Pseudonannolene aurea, Iniesta & Bouzan & Brescovit, 2023

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 : 100-101

Pseudonannolene aurea sp. nov.

urn:lsid:zoobank.org:act:0458352D-56B7-4A58-A71A-7E502759CA27

Figs 147–148 , 175D , 179M , 190

Diagnosis

Males of P. aurea sp. nov. slightly resemble those of P. paulista by having a solenomere with a spiniform ectal process deeply notched separating from apicomesal process ( Fig. 148D ), but differing by an internal branch subtriangular with distal projection ( Fig. 148D–F ).

Etymology

The species epithet is derived from the Latin adjective ‘ aurum ’ = ‘golden’; in reference to the type locality Dianópolis, which is historically known for the gold mining activities in the region.

Material examined

Holotype BRAZIL • ♂; Tocantins, Dianópolis, Mojadores cave ; [-11.624226, -46.820593]; 672 m a.s.l.; 4–9 Dec. 2017; F. Pellegatti leg.; IBSP 5858 .

Paratypes (total: 1 ♂, 3 ♀♀) BRAZIL – Tocantins • 1 ♂, 2 ♀♀; Dianópolis, Areia cave ; [-11.624226, -46.820593]; 670 m a.s.l.; 21–29 May 2008; F. Pellegatti leg.; IBSP 5854 • 1 ♀; same collection data as for holotype; 4–12 Mar. 2008; IBSP 5856 .

Referred non-type material (total: 3 ♂♂, 7 ♀♀; 16 immatures)

BRAZIL – Tocantins • 2 ♀♀, 4 immatures; Dianópolis, Vozinha cave ; [-11.624226, -46.820593]; 672 m a.s.l.; 21–29 May 2008; F. Pellegatti leg.; IBSP 5859 • 3 ♂♂, 2 ♀♀, 7 immatures; Onça cave ; 4–12 Mar. 2008; F. Pellegatti leg.; IBSP 5840 • 5 immatures; same locality data as for preceding; 4–9 Dec. 2007; F. Pellegatti leg.; IBSP 5843 • 1 ♀; Coluna cave ; 21–29 May 2008; F. Pellegatti leg.; IBSP 5836 • 2 ♀♀; Vertebra cave ; 21–29 May 2009; F. Pellegatti leg.; IBSP 5837 .

Description

MEASUREMENTS. 58–63 body rings (1–2 apodous + telson). Males: body length 63.1 mm; maximum midbody diameter 3.6–3.8 mm. Females: body length 61.4–67.8 mm; maximum midbody diameter 3.7–4.1 mm.

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

HEAD. Antennae short, 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 ca 10 striae, slightly curved ectad ( Fig. 147A ). 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, without transverse striae ( Fig. 175D ).

FIRST LEG-PAIR OF MALES. Coxae (cx) short (less than half of remaining podomere lengths), subtriangular, with the base arched and strongly expanded, densely setose ( Fig. 148A ); prefemoral process (prf) as long as prefemur, subcylindrical, densely setose up to its median region ( Fig. 148B ); 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. 148C ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, with the base arched; antero-posteriorly flattened ( Fig. 148D–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) subtriangular. Telopodite (tp) almost as wide as gcx, with deep depression separating from sh ( Fig. 148D ); solenomere (sl) with apicomesal process (amp) subtriangular; ectal process (ep) spiniform, elongated, separating from amp by deep notch; sa located at mesal portion, slightly visible apically. Internal branch (ib) subtriangular, narrow, surrounding basally tp as a shield; with torsion of 180° in the distal portion and projection directed diagonally upwards; ib with setae along its entire margin exceeding apically seminal region of sl ( Fig. 148D–F ).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 179M ); internal valve subtriangular, slightly rounded mesally; operculum narrow, curved ectad; external valve subtriangular.

Distribution

Known only from caves and surrounding forests in Dianópolis, Tocantins State, Brazil ( Fig. 190 ).

Figures

Fig. 147. Pseudonannolene aurea sp. nov., paratype, ♂ (IBSP 5854), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 1 mm.

Fig. 148. Pseudonannolene aurea sp. nov., paratype, ♂ (IBSP 5854). 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. 175. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. granulata sp. nov. B. P. alata sp. nov. C. P. curvata sp. nov. D. P. aurea sp. nov. E. P. alegrensis. 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. 190. Distribution map of the speciesPseudonannolene alata sp. nov.,P. aureasp. nov., P. bucculenta sp. nov., P. curvata sp. nov., and P. granulata sp. nov.