Pseudonannolene alata sp. nov.

urn:lsid:zoobank.org:act: C18F0776-3DA0-4571-91C9-0584F601B97F

Figs 145–146, 163C, 165C, 175B, 179K, 190; Supp. file 4: Fig. 215B

Diagnosis

Males of P. alata sp. nov. can be distinguished from those of all other species of Pseudonannolene by having a large, rounded projection on the telopodite (Fig. 146D).

Etymology

The species epithet is derived from the Latin adjective ‘ alata ’ = ‘winged’, in reference to the ectal projection on the telopodite.

Material examined

Holotype BRAZIL • ♂; Santa Catarina, Florianópolis, Ilha do Arvoredo; [-27.281906, -48.366245]; 130 m a.s.l.; 15 May 2018; R.S. Bouzan leg.; IBSP 7874.

Paratype (total: 1 ♀) BRAZIL • 1 ♀; same collection data as for holotype; IBSP 7875 .

Referred non-type material (total: 5 ♂♂, 12 ♀♀; 5 immatures)

BRAZIL – Santa Catarina • 6 ♀♀, 5 immatures; Florianópolis, Ilha do Arvoredo; [-27.281094, -48.366610]; 130 m a.s.l.; 15 May 2018; R.S. Bouzan leg.; IBSP 7876 • 4 ♀♀; same collection data as for preceding; IBSP 7877 • 2 ♀♀; same collection data as for preceding; IBSP 7878 • 5 ♂♂; same collection data as for preceding; IBSP 7879 .

Description

MEASUREMENTS. 53–55 body rings (1–2 apodous + telson). Males: body length 43.8–64.8 mm; maximum midbody diameter 3.2–4.5 mm. Females: body length 56.5–72.2 mm; maximum midbody diameter 4–5.4 mm.

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

HEAD. Antennae short (Fig. 163C), 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 40 ommatidia in 6 rows.

BODY RINGS. Collum with lateral lobes rounded, with ca 6 deep striae, strongly curved ectad (Fig. 145A). Very faintly constricted between prozonite and metazonite; prozonites smooth; metazonites laterally with transverse striae below ozopore. Anterior sterna in midbody rings subrectangular, without transverse striae (Fig. 175B).

FIRST LEG-PAIR OF MALES. Coxae (cx) elongated (as long as the sum of remaining podomere lengths), subtriangular, with the base slightly arched and expanded, densely setose mainly on distal region (Fig. 146A); prefemoral process (prf) as wide as half of prefemur, subcylindrical, densely setose along in its entire extension (Fig. 146B); 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 (Fig. 146C); prefemur compressed dorsoventrally; remaining podomeres setose.

GONOPODS. Gonocoxa (gcx) elongated, almost twice as long as telopodite, with the base slightly arched; antero-posteriorly flattened (Fig. 146D–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) inconspicuous. Telopodite (tp) almost as wide as gcx (Figs 146D, 215B), with large and rounded laterad projection; solenomere (sl) expanded laterad, rounded, with apicomesal process (amp) subtriangular; ectal process absent; sa located at mesal portion, visible apically. Internal branch (ib) subtriangular, narrow, surrounding basally tp as a shield; ib with setae along its entire margin nearly exceeding apically seminal region of sl (Fig. 146D–F).

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

Distribution

Known only from the type locality Ilha do Arvoredo, Florianópolis, Santa Catarina State, Brazil (Fig. 190).