Orientomiris chiangmai, Yasunaga, 2024

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 : 407-410

Orientomiris chiangmai sp. nov.

( Figs 6K–M , 7A–B , 8B, D , 12E , 17G–L , 18J–O )

Type material. HOLOTYPE: J, THAILAND: Chiang Mai, Baan Khun Chiang Khian, Chiang Mai Univ. Exp. Forest , 18°50′N 98°54′E, UV lighting, 15–16.xi.1989, T.Yasunaga ( DOAT) ( AMNH _PBI AMNH _ PBI 00378803 ) . PARATYPES: THAILAND: Chiang Mai, same data as for holotype, 2 JJ ( TYCN); same locality, sweeping flowers of broadleaf trees, 16–17.xi.1989, T. Yasunaga, 1 J 3 ♀♀ ( TYCN, ZRC); Chiang Mai, Doi Pui, 18°48′N 98°55′E, 18.xi.1989, T. Yasunaga, 1 ♀ ( TYCN).

Diagnosis. This new species is most closely related to the preceding O. andrzeji sp. nov., from which O. chiangmai sp. nov. can be distinguished by its paler general coloration; pale brown head with a pair of brown stripes; wider vertex in female; reddish brown labium; almost uniformly pale brown or brown hemelytron; pale base of metatibia; different pattern of sclerites on vesica (cf. Figs 6J, M ); and interramal lobe with sparser and shorter spinules restricted to distal half ( Fig. 18O ).

Description. Body pale brown to brown, parallel-sided, moderate in size; dorsal surface weakly shining, with uniformly distributed, pale, simple, semierect setae ( Figs 7A , 17G ). Head pale brown, weakly shining, with pair of brown stripes ( Fig. 7A ); vertex 0.29–0.33 (J) / 0.35–0.38 (♀) times as wide as head across eyes. Antenna pale brown; segment I ventrally with grayish brown stripe connecting to apical brown ring; apical 1/6–1/7 of segment II darkened; segment III brown, with two faint yellow annulations at base and apical 1/3; segment IV brown, with pale basal 1/3. Labium pale reddish brown, slightly exceeding apex of metacoxa. Pronotum usually uniformly pale brown to brown, slightly darkened along posterior margin, with pale brown collar and posterior margin; pleura uniformly pale brown; metathoracic scent efferent system as in Fig. 17H ; mesoscutum and scutellum pale brown; mesoscutum narrowly darkened medially; scutellum with small triangular fuscous macula at base and dark apex. Hemelytron brown to castaneous brown; exocorium slightly paler, with exocorial serration as in Fig. 17I ; cuneus uniformly reddish brown; membrane pale smoky brown, with fuscous veins. Coxae and legs pale brown; metafemur with two obscure fasciae subapically; metafemoral plectra as in Figs 12E , 17J ; tibial spines pale brown; pretarsal structures as in Figs 17K–L . Abdomen pale brown. Male genitalia ( Figs 6K–M , 8B, D , 18J–L ): pygophore with stout process at base of left paramere ( Fig. 8B ); left paramere semi-circularly curved, constricted at base of hypophysis ( Figs 6L , 18J ); vesical lobal sclerites as in Figs 6M , 8D , with elongate, apically hooked sclerite that is accompanied by short hair-like processes ( Fig. 6M ). Female genitalia ( Figs 18M–O ): interramal lobe weakly projected at inner margin, with sparsely distributed spinules on distal half area ( Figs 18N–O ); dorsal structure sparsely with short spinules ( Fig. 18O ).

Measurements. See Table 1.

Etymology. Named after the type locality, Chiang Mai District in northern Thailand; a noun in apposition.

Biology. Unknown. Several specimens including teneral adults were found on inflorescence of undetermined broadleaf trees.

Distribution. North Thailand (Chiang Mai).

Figures

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.

Fig. 7. Habitus images of Orientomiris chiangmai sp. nov. (A–B), O. andrzeji sp. nov. (C), O. norioi sp. nov. (D–F) and O. shoheii sp. nov. (G–H). A, D, F, G – male, dorsal view. B, H – male, left lateral view. C – female, left lateral view. E – male, ventral view.

Fig. 8. Male genitalia of Orientomiris andrzeji sp. nov. (A, C), O. chiangmai sp. nov. (B, D), O. norioi sp. nov. (E) and O. shoheii sp. nov. (F). A–B – genital segment (pygophore) in dorsal view. C–F – vesica. Scale bars 0.2 mm.

Fig. 12. Scanning electron micrographs of metafemoral plectra (all at 1000×). A – Pseudomegacoelum beckeri (Fieber, 1870). B – Megacoelum infusum (Herrich-Schaeffer, 1837). C – Muttiocapsus cruciger sp. nov. D – M.teradai sp. nov. E – Orientomiris chiangmai sp. nov.F – O. andrzeji sp. nov. G – O. norioi sp. nov. H – O. shoheii sp. nov. I – O. eurytus (Yasunaga, 1988). J – O. tricolor (Scott, 1880). K – O. flavicollaris Yasunaga, 1997. L – O. nigripes Yasunaga, 1997. M – O. yaeyamanus Yasunaga, 1997. N – O. straminipes (Distant, 1909). O – O. sp. 1. P – Sakaeratiella adelphocoroides (Yasunaga, Shishido & Yamada, 2017). Q – Creontiades bipunctatus Poppius, 1915. R – Cheilocapsidea rufescens (Yasunaga, 1995). S – Neomegacoelum vitreum (Kerzhner, 1988). T – Vairocanamiris jordiribesi Yasunaga, 2011.

Fig. 17. Scanning electron micrographs for males of Orientomiris andrzeji sp. nov. (A–F), O. chiangmai sp. nov. (G–L) and O. norioi sp. nov. (M–O). A – anterior body, dorsal view. B, M – same, left lateral view. C, H, N – thoracic pleura, left lateral view. D, I – forewing notches. E, K – metatarsus. F, L, O – pretarsal structure of hind leg. G – anterior body, left dorso-lateral view. J – metafemur, dorsal surface.

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.