Pseudonannolene typica Silvestri 1895
Creators: name: Iniesta, Luiz Felipe Moretti
name: Bouzan, Rodrigo Salvador
name: Brescovit, Antonio Domingos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Spirostreptida
Pseudonannolenidae
Pseudonannolene
Pseudonannolene typica

description: 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).
description: Published as part of 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), pp. 1-312 in European Journal of Taxonomy 867 (1) on pages 94-96, DOI: 10.5852/ejt.2023.867.2109, http://zenodo.org/record/7891021