Plautia splendens Distant 1900
Creators: name: Ishikawa, Tadashi
name: Moriya, Seiichi
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Plautia
Plautia splendens

description: 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.
description: Published as part of Ishikawa, Tadashi & Moriya, Seiichi, 2019, A review of the stink bug genus Plautia Stål from Japan (Hemiptera, Heteroptera, Pentatomidae), pp. 470-490 in Zootaxa 4564 (2) on pages 478-479, DOI: 10.11646/zootaxa.4564.2.8, http://zenodo.org/record/2589359