Pseudonannolene buhrnheimi Schubart, 1960

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 : 27-29

Pseudonannolene buhrnheimi Schubart, 1960

Figs 28D , 53–55 , 163D , 165E , 167D , 177E , 181 ; Supp. file 4: Figs 200E, 202F, 214B, 217A, 219D

Pseudonannolene buhrnheimi Schubart, 1960: 79 .

Pseudonannolene buhrnheimi – Jeekel 2004: 88.

Diagnosis

Pseudonannolene buhrnheimi resembles P. granulata sp. nov. by having metazonites granulated ( Fig. 53 ) and epiproct with subtriangular process ( Figs 53B , 54 ), but differs by the absence of proximal projections on the stipes ( Fig. 167D ).

Etymology

Patronym honoring the collector Paulo Bührnheim ( Schubart 1960).

Material examined

Holotype BRAZIL • ♂ [gonopods and first leg-pair on microscope slides]; Rio de Janeiro, Santa Teresa ; [-22.942260, -43.212212]; 16 Oct. 1960; O. Schubart, J. Schubart and P. Bührnheim leg.; MZSP.

Paratypes (total: 6 ♂♂, 3 ♀♀, 2 immatures) BRAZIL • 6 ♂♂, 3 ♀♀, 2 immatures; same collection data as for holotype; MZSP .

Other material (total: 4 ♂♂, 7 ♀♀, 3 immatures)

BRAZIL – Rio de Janeiro • 1 ♂; Cachoeiras do Macacu, Reserva Ecológica Guapiassú ; [-22.452806, -42.770293]; 34 m a.s.l.; 8–12 Oct. 2001; Equipe Biota leg.; IBSP 2402 • 1 ♀; same collection data as for preceding; IBSP 2406 • 1 ♀; same collection data as for preceding; IBSP 2403 • 1 ♀; same collection data as for preceding; IBSP 2397 • 1 ♀, 1 ♀ immature; same collection data as for preceding; IBSP 2404 ; • 1 ♂, 1 ♀; same collection data as for preceding; IBSP 2385 • 1 ♂, 1 ♀ immature; same collection data as for preceding; IBSP 2399 • 1 ♀, 1 ♂ immature; same collection data as for preceding; IBSP 2384 • 1 ♂, 1 ♀; Rio de Janeiro, Santa Teresa ; [-22.942260, -43.212212]; 16 Oct. 1960; O. Schubart, J. Schubart and P. Bührnheim leg.; MZSP .

Descriptive notes

MEASUREMENTS. 54–60 body rings (1–2 apodous + telson). Males: body length 55.9–69.4 mm; maximum midbody diameter 3–3.9 mm. Females: body length 67.6–76.6 mm; maximum midbody diameter 3.9– 4.8 mm.

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

HEAD. Antennae long ( Fig. 163D ), just reaching back to end of ring 6 when extended dorsally; antennomeres elongated; relative antennomere lengths 1<2<3>4>5=6>7. Mandibular cardo with ventral margin narrow. Ommatidial cluster well-developed, elliptical; ca 40 ommatidia in 5 rows.

BODY RINGS. Collum with lateral lobes rounded, with ca 9 striae, slightly curved ectad ( Fig. 53A ). Well demarcated constriction between prozonite and metazonite ( Fig. 53B ); prozonites smooth; metazonites granulated and laterally with transverse striae above ozopore. Anterior sterna in midbody rings subrectangular, without transverse striae ( Fig. 167D ). Epiproct with a long triangular process ( Fig. 54 ).

FIRST LEG-PAIR OF MALES. Coxae (cx) short (less than half of remaining podomere lengths), subtriangular, with the base arched, densely setose mainly on distal region ( Fig. 55A ); prefemoral process (prf) short (less than half of prefemur), subcylindrical, densely setose up to its median region ( Fig. 55B ); remaining podomeres with setae along the mesal region.

SECOND LEG-PAIR OF MALES. Coxa (cx) large and rounded; penis (pn) located at proximal region, circle-shaped ( Fig. 55C ); 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. 55D–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 ( Fig. 55D ); solenomere (sl) with apicomesal process (amp) subtriangular, larger; ectal process (ep) subtriangular, separating from amp by shallow notch; sa located at mesal portion, slightly visible apically. Internal branch (ib) subtriangular, narrow, slightly curved ectad at midlength, surrounding base of tp as a shield; ib with setae along its entire margin exceeding apically seminal region of sl ( Fig. 55D–F ).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 177E ); internal valve subtriangular, with mesal region rounded; operculum narrow; external valve wide, subtriangular.

Distribution

Known from the Atlantic Forest in the southern and central regions of Rio de Janeiro State, Brazil ( Fig. 181 ).

Figures

Fig. 28. SEM images of posterior rings. A–C. Pseudonannolene robsoni Iniesta & Ferreira, 2014 (IBSP 3506). D. P. buhrnheimi Schubart, 1960 (IBSP 2397). Scale bars: A, C–D = 1 mm; B = 0.5 mm.

Fig. 53. Pseudonannolene buhrnheimi Schubart, 1960, ♀ (IBSP 2397), in lateral view. A. Anterior region. B. Posterior region. Scale bars = 1 mm.

Fig. 54. Pseudonannolene buhrnheimi Schubart, 1960, ♀ (IBSP 2397), posterior region. A. Ventral view. B. Lateral view. Detail of epiproct with triangular process. Scale bars = 0.25 mm.

Fig. 55. Pseudonannolene buhrnheimi Schubart, 1960, ♂ (IBSP 2399). 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. 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. 165. Stereoscopic images of midbody legs of species of Pseudonannolene Silvestri, 1895. A. P. ambuatinga Iniesta & Ferreira, 2013. B. P. anapophysis Fontanetti, 1996. C. P. alata sp. nov. D. P. bovei Silvestri, 1895. E. P. buhrnheimi Schubart, 1960. F. P. caatinga Iniesta & Ferreira, 2014. G. P. callipyge Brölemann, 1902. H. P. curtipes Schubart, 1960. I. P. fontanettiae Iniesta & Ferreira, 2014. J. P. halophila Schubart, 1949. K. P. imbirensis Fontanetti, 1996. L. P. inops Brölemann, 1929. M, P. leopoldoi Iniesta & Ferreira, 2014. N. P. leucomelas Schubart, 1947. O. P. longicornis (Porat, 1888). P. P. lundi Iniesta & Ferreira, 2015. Q. P. magna Udulutsch & Pietrobon, 2003. R. P. maritima Schubart, 1949. 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. 181. Distribution map of the species Pseudonannolene bovei Silvestri, 1895, P. brevis Silvestri, 1902, P. buhrnheimi Schubart, 1960, P. caatinga Iniesta & Ferreira, 2014, and P. callipyge Brölemann, 1902.