Portanus kaonashi sp. nov.

(Figures 1–12)

Type locality. Parque Estadual do Cristalino, Novo Mundo, Mato Grosso, Brasil.

Diagnosis. Male: Pygofer (Figs 6–7) subtriangular; with pair of spiniform processes on dorsal margin turned inwardly. Aedeagus (Figs 11–12) with shaft subcylindrical and curved posteriorly; atrium with robust median tubercular projection and dorsad to it a pair of slender processes directed laterodorsally; anterior margin more sclerotized than remainder of aedeagus, with a pair of longitudinal keels; with broad dorsal subrectangular process, posterior margin of the process with many small and irregular denticles. Female: unknown.

Measurements (mm). Male (2): body length, 4.4–4.5; crown length, 0.5; transocular width, 1.1; interocular width, 0.5–0.6; maximum pronotum width, 1.1.

Coloration. Crown (Fig. 1) brown, with pair of dark brown spots near median line. Ocelli red. Face (Figs 3–4) with lorum ivory and gena pale yellow. Pronotum (Fig. 1) dark brown with some brown spots. Mesonotum (Fig. 1) brown with pair of large anterolateral triangular dark brown maculae. Forewing (Fig. 5) translucent yellowish-brown; veins brown with some pale yellow spots; costal margin and apical cells translucent brown; costal margin with three pale yellow maculae. Thoracic venter pale yellow. Legs mostly pale yellow; apex of metafemur and second tarsomere brown.

Description. Head (Figs 1–4), in dorsal view, with anterior margin angulate; crown median length subequal to interocular and half of transocular width; lateral frontal suture approaching the ocelli; epicranial suture not extending to imaginary transverse line between ocelli; texture shagreen. Pronotum (Fig. 1) as wide as transocular width; lateral margin angulate; posterior margin straight; texture smooth with transverse striae. Mesonotum (Fig. 1) shagreen. Forewing (Fig. 5) with distinct venation; inner anteapical cell open; median anteapical cell as long as outer one. Metatibia with rows AD with 11 long cucullate setae, intercalated by 1–3 shorter setae; PD with 10 long cucullate setae, intercalated by 0-1 shorter cucullate ones, most of PD setae length twice longer than AD setae. Hind leg with first tarsomere slightly longer than combined length of second and third; posterior margins with three, two, and zero platellae, respectively, between pair of outer slightly longer cucullate setae.

Male terminalia. Pygofer lobe (Figs 7–6), in lateral view, longer than high, subtriangular; posterior margin rounded; macrosetae distributed on posterior half; some microsetae at posterior half; in posterior view, with pair of spiniform processes on dorsal margin turned inwardly; apex turned inwardly. Valve (Fig. 8), in ventral view, wider than long; anterior margin straight and posterior margin rounded; lateral margins angulate. Subgenital plate, in lateral view, extending almost to pygofer apex; apices slightly upturned; in ventral view (Fig. 8), basal third with transverse unpigmented line; with 4-6 uniseriate robust macrosetae and several fine long microsetae. Connective (Fig. 9), in dorsal view, Y-shaped; anterior margin without basiventral median process; apex expanded, not fused with aedeagus preatrium. Style (Figs 9–10) with apodeme (basal portion anterad of connective articulation) long, one-third of style total length; apical portion enlarged and appearing bifid because the preapical lobe robust, elongate, and directed posteriorly; apex with acute process and some fine microsetae; in lateral view, subcylindrical and sinuous. Aedeagus (Figs 11–12), in lateral view, with dorsal apodeme membranous with apex sclerotized; anterior margin more sclerotized than remainder of aedeagus, with pair of longitudinal keels; broad dorsal subrectangular process with posterior margin with many small and irregular denticles; atrium with robust median tubercular projection and dorsad to it a pair of slender processes directed laterodorsally; shaft subcylindrical and curved posteriorly.Anal tube (Fig. 6) with segment X conical; length one-half of pygofer dorsal margin length.

Remarks. Portanus kaonashi sp. nov. is similar to Portanus linnavuorii Kramer, 1961 in coloration pattern and shape of pygofer and styles. However, it can be distinguished from the latter and other Portanus species by the following features: (1) male pygofer with pair of spines on dorsal margin turned inwardly (Fig. 7); (2) aedeagus anterior margin with pair of longitudinal keels (Figs 11–12); (3) broad dorsal subrectangular process with posterior margin with many small and irregular denticles (Fig. 11); and (4) atrium with robust median tubercular projection and dorsad to it a pair of slender processes directed laterodorsally (Figs 11–12).

Etymology. The species epithet is a reference to the character “No-Face”, in Japanese Kaonashi, from the animation Spirited Away by Studio Ghibli. The general shape of the aedeagus resembles the profile of this character. The species epithet is treated as a noun in apposition.

Holotype. Male, “ BRASIL, Mato Grosso, Novo \ Mundo, Parque Estadual do \ Cristalino. 9°27’6.1”S \ 55°50’22.6”W, 240m, 21- \ 25.vi.2017, Malaise, Cavichioli, \ Melo, Domahovski & Muniz ” (DZUP). Paratype. 1 male, same data as holotype, “DNA Voucher: \ Entomologia, DZRJ \ ENT4753 ” (DZUP).