Orthonotus nakagawai, Yasunaga, 2022

Yasunaga, Tomohide, 2022, The plant bug subfamily Phylinae in Japan, with key to genera and descriptions of eight new species (Hemiptera: Heteroptera: Miridae), Zootaxa 5094 (1), pp. 1-52 : 19

publication ID

https://doi.org/ 10.11646/zootaxa.5094.1.1

publication LSID

lsid:zoobank.org:pub:72F6E1D9-E9E4-41F6-9AC0-97A249F94E68

DOI

https://doi.org/10.5281/zenodo.6301170

persistent identifier

https://treatment.plazi.org/id/AC7FEA3B-081F-FFFB-FF78-FDE5FC787059

treatment provided by

Plazi

scientific name

Orthonotus nakagawai
status

sp. nov.

Orthonotus nakagawai n. sp.

( Fig. 9 View FIGURE 9 A−C, H; 10D−G; 16; 23D−I; 24D−H, N; 25A−F)

Material examined. Holotype (♂). JAPAN: Akita Pref., Senboku City, Tazawako-Tamagawa, Play-Park Toze , 405 m, 39.8980, 140.6920, 27 Jun 2021, Y. Nakagawa ( AMNH) ( AMNH _ PBI 00380702 About AMNH ) GoogleMaps . Paratypes: JAPAN: Honshu , same data as for holotype, 3♂ ( TYCN) GoogleMaps ; same data except for date, 22 Jun 2021, 7♂ 5♀ ( NCA, TYCN) GoogleMaps ; Senboku City , Tazawako-Tamagawa, 410 m, 39.86, 140.70, 3 Jul 2021, UV lighting, 1♂ ( TYCN) . All specimens were collected by Y. Nakagawa.

Diagnosis. This new species can be readily distinguished from two other East Asian congeners by the characters mentioned in the above key. The final instar nymph is recognized by the ovoid body, reddish brown general coloration, sparse vestiture on dorsum, and white bases of antennal segments II and III ( Fig. 9C View FIGURE 9 ).

Description. Body elongate-oval in both sexes, weakly declivous at cuneal fracture ( Figs. 9A–B, H View FIGURE 9 ), not sexually dimorphic in coloration and external structures; basic coloration fuscous; dorsal surface weakly shining, with uniformly distributed, brown, simple setae and relatively sparser, silvery, reclining, lanceolate setae ( Fig. 23E View FIGURE 23 , 24N View FIGURE 24 ). Head fuscous; eye large. Antenna dark brown; segments I (except for apical reddish ring) and II (except for darkened extreme base and apical 1/3) yellowish brown; segment II more widely pale and not darkened basally in ♀ ( Fig. 9B View FIGURE 9 ); base of segment III creamy yellow. Labium yellowish brown, slender, its apex reaching but not exceeding apex of metacoxa; entire segment I, extreme base of II and apical half of segment IV dark reddish brown. Pronotum, mesoscutum and scutellum shiny fuscous, with sparsely distributed, silvery setae; pleura dark reddish brown; metathoracic scent efferent system dark grayish brown, with relatively small peritreme ( Fig. 23F View FIGURE 23 ). Hemelytron shiny dark brown, with almost uniformly distributed, silvery setae that are longer than those of two other E. Asian species ( Fig. 24N View FIGURE 24 ); membrane smoky brown. Coxae and legs generally pale reddish brown ( Fig. 9H View FIGURE 9 ); base of each femur narrowly darkened; all tibia entirely pale brown, without dark spots; tibial spines pale reddish brown; all tarsi yellowish brown; pretarsal structure as in Fig. 23I View FIGURE 23 ; pulvilli somewhat enlarged; parempodia hairlike. Abdomen shiny dark reddish brown. Male genitalia ( Figs. 10 View FIGURE 10 D−E; 24D−H): Ventral apical keel on pygophore developed ( Figs. 10D View FIGURE 10 , 24D View FIGURE 24 ); phallotheca long, almost straight ( Fig. 24E View FIGURE 24 ); vesica sigmoid, apically with subapical knob-like process and hooked apex ( Figs. 10E View FIGURE 10 , 24G–H View FIGURE 24 ). Female genitalia ( Figs. 10 View FIGURE 10 F−G; 25A−F): Sclerotized rings thick-rimmed, small, with ovoid inner margin and sharp lateral edge ( Figs. 10F View FIGURE 10 , 25E View FIGURE 25 ); posterior wall relatively narrow ( Fig. 25B–C View FIGURE 25 ).

Measurements: See Table 3 View TABLE 3 .

Etymology. Named for Mr. Y. Nakagawa (Akita, Japan), who collected the only known specimens designated as type-series and who shared some biological data.

Distribution. Japan (North Honshu: Akita).

Biology. Both adults and final instar nymphs were collected in late June 2021 by sweep-netting the various broadleaf trees, herbs, and ferns (Nakagawa, pers. comm.). Currently, the breeding host is yet to be confirmed. Collection records suggest this new species has a univoltine life cycle.

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Miridae

Tribe

Phylini

SubTribe

Phylina

Genus

Orthonotus

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