

Material examined

Syntypes

ARGENTINA • 1 ♂, 2 ♀♀, syntypes of P. typica ; Misiones , Candelaria; [-27.462447, -55.744566]; 53 m a.s.l.; 1884; G. Bove leg.; MCSN .

BRAZIL • 1 ♀, syntype of P. typica ; Paraná; G. Bove leg.; USNM .

URUGUAY • 1 ♀, syntype of P. abbreviata ; Maldonado, Estación La Sierra ; [-34.747175, -55.404774]; 30 m a.s.l.; 27 May 1899; F. Silvestri leg.; USNM 2031 • 1 ♀, syntype of P. abbreviata ; same collection data as for preceding; ZMB 2887 .

Other material (total: 2 ♂♂, 5 ♀♀)

ARGENTINA – Misiones • 1 ♂, 5 ♀♀; Candelaria ; [-27.462447, -55.744566]; 53 m a.s.l.; 1884; G. Bove leg.; MCSN • 1 ♂; Puerto Piray ; [-26.468823, -54.715889]; 50 m a.s.l.; 1884; NHMD .

Descriptive notes

MEASUREMENTS. 60–65 body rings (2–3 apodous + telson). Males:body length 55 mm; maximum midbody diameter 3.3–4 mm. Females: body length 53–66 mm; maximum midbody diameter 3.6–4.3 mm.

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

HEAD. Antennae short ( Fig. 164M ), 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 rounded, with 9 striae, slightly curved ectad ( Fig. 136A ). Very faintly constricted between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae slightly above ozopore in anterior body rings. Anterior sterna in midbody rings subrectangular, with shallow transverse striae ( Fig. 173D ).

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. 137A ); prefemoral process (prf) about as wide as half of prefemur, subcylindrical, curved ectad, densely setose up to its median region ( Fig. 137B ); 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, not extended basally ( Fig. 137C ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, with the base arched; antero-posteriorly flattened ( Figs 137D–F , 214D); with rows of papillae mesally. Seminal groove (sg) curved; arising medially on mesal cavity and terminating apically on the seminal apophysis (sa). Shoulder (sh) subtriangular. Telopodite (tp) almost as wide as gcx ( Figs 137D , 220B); solenomere (sl) with apicomesal process (amp) slightly subtriangular; ectal process (ep) short, subtriangular, separating from amp by shallow notch; sa located at mesal portion, slightly visible apically. Internal branch (ib) subtriangular, narrow, surrounding basally tp as a shield; with a short torsion of 180° starting at midlength, with projection directed diagonally upwards; ib with setae along its entire margin exceeding apically seminal region of sl ( Figs 137D–F , 214D).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 179D ); internal valve subtriangular, slightly compressed medially; operculum large, curved ectad; external valve wide, subtriangular.

Distribution

Known from the border of northeastern Argentina with southern Paraguay ( Fig. 189 ).

Figures

Fig. 136. Pseudonannolene typica Silvestri, 1895, holotype, ♂ (MCSN), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 1 mm.

Fig. 137. Pseudonannolene typica Silvestri, 1895, holotype, ♂ (MCSN). A. First leg-pair. B. Detail of prefemur. C. Second leg-pair. D. Detail of telopodite, in anal view. E. Left gonopod, in anal view. F. Left gonopod, in oral view. Abbreviations: see Material and methods. Scale bars = 0.5 mm.

Fig. 138. Pseudonannolene typica Silvestri, 1895, holotype, ♂ (MCSN) and paratypes (USNM). A–C. Original labels of type material. Images not to scale.

Fig. 139. Type material of the junior subjective synonym Pseudonannolene abbreviata Silvestri, 1902 (= P. typica Silvestri, 1895). A. Anterior region. B. Posterior region. C. Original label of female syntype (USNM 2031). D. Original label of female syntype (ZMB 2887). 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. 173. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. strinatii Mauriès, 1974. B. P. tocaiensis Fontanetti, 1996. C. P. tricolor Brölemann, 1902. D. P. typica Silvestri, 1895. E. P. urbica Schubart, 1945. Images not to scale.

Fig. 179. Stereoscopic images of left vulva of species of Pseudonannolene Silvestri, 1895, in oral view. A. P. strinatii Mauriès, 1974. B. P. tocaiensis Fontanetti, 1996. C. P. tricolor Brölemann, 1902. D. P. typica Silvestri, 1895. E. P. xavieri Iniesta & Ferreira, 2014. F. P. bucculenta sp. nov. G. P. morettii sp. nov. H. P. insularis sp. nov. I. P. nicolau sp. nov. J. P. granulata sp. nov. K. P. alata sp. nov. L. P. curvata sp. nov. M. P. aurea sp. nov. Images not to scale.

Fig. 189. Distribution map of the species Pseudonannolene tocaiensis Fontanetti, 1996, P. tricolor Brölemann, 1902, P. typica Silvestri, 1895, P. urbica Schubart, 1945, and P. xavieri Iniesta & Ferreira, 2014.