Orius (Orius) inthanonus Yamada and Yasunaga

Yamada, Kazutaka, Yasunaga, Tomohide & Artchawakom, Taksin, 2015, The flower bug genus Orius Wolff, 1811 (Hemiptera: Heteroptera: Anthocoridae: Oriini) of Thailand, Journal of Natural History 50, pp. 1103-1157 : 1131-1133

publication ID	https://doi.org/ 10.1080/00222933.2015.1104393
DOI	https://doi.org/10.5281/zenodo.4332769
persistent identifier	https://treatment.plazi.org/id/EA370637-2044-0D3E-4140-3239FEC8FCDD
treatment provided by	Carolina
scientific name	Orius (Orius) inthanonus Yamada and Yasunaga
status	sp. nov.

Treatment

Orius (Orius) inthanonus Yamada and Yasunaga , sp. nov. ( Figures 3I,J View Figure 3 , 5K View Figure 5 , 6F View Figure 6 , 9F View Figure 9 , 12C View Figure 12 , 16D – F View Figure 16 )

Type material

Holotype. ♂ (NSMT-I-He 74287; Figures 3I, J View Figure 3 , 5K View Figure 5 , 6F View Figure 6 , 9F View Figure 9 , 12C View Figure 12 , 16D – F View Figure 16 ), ( THAILAND), Maeo Khun Klang , 1300 m, Doi Inthanon, 20 October 1983, M. Sakai ( NSMT). Right antenna, left antennal segments III and IV, pronotal corner setae excepting left posterolateral one, and long, erect setae between each eye and ocellus are missing.

Diagnosis

Recognised by the following characters: body generally blackish brown ( Figure 3I, J View Figure 3 ); hemelytra brown to greyish brown, embolium posteriorly darkened, cuneus darker ( Figure 3I View Figure 3 ); legs yellowish brown, meso- and metafemora dark brown ( Figure 3J View Figure 3 ); male profemora with six fuscous small teeth on ventral side; cone thin, acute apicad, elevated dorsally with a projection ( Figure 16D – F View Figure 16 ); denticule lacking; flagellum robust, roundly curved, noticeably expanded from base to middle in lateral view ( Figure 16D – F View Figure 16 ).

Description

Male (holotype). Colouration: body generally blackish brown ( Figure 3I, J View Figure 3 ). Head brown to blackish brown, with paler apex ( Figure 5K View Figure 5 ); eyes reddish brown, ocellus and its surrounding area red to reddish brown. Antennal segments I and II yellowish brown ( Figure 5K View Figure 5 ). Labium uniformly pale yellow, but segments I and II with fuscous tinge ( Figure 3J View Figure 3 ). Pronotum and scutellum uniformly blackish brown ( Figure 5K View Figure 5 ). Hemelytra brown to greyish brown; embolium posteriorly darkened; cuneus darker than remainder area of corium; membrane uniformly somber dark brown ( Figure 3I View Figure 3 ). Legs pale yellow to yellowish brown; meso- and metafemora dark brown ( Figure 3J View Figure 3 ). Venter of thorax and abdomen dark brown, tinged with darker orange brown ( Figure 3J View Figure 3 ). Structure: body elongate oval ( Figure 3I View Figure 3 ). Head smooth, shiny, about 0.66 times as long as width across eyes, and with a longer erect seta on each side of clypeus, and near anteromedial margin of each eye; ante-ocular portion 0.64 times as long as length of eye in dorsal view; vertex about 1.8 times as wide as eye in dorsal view; eye 1.4 times as long as eye width in dorsal view; postocular portion constricted; neck distinct ( Figure 9F View Figure 9 ). Antennal segment I stout, much exceeding apex of head, sparsely covered with short suberect setae; segment II 0.63 times as long as head width across eyes, densely covered with suberect setae which are shorter than width of the segment ( Figures 5K View Figure 5 , 9F View Figure 9 ). Labium sparsely covered with short suberect setae. Pronotum shiny, smooth, sparsely covered with short decumbent setae and tiny punctures; anterior margin slightly concave, width about as wide as mesal length; lateral margin moderately curved; lateral carinae distinctly expanded; posterior margin concave, width 2.5 times as wide as anterior pronotal width; collar distinct, strigose, demarcated by shallow transverse impression from callus; callus strongly convex, with scattered short setae, demarcated posteriorly by deep sinuate transverse impression ( Figures 5K View Figure 5 , 9F View Figure 9 ). Scutellum nearly equilateral, shorter than basal width, deeply depressed through middle, sparsely covered with short decumbent setae and tiny punctures. Hemelytra overall sparsely covered with short decumbent setae and tiny punctures; maximum width of endocorium twice as wide as embolium; cuneal margin 0.5 times as long as embolial margin; membrane with one indistinct vein located near costal margin. Ostiolar peritreme similar in general shape to O. fi liferus and O. machaerus ; anterior area to median furrow in ostiolar peritreme smooth, about as wide as maximum width of posterior area to median furrow; posterior area squamous entirely; supracoxal area transversely rugose ( Figure 6F View Figure 6 ). Legs densely covered with stramineous decumbent setae; male protrochanters bearing one fuscous small tooth on ventral side; male profemora with six fuscous small teeth on ventral side; male protibiae with a row of 16 fuscous small teeth on ventral side. Male genitalia ( Figures 12C View Figure 12 , 16D – F View Figure 16 ): pygophore ovoid shaped, posteroventrally covered with four long, stout setae which are shorter than length of pygophore ( Figure 12C View Figure 12 ); mediodorsal surface densely distributed with short, suberect setae; cone thin, acute apicad in dorsal view, elevated dorsally with a projection ( Figure 16D – F View Figure 16 ); denticule lacking; flagellum robust, roundly curved, longer than twice of maximum width of cone, basally thickened in dorsal view, noticeably expanded from base to middle in lateral view, extending well beyond the left edge of pygophore ( Figure 16D – F View Figure 16 ).

Female. Unknown.

Measurements (mm)

[♂ (n = 1)]. Body length 2.05; head length (excluding neck) 0.25; head width across eyes 0.38; vertex width 0.18; width between ocelli 0.15; lengths of antennal segments I – II: I – 0.09, II – 0.24, III – missing, IV – missing; lengths of labial segments II – IV: II – 0.09, III – 0.25, IV – 0.22; anterior pronotal width 0.30; mesal pronotal length 0.30; basal pronotal width 0.76; length of embolial margin 0.68; length of cuneal margin 0.35; maximum width across hemelytra 0.84.

Etymology

Named after the type locality, Doi Inthanon in Chom Thong District , Chiang Mai Province, northern Thailand; a noun in apposition .

Distribution

Northern Thailand (Chiang Mai).

Remarks

Orius inthanonus is distinctive among the species of the subgenus Orius in having brown to greyish brown hemelytra with posteriorly darkened embolium and darker cuneus and the male profemora with six fuscous small teeth on ventral side. The structure of male genitalia of O. inthanonus somewhat resembles that of O. machaerus ; however, it differs from the latter by the roundly curved flagellum being noticeably expanded from base to middle in lateral view.

Habitat

Unknown.