Portanus chihiro, Prando & Cavichioli & Takiya, 2025

Portanus chihiro View in CoL sp. nov.

( Figures 25–42 View FIGURES 25–35 View FIGURES 36–42 )

Type locality. Serra do Cachimbo , Pará, Brazil .

Diagnosis. Male: Pygofer ( Fig. 30 View FIGURES 25–35 ), in lateral view, subquadrate; posterior margin truncate. Aedeagus ( Figs 34– 35 View FIGURES 25–35 ) shaft strongly curved at basal half; apex curved ventrally with numerous spiniform processes. Female: Sternite VII ( Fig. 36 View FIGURES 36–42 ) approximately rectangular; posterior margin with prominent rounded median lobe.

Measurements (mm). Males (n = 6)/females (n = 2): body length, 4.5–4.8/4.6–4.7; crown length, 0.5/0.5; transocular width, 1.2/1.2; interocular width, 0.5–0.6/0.5; maximum pronotum width, 1.1–1.2/1.1–1.2.

Coloration. Crown ( Fig. 25 View FIGURES 25–35 ) brown, with several small pale yellow spots; basal two-thirds with longitudinal reddish-brown line near epicranial suture. Ocelli red. Face ( Figs 27–28 View FIGURES 25–35 ) with lorum ivory and gena pale brown. Pronotum ( Fig. 25 View FIGURES 25–35 ) brown, with several pale yellow spots. Mesonotum pale brown, with pair of large anterolateral triangular dark brown maculae. Scutellum pale brown to ivory. Forewing ( Fig. 29 View FIGURES 25–35 ) translucent yellowish-brown; veins dark brown with alternating ivory spots; three dark brown maculae along costal margin; apex dark brown. Thoracic venter ivory. Legs ivory; middle of metatibia and first and second metatarsomeres brown.

Description. Head ( Figs 25–28 View FIGURES 25–35 ), in dorsal view, with anterior margin angulate; crown median length subequal to interocular and approximately half of transocular width; lateral frontal suture approaching the ocelli; epicranial suture not extending to imaginary transverse line between ocelli; texture shagreen.Pronotum ( Fig. 25 View FIGURES 25–35 ) width subequal to transocular width; lateral margin angulate; posterior margin almost straight; texture smooth with transverse striae. Mesonotum shagreen. Forewing ( Fig. 29 View FIGURES 25–35 ) with distinct venation; with three closed anteapical cells, median anteapical cell slightly longer than the other ones. Metatibia with row AD with 9-11 long cucullate setae intercalated by 1-3 shorter setae; PD row with 9-10 very long cucullate setae intercalated by 0-2 smaller long cucullate seta. Hind leg with first tarsomere slightly longer than combined length of second and third; posterior margins with three, two, and zero platellae, respectively, between a pair of outer slightly longer cucullate setae.

Male terminalia. Pygofer lobe ( Fig. 30 View FIGURES 25–35 ), in lateral view, as long as high; subquadrate; posterior margin truncate; macrosetae distributed dorsally; without processes. Valve ( Fig. 31 View FIGURES 25–35 ), in ventral view, wider than long; anterior margin straight; posterior margin rounded; lateral margins angulate. Subgenital plate ( Fig. 31 View FIGURES 25–35 ) extending posteriorly farther than pygofer apex; apical two-thirds upturned; in ventral view, basal third with transverse unpigmented line; with 3–5 robust macrosetae mostly uniseriate and many long and fine microsetae at apical half. Connective ( Fig. 32 View FIGURES 25–35 ), in dorsal view, Y-shaped; anterior margin with short median basiventral triangular projection; apex bilobed, not fused with aedeagus preatrium. Style ( Figs 32–33 View FIGURES 25–35 ) with apodeme (basal portion anterad of connective articulation) long, one-third of style total length; apical third widened with preapical lobe elongate and robust bearing a digitiform process; apex with some microsetae; in lateral view, subcylindrical and sinuous. Aedeagus ( Figs 34–35 View FIGURES 25–35 ) dorsal apodeme membranous; shaft tubular and sinuous, wider near base, strongly curved at basal half; apex slightly wider than shaft and curved ventrally, with numerous spiniform processes. Anal tube with segment X ( Fig. 30 View FIGURES 25–35 ) conical; length three-fifths of pygofer dorsal margin length.

Female terminalia. Sternite VII ( Fig. 36 View FIGURES 36–42 ), in ventral view, approximately rectangular; posterior margin with prominent rounded median lobe. Sternite VIII membranous. Pygofer ( Fig. 37 View FIGURES 36–42 ), in lateral view, higher than long, subtriangular;ventral margin almost twice longer than dorsal margin; dorsal margin with posterior portion convex; with long macrosetae concentrated at posterior half; without microsetae; apex acute. First valvifer ( Fig. 38 View FIGURES 36–42 ) subtriangular. First valvula ( Fig. 38 View FIGURES 36–42 ), in lateral view, expanded apically; ventral interlocking device located at basal third of blade; dorsal sculptured area on apical half, with sculpturing strigate ( Fig. 39 View FIGURES 36–42 ); apex acute. Second valvifer ( Fig. 40 View FIGURES 36–42 ) two times longer than high. Second valvula ( Fig. 40 View FIGURES 36–42 ), in lateral view, with apical two-thirds expanded, narrowing to apex; dorsal margin with 26 separate subtriangular teeth without denticles (single specimen dissected); duct area with maculose sculpturing; ventral margin without preapical prominence or denticles ( Fig. 41 View FIGURES 36–42 ); apex acute. Third valvula ( Fig. 42 View FIGURES 36–42 ) with basal half distinctly narrower than apical half; microsetae distributed on ventral margin and dorsal margin near apex; with 3-4 apical macrosetae; apex acute.

Remarks. Portanus chihiro sp. nov. is very similar to Portanus hasemani (Baker, 1923) , both species sharing: (1) similar color pattern; (2) male pygofer subquadrate; (3) aedeagus strongly curved at basal half; and (4) with spiniform processes at apex. However, the new species can be distinguished from the latter and other Portanus species by the following features: (1) male pygofer without process or spine; (2) with posterior margin truncated; and (3) aedeagus apex with numerous processes directed ventrally (in P. hasemani , the aedeagus apex has three uniseriate processes).

Etymology. The species epithet is named after the character Chihiro from the animated movie Spirited Away by Studio Ghibli. The species epithet is treated as a noun in apposition.

Material studied. Holotype. Male , “ BRASIL, Pará [State], Serra do \ Cachimbo, \ 9°05’40.9”S 54°47’55”W, 570 m, \ 01-03.vii.2017, Malaise, \ G. Melo & D. Muniz ”, “DNA Voucher: \ Entomologia, DZRJ \ ENT4756 ” ( DZUP) GoogleMaps . Paratypes. 3 males and 1 female, same data as holotype ( DZUP) GoogleMaps ; 2 males and 1 female, same data as holotype ( DZRJ) GoogleMaps .