Portanus cornutus sp. nov.

(Figs 1–19)

Diagnosis. Crown (Fig. 1) orange-brown with transverse white stripe at posterior margin connected to four short longitudinal white stripes. Forewings (Fig. 5) with longitudinal transcommissural ivory stripe connecting two large ivory spots. Pygofer lobe (Fig. 6) long with paired ventral processes with apices curved ventrally. Aedeagus (Fig. 12) with single long spiniform bifid process arising ventrally near base and extending posteriorly along haft to apex.

Measurements (mm). Male holotype: total length 5.05; crown length 0.39; transocular width 1.12; interocular width 0.54; maximum pronotal width 1.11; maximum pronotal length 0.62; forewing length 4.06. Male paratypes (n=4)/Female paratypes (n=8): total length 5.17/5.88; crown length 0.41/0.45; transocular width 1.19/1.30; interocular width 0.58/0.64; maximum pronotal width 1.18/1.29; maximum pronotal length 0.62/0.65; forewing length 4.18/4.71.

Coloration. Dorsum (Fig. 1) mostly orange-brown with ivory markings. Crown (Fig. 1) orange-brown with transverse stripe at posterior margin connected to four short longitudinal stripes and pair of interocellar spots, ivory. Ocelli yellowish-white. Eyes (Fig. 2) reddish-white (red in ethanol). Pronotum (Fig. 1) with ivory markings forming a distinct pair of longitudinal lateral bands (holotype with narrower median stripe also). Mesonotum with a pair of anterior triangular lateral orange maculae. Scutellum ivory. Forewings (Fig. 5) translucent; clavus with transcommisural ivory longitudinal band throughout most of length, broadened into two large spots at middle and apex of band with small ivory spots along claval suture; corium with two transverse fine stripes originating from costal margin and extending through discal and anteapical cells, basal veins of apical cells, and apex, dark brown. Legs pale yellow with apices of tarsi brown. Venter (Figs 3–4) pale yellow.

External morphology. Crown (Fig. 1) with median length three-tenths transocular width; anterior margin angulate; lateral frontal sutures not reaching ocelli. Pronotum (Fig. 1) slightly narrower than transocular width; dorsolateral carina (Fig. 2) conspicuous; posterior margin slightly concave. Forewing (Fig. 5) with conspicuous venation; three closed anteapical cells, median one slightly longer than others; first and fourth apical cells subquadrangular, second and third subrectangular. Hind leg with femoral setal formula 2+1+1; tibia with rows AD and PD both with a row of long cucullate setae (10 in holotype) intercalated by few shorter cucullate ones at AD and single longer one at PD.

Male genitalia. Pygofer lobe (Fig. 6), in lateral view, longer than high; long basiventral spiniform process extending slightly beyond pygofer apex and curved ventrally; posterior margin rounded lobe; macrosetae distributed at dorsal fourth. Valve (Fig. 8), in ventral view, subrectangular and wide; posterior margin straight. Subgenital plate (Fig. 9), in lateral view, extending posteriorly farther than pygofer apex; basal third with transverse unpigmented line; ventral surface of apical four-fifths with uniseriate row of robust and long macrosetae (seven in holotype) and several long and fine microsetae; apex, in lateral view, slightly turned dorsally. Connective (Fig. 10), in dorsal view, Y-shaped; basiventral process short. Style (Fig. 10), in dorsal view, long and narrow, extending posteriorly much beyond connective apex; with apical third (Fig. 11) wide and appearing bifid because of an elongate and robust preapical lobe. Aedeagus (Fig. 12), in lateral view, with preatrium well developed; dorsal apodemes short and sinuous; atrium base with ventral long and spiniform bifid process extending posteriorly to shaft apex; shaft long and tubular, without processes. Anal tube (Fig. 7) with segment X long and without processes.

Female genitalia. Sternite VII (Fig. 13), in ventral view, approximately rectangular; posterior margin sinuous with three rounded concavities. Pygofer lobe (Fig. 14), in lateral view, as long as high; subtriangular; macrosetae distributed on posterior two-thirds; apex angulate. First valvifer (Fig. 15) subquadrangular. First valvula (Figs 15–16), in lateral view, expanded at apical third; dorsal sculptured area at apical third strigate; ventral sculptured area at apex strigate; apex acute. Second valvifer (Fig. 17) approximately rectangular; small sclerotized dentiform process at apical two-thirds of posterior margin. Second valvula (Figs 17–18), in lateral view, expanded at apical half; with approximately 25 separate triangular teeth without denticles (n=1); without preapical prominence; ventroapical margin smooth. Gonoplac (Fig. 19) expanded at apical half; apex rounded with approximately two macrosetae (n=1).

Type material. Holotype: ♂, “ BRASIL: RJ, Itatiaia, PNI, Setor \ Lago Azul, Mata, PNI-M3B.\ coord. 22°27’01.10” S \ 44°36’55.30” W, 830m, a.s.l. \ BIOTA FAPERJ \ 1.out- 2.nov.2015 \ Coleta-04”, MNRJ.

Paratypes: 1 ♂, same label data as holotype, DZRJ (DZRJ-AUCH-0267). 5 ♀ and 1 ♂, “ BRASIL: PR, São José dos\ Pinhais, Rep [Represa]. Guaricana,\ 25.7176°S 48.964°W,\ 760m, 07-26.III.2018,\ Malaise, Muniz, Melo,\ Cavichioli & Domahovski”, DZUP. 1 ♀ and 1 ♂, same label data as preceding except “ 25.7272°S 48.9498°W, 410m, 26.XII.2017 -09.1.2018”, DZUP. 2 ♀ and 1 ♂, same label data as preceding except “ 23.XI-12.XII.2017 ”, DZUP. 1 ♀ and 1 ♂, “ BRASIL, Paraná, Antonina. \ RPPN Guaricica, Trilha da \ Pantera, \ 25 o 18’41”S 48 o 39’41”W, 170 m \ 23-27.x.2017, Malaise. \ Entomologia, UFPR ”, DZRJ (DZRJ-AUCH-0314-314, DNA Voucher ENT 4753).

Etymology. The species epithet derives from the Latin word cornu, meaning horn, in allusion to ivory maculae at the posterior margin of the crown, which resemble horns.

Remarks. Portanus cornutus sp. nov. is similar to Portanus marginatus Carvalho & Cavichioli, 2003 externally (Fig. 1). It is also similar to Portanus restingalis Felix & Mejdalani, 2016, in having the (1) valve (Fig. 8) broad and subrectangular, and (2) aedeagus (Fig. 12) with median ventral portion of shaft with pair of long processes extending posteriorly. However, it can be distinguished from the latter and other Portanus species because its (1) crown (Fig. 1) has four short longitudinal white stripes on posterior margin, (2) forewings (Fig. 5) have a longitudinal white transcommisural stripe with two large white spots, (3) pygofer (Fig. 6) lobe is long and has processes curved ventrally, and (4) aedeagal (Fig. 12) processes do not extend beyond the shaft apex.

This species was collected at lower altitudes at PNI (830 m) and at 410 and 760 m at Paraná State.