Proutista striatus Chen & Zhang, 2025

Proutista striatus Chen & Zhang View in CoL sp. nov.

( Figures 10–11 View FIGURE 10 View FIGURE 11 )

Measurement. Body length: male (N=2) (incl. tegmen): 7.5–7.8 mm (except tegmen: 2.9–3.0 mm), female (N=6) (incl. tegmen): 8.3–8.8 mm (except tegmen: 3.0– 3.2 mm); length of tegmen: male (N=2): 6.8–7.0 mm, female (N=6): 7.5–8.0 mm.

Coloration. Body generally yellowish brown with black markings ( Fig. 10E View FIGURE 10 ). Vertex with lateral marginal carinae white and disc darker ( Fig. 10A View FIGURE 10 ). Frons white, with lateral marginal carinae white, in lateral view, genae white, each tinged black at part adjacent to clypeus, with a small black spot in front of ventral margin of eyes ( Figs 10B, C View FIGURE 10 ). Clypeus black, with two white spots on lateral parts beneath frontoclypeal suture, longitudinal median carina yellowish except for apex dark, and two lateral ones white ( Fig. 10B View FIGURE 10 ). Rostrum white except for two ends black ( Figs 10B, C View FIGURE 10 ). Eyes dark gray; ocelli white. Antennae gray white, with pedicelli tinged black in median ( Figs 10A–C View FIGURE 10 ). Pronotum yellowish, lateral part each with an elongate black stripe along anterior apical margin, and another smaller fusiform black stripe behind eyes ( Figs 10A–C View FIGURE 10 ). Mesonotum yellowish brown, disc dark brown, with an indistinct and inverted Y-shaped white stripe along median carina, extremely lateral parts dark brown, with longitudinal median and lateral carinae yellowish, scutellum with posterior margin yellowish ( Figs 10A, E View FIGURE 10 ). Tegula brownish yellow ( Figs 10A–C View FIGURE 10 ). Tegmina generally off-white and semitransparent, with many dark brown markings of varying sizes, with three clearly and relatively continuous transverse bands, first band at connection of Pcu and A 1 level not extending to posterior margin, second one at apex of clavus level, third one at first r-m level, irregular dark brown markings in apical quarter; veins yellowish brown or darker ( Fig. 10F View FIGURE 10 ). Wings generally off-white and semitransparent, with an unclear brown stripe at base, a transverse band at basal third, and brown markings in apical part; veins brownish to dark brown ( Fig. 10D View FIGURE 10 ). Legs white, coxae of fore and middle legs black, while those of hind legs brown, tarsi of fore legs brown, tibiae of hind legs tinged black at apex ( Figs 10B, C View FIGURE 10 ). Abdomen black, with median carina yellow, and several rows of small yellow spots on tergites. Anal tube of male and gonostyli white ( Fig. 10C View FIGURE 10 ), phallic complex brown. Female genitalia yellow, with black markings, and a longitudinal black band at middle of sternal plate ( Figs 13A, B View FIGURE 13 ).

Structure. Head and thorax. Frons with lateral marginal carinae very slightly separated throughout, with a longitudinal sulcus at middle ( Fig. 10B View FIGURE 10 ). Rostrum with apical segment expanded to apex, slightly beyond coxae of hind legs ( Figs 10B, C View FIGURE 10 ). Antennae with pedicelli about 2.2 times longer than widest part and shorter than frons, subcylindrical, slightly expanded distad ( Figs 10A–C View FIGURE 10 ). Mesonotum about eight times longer than pronotum in midline, disc raised apparently, and posterior part flat, with three distinct longitudinal carinae, all relatively straight ( Figs 10A, E View FIGURE 10 ). Tegmina narrow and elongate, about 3.3 times longer than widest part, narrowest basally and widest centrally, then slightly constricted distad, posterior margin arched, jugal margin protruded, apical margin round; RA with two branches, relatively straight; MP 3+4 forked about same level as ScP+RA and RP forking, and MP 3 smooth throughout, C3b short and triangular, MP 1 aaa forked; CuA forked after first m-cu, CuA 1 and CuA 2 fused near apex to form a common stem and then extending to posterior margin, C5 present and elongate ( Figs 10F View FIGURE 10 ). Metatibiotarsal formulae: 4-5-6 ( Fig. 10B View FIGURE 10 ).

Male genitalia. Anal tube narrow and long, and slightly grooved, with apical third strongly turned ventrad, turning point before apex of gonostylus, in dorsal view, subrectangular, slightly expanded centrally, with anal stylus at middle, epiproct wide and subtrapezoidal, paraprocts long and oval ( Fig. 11C View FIGURE 11 ); in lateral view, widest and convex dorsad in basal third, with dorsolateral margin slightly elevated from basal third to apex, ventral margin slightly arched ventrad at basal third ( Fig. 11A View FIGURE 11 ), in caudal view, triangular and slightly toward right, but curved leftward apically ( Fig. 11B View FIGURE 11 ). Pygofer narrow, in lateral view, widest ventrally, anterior margin convex at dorsal quarter, posterior margin straight, laterodorsal angles not protruded ( Fig. 11A View FIGURE 11 ); in ventral view, venter wide rectangular, with anterior and posterior margins relatively straight, without medioventral process. Gonostyli narrow and long, in dorsal view, widest at middle, constricted and incurved near apex, with inner margin hirsutiusculus ( Fig. 11D View FIGURE 11 ); in lateral view, wide near base and narrow in other part, round and upcurved apically; with a significant internal auricular process inside near dorsal base, densely covered long setae on surface, in addition, with a small hook-like process protruded outward at subapical part of it ( Fig. 11E View FIGURE 11 ). Phallic complex moderately short and stout, in dorsal view, periandrium arrow-shaped, with left margin slightly convex at apical third, right margin slightly convex near apex, constricted distad into a round process (P 1) at apex ( Fig. 11G View FIGURE 11 ); in lateral view, periandrium with basal half wide, apical half constricted and upcurved, P 1 round and protruded dorsocaudad, and ventral basal angle large and roundly protruded ( Figs 11F, H View FIGURE 11 ); with other three processes (except for P 1) at apex, from base to apex: a moderately long and acicular process (P 2) originated from convex part of left margin, almost parallel to P 1 in lateral view and directed dorsocaudad; a long and acicular process (P 3) on right side of subapical part, gradually tapered distad, directed dorsad and slightly curved; a large and elongate process (P 4) at middle originated from dorsum of P 1, wide at base, gradually tapered distad, and directed cephalad; endosoma relatively small in profile, slightly elevated at same level as base of P 2 ( Figs 11F–H View FIGURE 11 ).

Female genitalia. Pygofer with laterodorsal tergal processes absent; ventrosternal processes strongly protruded and lunate; sternal plate with impaired medioventral plate, strongly protruded dorsad and W-shaped, strongly incised basally, slightly acutely protruded at middle and foliar in lateral parts. Gonocoxa IX developed and dagger-shaped, dorsolateral angle convex. Gonoplac laminated, in caudal view, blunt acute and broadest at base, then constricted distad, and round at apex ( Figs 2B View FIGURE 2 , 13A, B View FIGURE 13 ).

Type material. Holotype: ♂ ( NWAFU), Wuzhi Mountain , Hainan Province, China, 750 m, 31 July 2009, coll. Wang Manqiang. Paratypes: 1♂ 6♀ ( NWAFU), same data as holotype .

Etymology. The specific epithet refers to the dark stripes of the tegmina.

Remarks. This species closely resembles Proutista javensis Muir, 1913 in features of anal tube of male and gonostylus, but can be separated from it by the tegmina with C1 and radial cell over dark brown, whereas in P. javensis , C1 and radial cell with transparent parts.