Pseudonannolene pusilla Silvestri, 1895

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 : 71-73

publication ID

https://doi.org/ 10.5852/ejt.2023.867.2109

publication LSID

lsid:zoobank.org:pub:8DEF295C-A8B1-4A6B-B873-B30949F64E07

DOI

https://doi.org/10.5281/zenodo.7907917

persistent identifier

https://treatment.plazi.org/id/03F887BA-1375-B129-4D7E-F97AFA8A574F

treatment provided by

Felipe

scientific name

Pseudonannolene pusilla Silvestri, 1895
status

 

Pseudonannolene pusilla Silvestri, 1895 View in CoL

Figs 111–112 View Fig View Fig , 176A View Fig , 178H View Fig , 186 View Fig

Pseudonannolene pusilla Silvestri, 1895b: 7 View in CoL , fig. 13.

Pseudonannolene pusilla View in CoL – Silvestri 1902: 23. — Schubart 1958: 240. — Viggiani 1973: 367. — Jeekel 2004: 90. — Golovatch et al. 2005: 279. — Iniesta & Ferreira 2013a: 92; 2013c: 79.

Diagnosis

Males of P. pusilla resemble those of P. morettii sp. nov. by having short coxae on the first leg-pair with a constriction at about midlength ( Fig. 112A View Fig ), but differing by the absence of long scattered setae on the mentum and stipes ( Fig. 176A View Fig ); solenomere short and subtriangular ( Fig. 112D View Fig ).

Etymology

Named after the Latin adjective ‘ pusillus ’ (feminine ‘ pusilla ’) = ‘very little’, ‘tiny’. Unspecified in the original description.

Material examined (total: 5 ♂♂, 2 ♀♀, 3 immatures)

BRAZIL – Mato Grosso • 2 ♂♂; Pindaíba , Barra das Garças; [-15.881182, -52.238738]; 337 m a.s.l.; 19–31 Jan. 1998; M.E.V. Callefo leg.; IBSP 13390 View Materials GoogleMaps 3 ♂♂, 2 ♀♀, 3 immatures; same collection data as for preceding; IBSP 13391 View Materials GoogleMaps .

Descriptive notes

MEASUREMENTS. 55–57 body rings (1 apodous + telson). Males: body length 39.7 mm; maximum midbody diameter 2.4 mm. Females: body length 43.1–44 mm; maximum midbody diameter 3.7–4 mm.

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

HEAD. Antennae long ( Fig. 111A View Fig ), 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 12 striae, strongly curved ectad ( Fig. 111A View Fig ). Very faintly constricted between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae above ozopore in anterior body rings. Anterior sterna in midbody rings subrectangular, without transverse striae ( Fig. 176A View Fig ).

FIRST LEG-PAIR OF MALES. Coxae (cx) short (less than half of remaining podomere lengths), subtriangular, with the base strongly arched and constricted medially, sparsely setose ( Fig. 112A View Fig ); prefemoral process (prf) less than half of prefemur, subcylindrical, densely setose up to its median region ( Fig. 112B View Fig ); remaining podomeres with setae along the mesal region.

SECOND LEG-PAIR OF MALES. Coxa (cx) rounded; penis (pn) located at proximal region, rounded, not extended basally ( Fig. 112C View Fig ); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, twice longer than telopodite, with the base arched; antero-posteriorly flattened ( Fig. 112D–F View Fig ); with rows of papillae mesally. Seminal groove (sg) curved; arising medially on mesal cavity and terminating apically on the seminal apophysis (sa). Shoulder (sh) inconspicuous. Telopodite (tp) almost as wide as gcx ( Fig. 112D View Fig ); solenomere (sl) with small squamous region; apicomesal process (amp) subtriangular; ectal process absent; sa located at mesal portion, slightly visible apically in oral view ( Fig. 112F View Fig ). Internal branch (ib) subtriangular, narrow and foliaceous, surrounding basally tp as a shield; ib with setae along its entire margin nearly not exceeding apically seminal region of sl ( Fig. 112D–F View Fig ).

VULVAE. As typical for the genus. Bursa subtriangular, glabrous ( Fig. 178H View Fig ); internal valve subtriangular, with its sides having the same length; operculum slightly curved ectad; external valve large, subtriangular.

Distribution

Known from Cerrado biome in the west region of Mato Grosso State, Brazil; other records from the literature for the Brazilian states of Mato Grosso do Sul and Goiás, and region of the Chaco in Argentina and Paraguay ( Fig. 186 View Fig ).

Comments

The type material was described by Silvestri (1895b) and supposedly deposited at the Museo Regionale Scienze Naturali, Torino, Italy (MRSN) ( Viggiani 1973: 367), but was not found. Nevertheless, neartopotypes from Mato Grosso were examined ( Fig. 186 View Fig ). Other specimens from Brazil (Goiás, Mato Grosso, and Mato Grosso do Sul) and Paraguay (Asunción) were recorded by Silvestri (1902).

Kingdom

Animalia

Phylum

Arthropoda

Class

Diplopoda

Order

Spirostreptida

SubOrder

Cambalidea

Family

Pseudonannolenidae

SubFamily

Pseudonannoleninae

Genus

Pseudonannolene

Loc

Pseudonannolene pusilla Silvestri, 1895

Iniesta, Luiz Felipe Moretti, Bouzan, Rodrigo Salvador & Brescovit, Antonio Domingos 2023
2023
Loc

Pseudonannolene pusilla

Iniesta L. F. & Ferreira R. L. 2013: 92
Iniesta L. F. & Ferreira R. L. 2013: 79
Golovatch S. I. & Hoffman R. L. & Adis J. & Marques A. D. & Raizer J. & Silva F. H. O. & Ribeiro R. A. K. & Silva J. L. & Pinheiro T. G. 2005: 279
Jeekel C. A. W. 2004: 90
Viggiani V. 1973: 367
Schubart O. 1958: 240
Silvestri F. 1902: 23
1902
Loc

Pseudonannolene pusilla

Silvestri F. 1895: 7
1895
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