Proutista dolabratus Chen & Zhang, 2025

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

( Figures 6–7 View FIGURE 6 View FIGURE 7 )

Measurement. Body length: male (N=1) (incl. tegmen): 7.6 mm (except tegmen: 3.2 mm), female (N=3) (incl. tegmen): 7.5–7.8 mm (except tegmen: 2.8–3.1 mm); length of tegmen: male (N=1): 6.9 mm, female (N=3): 6.8–7.1 mm.

Coloration. Body dark brown to black. Vertex with lateral marginal carinae yellow and disc yellowish ( Fig. 6A View FIGURE 6 ). Frons yellowish, with lateral marginal carinae yellowish, in lateral view, genae white, each tinged black at part adjacent to clypeus, with a small black spot in front of anterior apical angle of eyes ( Figs 6B, C View FIGURE 6 ). Clypeus dark brown, with a longitudinal median carina black except for base yellow, and two lateral ones black ( Fig. 6B View FIGURE 6 ). Rostrum black ( Fig. 6C View FIGURE 6 ). Eyes dark gray; ocelli white. Antennae yellowish ( Figs 6A–C View FIGURE 6 ). Pronotum black, yellow at middle, with some irregular yellow spots on each lateral part, margins yellow ( Fig. 6C View FIGURE 6 ). Mesonotum brown, with disc dark brown in posterior half part between lateral carinae, longitudinal median and lateral carinae yellowish, scutellum with posterior margin yellowish ( Fig. 6A View FIGURE 6 ). Tegula dark brown ( Figs 6A–C View FIGURE 6 ). Tegmina generally dark brown and semitransparent, with almost every apical cell with a transparent spot or spots, with a large transparent region almost over clavus from basal to central portion adjacent to posterior margin, elongate basally and extremely expanded apically, forming shape of an axe; veins brown on basal half and orange to red on apical half ( Fig. 6F View FIGURE 6 ). Wings generally brown and semitransparent, with elongate lighter stripes adjacent to posterior margin; veins dark brown ( Fig. 6E View FIGURE 6 ). Legs white to yellowish, with a black marking on each coxa of fore and middle legs ( Figs 6B–D View FIGURE 6 ). Abdomen black, with median carina yellow, and several rows of small yellow spots on tergites ( Figs 6A–C View FIGURE 6 ). Anal tube of male orange; gonostyli and phallic complex brown to dark brown ( Figs 6A–C View FIGURE 6 ). Female genitalia yellow and black ( Figs 12E, F View FIGURE 12 ).

Structure. Head and thorax. Frons with lateral marginal carinae contiguous in upper half and very slightly separated in lower half ( Fig. 6B View FIGURE 6 ). Rostrum with apical segment expanded to apex, beyond coxae of hind legs ( Figs 6B, C View FIGURE 6 ). Antennae with pedicelli about twice as long as widest part and shorter than frons, subcylindrical, slightly expanded distad, and slightly concave at apex ( Figs 6A–C View FIGURE 6 ). Mesonotum about eight times longer than pronotum in midline, disc raised apparently, and posterior part flat, with three distinct longitudinal carinae, median carina straight and two lateral ones curved towards median carina at their middle ( Figs 6A, C View FIGURE 6 ). Tegmina narrow and elongate, about 3.1 times longer than widest part, narrowest basally and widest centrally, then slightly constricted distad, posterior margin arched, jugal margin protruded, apical margin slightly truncated; RA 2 with two branches curved anterad; MP 3+4 forked at same level as MP 1 forking, and MP 3 smooth throughout, C3b short and triangular, MP 1 aaa forked; CuA forked before 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 ( Fig. 6F View FIGURE 6 ). Metatibiotarsal formulae: 4-5-6 ( Fig. 6D View FIGURE 6 ).

Male genitalia. Anal tube narrow and long, and slightly grooved, shorter than gonostylus, in dorsal view, subtrapezoidal, slightly constricted distad, emarginate at apex, with anal stylus at middle, epiproct wide and subtrapezoidal, paraprocts long and oval ( Fig. 7B View FIGURE 7 ); in lateral view, widest and convex dorsad in basal third, pointed and curved ventrad at apex, with dorsolateral margin slightly elevated from basal third to subapical part, ventral margin slightly convex ventrad at basal third and roundly concave near apex ( Fig. 7A View FIGURE 7 ); in caudal view, sharply triangular at apex ( Fig. 7E View FIGURE 7 ). Pygofer narrow, in lateral view, widest ventrally, anterior margin concave at dorsal sixth, posterior margin roundly concave in ventral quarter, laterodorsal angles roundly protruded ( Fig. 7A View FIGURE 7 ); in ventral view, venter wide rectangular, posterior margin relatively straight, without medioventral process ( Fig. 7C View FIGURE 7 ). Gonostyli narrow and long, asymmetric, left gonostylus slightly longer than right one, in dorsal view, slightly incurved, with inner margin hirsutiusculus ( Figs 7B, D View FIGURE 7 ); in lateral view, wide at base and narrow in other parts, upcurved and blunt acute 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 ventrocephalad at subapical part of it, and a conical process protruded dorsocaudad on inner caudal side of it but curved dorsocephalad in shape of a small hook at apex ( Figs 7A, F View FIGURE 7 ). Phallic complex moderately short and stout, in dorsal view, periandrium fusiform, narrow at base, expanded to middle, and then constricted distad into an angular process (P 1), blunt acute and slightly curved rightwards at apex ( Fig. 7H View FIGURE 7 ); in lateral view, periandrium with basal half relatively wide and apical half constricted, P 1 sword-like and protruded caudad at apex, and ventral basal angle small and blunt, protruded cephalad ( Figs 7G, I View FIGURE 7 ); with other three processes (except for P 1) at apex, from venter to dorsum: a small and acicular process (P 2) on left and dorsal side of P 1, directed caudad; a moderately long process (P 3) on rightmost, gradually tapered distad and directed dorsocaudad; a large and elongate process (P 4) at middle, wide basally and gradually tapered distad, directed dorsocephalad and curved rightwards near apex; endosoma relatively large in profile, with bimodal shape at base and lobe-like shape along P 4 at apex ( Figs 7G–I View FIGURE 7 ).

Female genitalia. Pygofer with laterodorsal tergal processes and ventrosternal processes strongly protruded and finger-like; sternal plate with impaired medioventral plate, somewhat protruded dorsad and W-shaped, slightly roundly protruded at middle and reniform in lateral parts. Gonocoxa IX developed and C-shaped, dorsolateral angle convex. Gonoplac laminated, in caudal view, round and broadest at base, then constricted distad, and truncated at apex, slightly protruding in inner margin of apex ( Figs 2A View FIGURE 2 , 12E, F View FIGURE 12 ).

Type material. Holotype: ♂ ( NWAFU), Nangun River , Lincang County, Yunnan Province, China, E 99.2252°, N 23.2618°, 700 m, 28 Sept 2024, coll. Li Rongrong. GoogleMaps Paratypes: 3♀ ( NWAFU), same data as holotype GoogleMaps .

Etymology. The specific epithet refers to the transparent region in the shape of an axe on the tegmina.

Remarks. This species closely resembles Proutista monychus Fennah, 1978 , but can be separated from it by the following features: tegmina with a transparent spot at apex between RP 2 a and MP 1 aaa, gonostylus with a process on caudal side of internal auricular process produced dorsad and followed by internal process; whereas in P. monychus , tegmina without a transparent spot at apex between RP 2 a and MP 1 aaa, gonostylus with a process on caudal side of internal auricular process produced horizontally caudad.