Pseudonannolene occidentalis Schubart 1958
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 occidentalis

description: Pseudonannolene occidentalis Schubart, 1958
Figs 19B, 98–100, 164D, 171A, 178E, 185; Supp. file 4: Figs 194B, 199D, 208C, 212A, 216E, 222E
Pseudonannolene occidentalis Schubart, 1958: 214, figs 12–13.
Pseudoannolene [sic!] occidentalis – Krabbe 1982: 71.
Pseudonannolene occidentalis – Jeekel 2004: 89. — Golovatch et al. 2005: 279.
Diagnosis
Males of P. occidentalis differ from all congeners by having the frontal region of the head densely setose, overlapping the supralabral and labral setae (Fig. 19B); mandibular cardo finely granular, with swollen ventral margin (Figs 171A, 199D); solenomere with seminal apophysis located ectally (Fig. 99D).
Etymology
Adjective referring to the geographical distribution of the species in western Brazil (Schubart 1958).
Material examined
Holotype BRAZIL • ♂ [gonopods, first and second leg-pair on microscope slides]; Mato Grosso do Sul, Salobra; [-20.187516, -56.547016]; 112 m a.s.l.; 22 Jan. 1955; L. Travassos leg.; MZSP.
Paratypes (total: 2 ♀♀) BRAZIL • 2 ♀♀; same collection data as for holotype; MZSP.
Other material (total: 9 ♂♂, 7 ♀♀, 4 immatures)
BRAZIL – Mato Grosso • 2 ♂♂; Chapada dos Guimarães, close to Aldeia Velha; [-15.464565, -55.760228]; 823 m a.s.l.; 6 Mar. 2014; A. Chagas-Jr and M. Karam-Gemael leg.; CZUFMT 808 • 2 ♂♂, 1 ♀, 4 immatures; Chapada Aventura; [-15.464283, -55.759722]; 820 m a.s.l.; 7 Nov. 2015; A. Chagas-Jr et al. leg.; CZUFMT 818 • 1 ♂, 4 ♀♀; same locality data as for preceding; 28 Aug. 2014; A. Chagas-Jr leg.; CZUFMT 823. – Mato Grosso do Sul • 1 ♂; Salobra; [-20.189192, -56.547513]; 112 m a.s.l.; 19 Jan. 1941; F. Lane leg.; MZSP. – São Paulo • 3 ♂♂, 1 ♀; Jundiaí, Serra do Japi; [-23.226630, -46.924751]; 871 m a.s.l.; 6–10 Aug. 2001; Equipe Biota leg.; IBSP 1998 • 1 ♀; Jundiaí, Reserva Natural Municipal da Serra do Japi; [-23.236337, -46.943607]; 1069 m a.s.l.; Mar. 2007; A.D. Brescovit leg.; IBSP 3100.
Descriptive notes
MEASUREMENTS. 70–73 body rings (2 apodous + telson). Males: body length 70–80 mm; maximum midbody diameter 4.4–5 mm. Females: body length 70 mm; maximum midbody diameter 4.8 mm.
COLOR. Body color brownish yellow; head, collum, and antennae darker; prozonites and metazonites anteriorly darker, with a posterior band reddish; legs brownish.
HEAD. Antennae short (Fig. 164D), just reaching back to end of ring 5 when extended dorsally; relative antennomere lengths 1≈2≈3>4=5=6>7. Frontal setae overlapping supralabral and labral ones (Fig. 19B). Mandibular cardo with ventral margin swollen (Figs 171A, 199D). Ommatidial cluster well-developed, elliptical; ca 25 ommatidia in 4 rows.
BODY RINGS. Collum with lateral lobes rounded, with ca 7 striae, slightly curved ectad (Fig. 98A). Very faintly constricted between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae up to ozopore in anterior body rings. Anterior sterna in midbody rings subrectangular, without transverse striae (Fig. 171A).
FIRST LEG-PAIR OF MALES. Coxae (cx) elongated (as long as the sum of remaining podomere lengths), subrectangular, with the base arched, densely setose (Figs 99A, 100B); prefemoral process (prf) elongated and as wide as half of prefemur, subcylindrical, densely setose along the entire ventral region (Fig. 99B); 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 (Figs 99C, 100E–F, 208C); prefemur compressed dorsoventrally; remaining podomeres setose.
GONOPODS. Gonocoxa (gcx) subtriangular, basally expanded and progressively less wide, with the base slightly arched; antero-posteriorly strongly flattened, longitudinal thickened ridge with rows of papillae mesally (Figs 99D–F, 100C–D). Seminal groove (sg) curved; arising medially on mesal cavity and terminating apically on the seminal apophysis (sa). Shoulder absent. Telopodite (tp) arising from gcx by short, compressed trunk (Figs 99D, 100D); solenomere (sl) with apicomesal process (amp) short; ectal process (ep) short, subtriangular, separating from amp by shallow notch; sa located at ectal portion, elongated and thickened apically. Internal branch (ib) shovel-shaped and rounded apically, with horizontal plate; setae restricted to the apical region of ib exceeding seminal region of sl (Figs 99D–F, 100C–D).
VULVAE. As typical for the genus. Bursa subtriangular, glabrous (Fig. 178E); internal valve subtriangular; operculum large, slightly expanded apically; external valve wide, subtriangular.
Distribution
Known from the west region of São Paulo up to the states of Mato Grosso do Sul and Mato Grosso, Brazil (Fig. 185); the distribution range of P. occidentalis partially covers the biomes Atlantic Forest, Cerrado, and Pantanal.
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 63-65, DOI: 10.5852/ejt.2023.867.2109, http://zenodo.org/record/7891021