Pseudonannolene albiventris Schubart, 1952

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 : 19-20

Pseudonannolene albiventris Schubart, 1952

Figs 41–43 , 163A , 167A , 177A , 180 ; Supp. file 4: Figs 218D, 219A

Pseudonannolene albiventris Schubart, 1952: 408 , figs 5–8.

Pseudonannolene albiventris – Jeekel 2004: 88. — Gallo & Bichuette 2017: 4; 2020: 36.

cf. Pseudonannolene albiventris – Gallo & Bichuette 2017: 6, figs 4f, 5f, 9h.

Diagnosis

Males of P. albiventris resemble those of P. caulleryi Brölemann, 1929 and P. mesai Fontanetti, 2000 by having a large trunk of the telopodite ( Fig. 42D–F ), but differing by the subrectangular coxae on the first leg-pair ( Fig. 42A ); suboval penis ( Fig. 42C ); solenomere with short and rounded ectal process ( Fig. 42D–F ).

Etymology

Named after the Latin adjective ‘ albus ’ = ‘white’, plus the masculine noun ‘ venter ’, referring to the whitish ventral region of the body rings ( Schubart 1952).

Material examined

Holotype BRAZIL • ♂ [gonopods, gnathochilarium, first and second leg-pair on microscope slides]; São Paulo, Analândia, Fazenda Nova América ; [-22.129298, -47.662635]; 665 m a.s.l.; 7 Mar. 1944; O. Schubart leg.; MZSP.

Paratypes (total: 3 ♂♂, 1 ♀, 1 immature) BRAZIL • 1 ♂; same collection data as for holotype; MZSP 1008 • 2 ♂♂, 1 ♀, 1 immature; same collection data as for holotype; MZSP .

Other material (total: 12 ♂♂, 16 ♀♀, 23 immatures)

BRAZIL – São Paulo • 1 ♂, 1 ♀; same collection data as for holotype; MZSP 1007 • 1 ♂; same collection data as for holotype; MZSP 1008 • 2 ♂♂, 1 ♀, 1 ♀ immature; same collection data as for holotype; MZSP • 1 ♂; Piracicaba ; [-22.735152, -47.647892]; 532 m a.s.l.; 24 Oct. 1949; F.P. Monteiro leg., MZSP • 1 ♂; same collection data as for preceding; MZSP • 1 ♀ immature, 1 ♂ immature; same collection data as for preceding; MZSP • 10 ♀♀; same collection data as for preceding; MZSP • 2 ♀♀, 8 ♀♀ immatures; Cordeirópolis, Estação Experimental de Cordeirópolis (= Centro de Citricultura Sylvio Moreira ); [-22.462172, -47.399190]; 737 m a.s.l.; Feb. 1952; L.G. Lordello leg.; MZSP • 1 ♂; same collection data as for preceding; MZSP • 1 ♂; same collection data as for preceding; MZSP • 2 ♂♂, 1 ♀, 8 ♀♀ immatures; same collection data as for preceding; MZSP • 2 ♂♂, 1 ♀, 2 ♀♀ immatures; same collection data as for preceding; Dec. 1952; MZSP • 1 ♀ immature; same collection data as for preceding; Feb. 1953; MZSP • 1 ♀ immature; Campinas, Viracopos ; [-22.968361, -47.153399]; 619 m a.s.l.; Feb. 1953; L.G. Lordello leg.; MZSP .

Descriptive notes

MEASUREMENTS. 59–63 body rings (1–2 apodous + telson). Males: body length 35–45 mm; maximum midbody diameter 2.4–2.5 mm. Females: body length 35–45 mm; maximum midbody diameter 2.3– 3.1 mm.

COLOR. Body color brownish; metazonites with a medial brown band and a posterior lighter band; antennae and legs light brown ( Fig. 41 ).

HEAD. Antennae short ( Fig. 163A ), just reaching back to end of ring 4 when extended dorsally; antennomeres goblet-shaped; 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 broadly rounded, with ca 4 striae, slightly curved ectad ( Fig. 41A ). Very faintly constriction between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae from ca ⅓ length below ozopore. Anterior sternum subrectangular, with 8 faint transverse striae ( Fig. 167A ).

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 42A , 43B ); prefemoral process (prf) as long as half of prefemur, subcylindrical, densely setose up to its median region ( Fig. 42B ); remaining podomeres with setae along mesal region.

SECOND LEG-PAIR OF MALES. Coxa (cx) large and rounded; penis (pn) located at proximal region, suboval, extended basally ( Figs 42C , 43E–F ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, with the base arched; slightly flattened antero-posteriorly ( Fig. 42E–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) rounded. Telopodite (tp) almost as wide as gcx ( Figs 42D , 43D ); solenomere (sl) with apicomesal process (amp) subtriangular, larger; ectal process (ep) rounded; sa located at mesal portion, slightly visible apically. Internal branch (ib) subtriangular, narrow, surrounding basally tp as a shield; ib with setae along its entire margin exceeding apically seminal region of sl ( Fig. 42D–F ).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 177A ); internal valve subtriangular; operculum narrow, curved medially; external valve wide, subtriangular.

Distribution

Known from the central-west region of the state of São Paulo, Brazil ( Fig. 180 ); occurring in the Cerrado biome (tropical savanna ecoregion) and in second-growth forests in the region.

Figures

Fig. 41. Pseudonannolene albiventris Schubart, 1952, ♂ (MZSP 1007), in lateral view. A. Anterior region. B. Posterior region. Scale bars: A = 0.1 mm; B = 1 mm.

Fig. 42. Pseudonannolene albiventris Schubart, 1952, ♂ (MZSP 1007). 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 = 0.5 mm; B, D–F = 0.2 mm.

Fig. 43.PseudonannolenealbiventrisSchubart, 1952, ♂ (MZSP).A. Sexualstructures andgnathochilarium of type material mounted on microscope slide. B. First leg-pair. C. Gonopods, in oral view. D. Detail of telopodites, in oral view. E. Second leg-pair. F. Detail of penis. Abbreviations: see Material and methods. Images not to scale.

Fig. 163. Stereoscopic images of antennae of species ofPseudonannolene Silvestri, 1895.A. P. albiventris Schubart, 1952. B. P. anapophysis Fontanetti, 1996. C. P. alata sp. nov. D. P. buhrnheimi Schubart, 1960. E. P. caatinga Iniesta & Ferreira, 2014. F. P. erikae Iniesta & Ferreira, 2014. G. P. fontanettiae Iniesta & Ferreira, 2014. H. P. halophila Schubart, 1949. I. P. inops Brölemann, 1929. J. P. leopoldoi Iniesta & Ferreira, 2014. K. P. longicornis (Porat, 1888). L. P. magna Udulutsch & Pietrobon, 2003. M. P. maritima Schubart, 1949. N. P. mesai Fontanetti, 2000. O. P. microzoporus Mauriès, 1987. Images not to scale.

Fig. 167. Stereoscopic images of gnathochilarium and anterior sternum of species of Pseudonannolene Silvestri, 1895. A. P. albiventris Schubart, 1952. B. P. ambuatinga Iniesta & Ferreira, 2013. C. P. anapophysis Fontanetti, 1996. D. P. buhrnheimi Schubart, 1960. E. P. caatinga Iniesta & Ferreira, 2014. Images not to scale.

Fig. 177. Stereoscopic images of left vulva of species of Pseudonannolene Silvestri, 1895, in oral view. A. P. albiventris Schubart, 1952. B. P. alegrensis Silvestri, 1897. C. P. ambuatinga Iniesta & Ferreira, 2013. D. P. anapophysis Fontanetti, 1996. E. P. buhrnheimi Schubart, 1960. F. P. caatinga Iniesta & Ferreira, 2014. G. P. callipyge Brölemann, 1902. H. P. erikae Iniesta & Ferreira, 2014. I. P. fontanettiae Iniesta & Ferreira, 2014. J. P. halophila Schubart, 1949. K. P. imbirensis Fontanetti, 1996. L. P. inops Brölemann, 1929. M. P. leucocephalus Schubart, 1944. N. P. longicornis (Porat, 1888). O. P. lundi Iniesta & Ferreira, 2015. Images not to scale.

Fig. 180. Distribution map of the species Pseudonannolene albiventris Schubart, 1952, P. alegrensis Silvestri, 1897, P. ambuatinga Iniesta & Ferreira, 2013, P. anapophysis Fontanetti, 1996, and P. borelli Silvestri, 1895.