Orientomiris Yasunaga, 1997

Yasunaga, Tomohide, 2024, Reassessment of characters of the ‘ Orientomiris-group’, with descriptions of three new genera and eight new species of the tribe Mirini from the Oriental Region (Hemiptera: Heteroptera: Miridae), Acta Entomologica Musei Nationalis Pragae 64 (2), pp. 397-426 : 406

Orientomiris Yasunaga, 1997

Orientomiris Yasunaga, 1997b: 728–729 (new genus). Type species by original designation: Calocoris tricolor Scott, 1880 , from Nagasaki, Japan ( Fig. 11C )

Orientomiris : YASUNAGA (2001): 250 (diagnosis); ZHENG et al. (2004): 210 (diagnosis); CH ḖROT & MALIPATIL (2016): 173 (diagnosis, new combinations); YASUNAGA et al. (2021): 153 (new combinations); YASUNAGA (2023): 80 (diagnosis).

Diagnosis. Recognized primarily by the following combination of characters: body elongate, parallel-sided, usually more than 8 mm in total length; stridulatory devices always present (serration on forewing edge and metafemoral plectra, cf. Figs 10A–E ); basic coloration brown to fuscous (e.g., Figs 3E–F , 11C–D ); dorsal surface weakly shining, impunctate, partly or widely covered with reticular microstructures, with sparsely or uniformly distributed, pale, simple setae; head rather vertical, weakly porrect; vertex with a longitudinal mesal sulcus; antenna long, usually longer than body, almost linear; legs long; male genital segment (pygophore) with a conical process at base of each paramere (e.g., Figs 9A–B , 18A , 19F, J ); vesica with semi-circular (sometimes triangular) secondary gonopore ( Fig. 18E ) and several variable lobal sclerites, lacking stout or elongate spicule ( Figs 6J, M , 18D, K ); elongate-ovoid sclerotized rings contiguous to each other mesally ( Figs 18F, M ); and posterior wall with relatively wide interramal lobes and rounded dorsal structure ( Figs 18G, N ). Further diagnostic characters or descriptions (including male and female genitalic structures) for the genus were provided by YASUNAGA (1997, 2023), ZHENG et al. (2004) and CH ḖROT & MALIPATIL (2016). Because of the great similarity in external appearance, unequivocal species identifications of Orientomiris species, particularly from the Oriental Region, are difficult ( CH ḖROT & MALI- PATIL 2016). Herein four new species which are evidently separable from the already known taxa are described below.

Biology. The majority of Orientomiris species are considered to be arboreal, usually propagating on broadleaf host plants ( YASUNAGA 2001). Some members are considered to be predators ( YASUNAGA 2001) and can be reared with a synthetic diet (fermented milk beverage and blood-worm) (MIYAZAKI et al. 2019).

Distribution. Eastern Palearctic and Oriental Region; currently includes 38 species from China, India, Indonesia, Japan, Malaysia, Philippines, Taiwan and Thailand) ( ZHENG et al. 2004, CH ḖROT & MALIPATIL 2016, YASUNAGA et al. 2021, YASUNAGA 2023).

Figures

Fig. 11. Habitus images of various mirine plant bugs examined in this study. A – Creontiades bipunctatus Poppius, 1915, female. B – Neomegacoelum vitreum (Kerzhner, 1988), male (left) and female. C – Orientomiris tricolor (Scott, 1880), female. D – O. straminipes (Distant, 1909), female. E – Poppiocapsidea sp., undetermined female specimen from Singapore.F – Sakaeratiella adelphocoroides (Yasunaga, Shishido & Yamada, 2016), holotype male.

Fig. 10. Stridulatory devices of Orientomiris andrzeji sp. nov. (A–E), Creontiades rubrinervis (Stål, 1862) (F) and Cheilocapsidea pura (Yasunaga, 1995) (G). Abbreviations: FE = forewing (embolial) edge. MF = metafemur (dorsal surface).

Fig. 3. Habitus images of Oriental mirine plant bugs, live individuals. A – Nythomiris nagamasai sp. nov., male. B – same, final (5th) instar nymph. C – N. nepalicus sp. nov., female from Makawanpur. D – same, from Kathmandu. E–F – Orientomiris andrzeji sp. nov., female.

Fig. 9. Male genitalia of Orientomiris norioi sp. nov. (A–C) and O. shoheii sp. nov. (D–F). A, D – right paramere. B, E – left paramere. C, F – vesica. Scale bars 0.2 mm.

Fig. 18. Scanning electron micrographs for male and female genitalia of Orientomiris andrzeji sp. nov. (A–I) and O. chiangmai sp. nov. (J–O). A – male genital segment (pygophore). B – right paramere. C, J – left paramere. D, K–L – vesica. E – secondary gonopore. F, M – genital chamber. G–I, N–O – posterior wall.

Fig. 19. Scanning electron micrographs for Orientomiris shoheii sp. nov., holotype male (A–F), O. eurytus (Yasunaga, 1988), female (G–I), and genitalia of O. norioi sp. nov. (J–M) and Poppiocapsidea biseratensis (Distant, 1903) (N–O). A, G – anterior body, left lateral view. B, H – thoracic pleura, left lateral view. C – forewing notches. D, I – metafemur, dorsal surface. E – metatarsus. F – male genital segment (pygophore), left lateral view. J – same, dorsal view. K – left paramere. L – right paramere. M – vesica. N – genital chamber. O – posterior wall.

Fig. 6. Male genitalia of Muttiocapsus cruciger sp. nov.(A–C), Nythomiris nagamasai sp. nov. (D–E), N. nepalicus sp. nov.(F–G), Orientomiris andrzeji sp. nov. (H–J) and O. chiangmai sp. nov. (K–M). A, D, F, H, H – right paramere. B, I, L – left paramere. C, E, G, J, M – vesica.