Plautia splendens Distant, 1900

Ishikawa, Tadashi & Moriya, Seiichi, 2019, A review of the stink bug genus Plautia Stål from Japan (Hemiptera, Heteroptera, Pentatomidae), Zootaxa 4564 (2), pp. 470-490 : 478-479

publication ID	https://doi.org/ 10.11646/zootaxa.4564.2.8
publication LSID	lsid:zoobank.org:pub:171E7B4D-773A-4A16-8C0F-3D23F6947A
DOI	https://doi.org/10.5281/zenodo.5922544
persistent identifier	https://treatment.plazi.org/id/03A687D8-FFD0-FFD9-E69C-966BFC91F90E
treatment provided by	Plazi
scientific name	Plautia splendens Distant, 1900
status

Treatment

( Figs. 3 View FIGURES 1–5 , 8–11 View FIGURES 6–11 , 16 View FIGURES 14–18 , 25 View FIGURES 19–27 , 30 View FIGURES 28–32 , 35 View FIGURES 33–37 , 40 View FIGURES 38–42 , 45 View FIGURES 43–47 , 50 View FIGURES 48–52 , 55 View FIGURES 53–57 , 60 View FIGURES 58–62 , 65 View FIGURES 63–67 , 70 View FIGURES 68–72 , 75 View FIGURES 73–77 , 82 View FIGURES 78–84 )

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 View FIGURES 1–5 ); antennae lacking blackish area ( Fig. 3 View FIGURES 1–5 ); punctures on disc of pronotum and scutellum blackish and strong, almost same in size as punctures on coria of fore wings ( Fig. 16 View FIGURES 14–18 ); lateral margins of pronotum pale without dark line ( Fig. 25 View FIGURES 19–27 ); ventral rim of genital capsule Vshaped ( Figs. 30 View FIGURES 28–32 , 35 View FIGURES 33–37 ); crown of paramere drop-shaped ( Fig. 45 View FIGURES 43–47 ); lateral lobe of crown strongly extended laterad, with widely round distal angle and acutely angulated proximal angle ( Fig. 45 View FIGURES 43–47 ); conjunctival processes of endosoma long, tapering ( Figs. 50 View FIGURES 48–52 , 55 View FIGURES 53–57 , 60 View FIGURES 58–62 , 65 View FIGURES 63–67 ); processes of vesica roughly Y-shaped in ventral view, oblong in outline in posterior view ( Figs. 55 View FIGURES 53–57 , 65 View FIGURES 63–67 ); valvifer VIII with oval oblique brownish spot apically ( Fig. 70 View FIGURES 68–72 ); horn-shaped process of apical receptacle of spermatheca short, produced dorsad of apical receptacle, strongly curved ( Fig. 82 View FIGURES 78–84 ); sclerotized zone of intermediate part of spermatheca approximately half as long as intermediate part ( Fig. 82 View FIGURES 78–84 ).

Redescription of genitalia. Male. Genital capsule ( Figs. 35 View FIGURES 33–37 , 40 View FIGURES 38–42 ) 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 View FIGURES 28–32 , 35 View FIGURES 33–37 ) V-shaped; concavity of ventral rim approximately 1/5 as deep as its maximum width ( Fig. 35 View FIGURES 33–37 ); transverse ridge well developed, invisible in ventral view, with roundly concave dorsal margin in posterior view ( Fig. 40 View FIGURES 38–42 ); dorsal sclerites elliptic, roundly extended outward, with small projection at ventral angle ( Fig. 40 View FIGURES 38–42 ); dorsal sinus almost circular in posterior view ( Fig. 40 View FIGURES 38–42 ); paramere sockets semicircular in posterior view ( Fig. 40 View FIGURES 38–42 ). Crown of paramere ( Fig. 45 View FIGURES 43–47 ) 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 View FIGURES 48–52 , 55 View FIGURES 53–57 , 60 View FIGURES 58–62 , 65 View FIGURES 63–67 ) simple, long, weakly arched, directed distad, tapering, blunt at apex. Vesica short, straight in lateral view, directed dorsoposteriad ( Fig. 60 View FIGURES 58–62 ). Processes of vesica relatively large, roughly Y-shaped in ventral view ( Fig. 55 View FIGURES 53–57 ), elliptic in lateral view ( Fig. 60 View FIGURES 58–62 ), oblong in outline in posterior view ( Fig. 65 View FIGURES 63–67 ).

Female. Valvifer VIII roughly pentagonal, generally dark blue green, often with oval oblique brownish spot apically ( Fig. 70 View FIGURES 68–72 ), covered with short to long setae on disc and along posterior and mesal margins ( Fig. 75 View FIGURES 73–77 ); apical angle a little more obtuse than right angle ( Fig. 75 View FIGURES 73–77 ). Spermatheca long; apical receptacle ( Fig. 82 View FIGURES 78–84 ) spherical, with 1 horn-shaped process; horn-shaped process short, produced dorsad of apical receptacle, strongly curved; intermediate part ( Fig. 82 View FIGURES 78–84 ) 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 View FIGURES 78–84 ); distal flange 1.5 times as wide as proximal flange ( Fig. 82 View FIGURES 78–84 ).

Type material examined. Lectotype of Plautia splendens Distant, 1900 , ♀ ( Fig. 8 View FIGURES 6–11 ): “ 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 View FIGURES 6–11 ): “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 .