A review of the stink bug genus Plautia Stål from Japan (Hemiptera, Heteroptera, Pentatomidae) Author Ishikawa, Tadashi Author Moriya, Seiichi text Zootaxa 2019 2019-03-06 4564 2 470 490 journal article 28414 10.11646/zootaxa.4564.2.8 11c87853-9767-4d85-bbfd-1d2116aa3ea5 1175-5326 2589359 171E7B4D-773A-4A16-8C0F-3D23F6947A Plautia splendens Distant, 1900 ( Figs. 3 , 8–11 , 16 , 25 , 30 , 35 , 40 , 45 , 50 , 55 , 60 , 65 , 70 , 75 , 82 ) Plautia splendens Distant, 1900 : 171 (new species). Lectotype (Zheng in Liu & Zheng 1994 : 243 , 247): ♀ , Japan ; BMNH. Plautia cyanoviridis Ruckes, 1963 : 353 (new species). Holotype : ♂ , Chichi Jima, Bonin Is. [Ogasawara Islands, Japan ]; SNMNH. New subjective synonym . Diagnosis. Among the species of Plautia , this pentatomid is recognized by the following combination of characters: body 8.0–10.0 mm long and generally dark blue green ( Fig. 3 ); antennae lacking blackish area ( Fig. 3 ); punctures on disc of pronotum and scutellum blackish and strong, almost same in size as punctures on coria of fore wings ( Fig. 16 ); lateral margins of pronotum pale without dark line ( Fig. 25 ); ventral rim of genital capsule Vshaped ( Figs. 30 , 35 ); crown of paramere drop-shaped ( Fig. 45 ); lateral lobe of crown strongly extended laterad, with widely round distal angle and acutely angulated proximal angle ( Fig. 45 ); conjunctival processes of endosoma long, tapering ( Figs. 50 , 55 , 60 , 65 ); processes of vesica roughly Y-shaped in ventral view, oblong in outline in posterior view ( Figs. 55 , 65 ); valvifer VIII with oval oblique brownish spot apically ( Fig. 70 ); horn-shaped process of apical receptacle of spermatheca short, produced dorsad of apical receptacle, strongly curved ( Fig. 82 ); sclerotized zone of intermediate part of spermatheca approximately half as long as intermediate part ( Fig. 82 ). Redescription of genitalia. Male . Genital capsule ( Figs. 35 , 40 ) approximately 2.8 times as wide at maximum as its basal width, approximately 7/10 as long as its maximum width, triangularly produced at posterior angles; ventral rim ( Figs. 30 , 35 ) V-shaped; concavity of ventral rim approximately 1/5 as deep as its maximum width ( Fig. 35 ); transverse ridge well developed, invisible in ventral view, with roundly concave dorsal margin in posterior view ( Fig. 40 ); dorsal sclerites elliptic, roundly extended outward, with small projection at ventral angle ( Fig. 40 ); dorsal sinus almost circular in posterior view ( Fig. 40 ); paramere sockets semicircular in posterior view ( Fig. 40 ). Crown of paramere ( Fig. 45 ) drop-shaped, covered with short setae for most part, round at apex; lateral lobe large, strongly extended laterad, with widely round distal angle and acutely angulated proximal angle; distal margin slightly concave; proximal margin weakly sinuate. Conjunctival processes of endosoma ( Figs. 50 , 55 , 60 , 65 ) simple, long, weakly arched, directed distad, tapering, blunt at apex. Vesica short, straight in lateral view, directed dorsoposteriad ( Fig. 60 ). Processes of vesica relatively large, roughly Y-shaped in ventral view ( Fig. 55 ), elliptic in lateral view ( Fig. 60 ), oblong in outline in posterior view ( Fig. 65 ). Female . Valvifer VIII roughly pentagonal, generally dark blue green, often with oval oblique brownish spot apically ( Fig. 70 ), covered with short to long setae on disc and along posterior and mesal margins ( Fig. 75 ); apical angle a little more obtuse than right angle ( Fig. 75 ). Spermatheca long; apical receptacle ( Fig. 82 ) spherical, with 1 horn-shaped process; horn-shaped process short, produced dorsad of apical receptacle, strongly curved; intermediate part ( Fig. 82 ) a little widened at apical part, gradually narrowed basad, approximately 3.5 times as long as its width at middle, with sclerotized zone apically; apical sclerotized zone of intermediate part approximately half as long as intermediate part ( Fig. 82 ); distal flange 1.5 times as wide as proximal flange ( Fig. 82 ). Type material examined. Lectotype of Plautia splendens Distant, 1900 , ♀ ( Fig. 8 ): “ Japan .”, “ splendens Dist. ”, “ Type ”, “SIN-TYPE”, “ LECTOTYPE Plautia splendens Distant L. y. Zheng design. 1993”, deposited in BMNH . Holotype of Plautia cyanoviridis Ruckes, 1963 , ♂ ( Fig. 10 ): “BONIN IS.: CHICHI JIMA, Miyanohara ‘Jack Wm’s beach V-12 - - VI-9-1958 ”, “ F.M. Snyder Collector ”, “ Plautia cyanoviridis H. Ruckes HOLOTYPE ”, deposited in SNMNH . Other material examined. In addition to the type specimens, 50 specimens (ELKU, NIAES, NSMT, OMNH, TUA) were examined from the following localities: JAPAN : the Ogasawara Islands (Muko-jima Is., Ani-jima Is., Chichi-jima Is., Minami-jima Is., and Haha-jima Is.). This species is endemic to the Ogasawara Islands. Distribution. The Ogasawara Islands (Muko-jima Is., Ani-jima Is., Chichi-jima Is., Minami-jima Is., and Haha-jima Is.). Remarks. Detailed examination of type specimens of Plautia splendens ( lectotype ) and P . cyanoviridis ( holotype ) revealed that these two species are conspecific without any doubt. The scientific name P . splendens has been used for another species (which is described as a new species, P . himechabane , detailed below) inhabiting the mainland of Japan , the Ryukyu Islands, and China (see below for details). Closer attention is thus necessary when interpreting prior studies using the scientific name P . splendens .