Nipponocalisius tomokunii Heiss & Shimamoto & Nagashima 2024, sp. nov.
Creators: name: Heiss, Ernst
name: Shimamoto, Shusuke
name: Nagashima, Seidai
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Nipponocalisius
Nipponocalisius tomokunii

description: Nipponocalisius tomokunii sp. nov.
(Figs. 3–5, 12, 19–20, 27, 32, 33D–I)
Calisius sp.: Tomokuni (1984: 478 fig.4).
Calisius sp. 1: Nagashima & Shono (2012: 59 figs. 208a–c, 302), Ishikawa (2016: 454).
Nipponocalisius tomokunii: Heiss (2023: 111, 113 fig. 4, 115 fig.10). Unavailable name.
Type material. Holotype (♂): Japan, Ogasawara Isls. / Haha-Jima Is. / Mt. Kuwanoki / 10.Apr.2004 / Tadashi Ishikawa leg.// (TUA); paratypes: 5 ♂♂ 5 ♀♀ collected with holotype (CEHI, TUA); 1 ♂ 1 ♀: Japan, Ogasawara Isls. / Ototojima Is. / Ainosawa / 19 VI 1998 / Toshio Kishimoto leg. // (TUA); 1 ♂: Japan, Ogasawara Isls. / Ototo-jima Island / Ainosawa / 11 VII 2021 / Shusuke Shimamoto // (TUA); 1 ♀: Japan, Ogasawara / Ototo-jima Is. / Ichinotani / 9 VII 1997 / Toshio Kishimoto leg. // (TUA); 1 ♀: Japan, Ogasawara Isls. / Ototojima Is. / East of Kurohama / 8 IV 2004 / Tadashi Ishikawa leg. // (TUA); 2 ♂♂ 1 ♀: Japan, Ogasawara Isls. / Ani-jima Island / Mt. Token-zan / 6 VII 2021 / Shusuke Shimamoto // (TUA); 5 ♂♂ 6 ♀♀: Japan, Ogasawara Isls. / Ani-jima Island / Mt. Omaru-yama / 18-25 IV 2022 / Shusuke Shimamoto // (TUA); 13 ♂♂ 18 ♀♀: Japan, Ogasawara Isls. / Ani-jima Island / Mt. Omaru-yama / June-July 2022 / Anole Trap, JWRC leg. // (TUA, JWRC); 1 ♂ (Fig. 32b–c): Yoakeyama / Chichijima, Bonin / 30.V.1976 / T. Nakane lgt. // (NMNT); 1 ♀ (Fig. 32 b’–c’): Mikazukiyama / Chichijima, Bonin / 10.VI.1976 / T. Nakane lgt. // (NMNT); 1 ♂: Japan, Ogasawara Isls., / Chichi-jima Isl., Mt. Chuo-san, / 13 June 2023, / Yu HISASUE leg. // (TUA); 1 ♀: Hahajima Is. / Ogasawara / 12.VI.1988 / I. Matoba leg. // (TUA); 1 ♀: Japan, Ogasawara Isls. / Haha-jima Is. / Sekimon / 3 VIII 1996 / Toshinobu Matsumoto leg. // (TUA); 5 ♂♂ 12 ♀♀: Haha-jima Is., Japan / Tōkyo-to, Ogasawara-mura / Hahajima, Kuwanoki-yama / 26°39’40”N, 142°09’04”E / 5 III 2019 / Fumitaka Nakano // (TUA); 2 ♀♀: Japan, Ogasawara Isls. / Haha-jima Is. / Mt. Chibusa-yama / 6.VII.1997 / Toshio Kishimoto leg. // (TUA); 1 ♂: Japan, Ogasawara Isls. / Haha-jima Is. / Mt. Chibusa-yama / 17 VII 1991 / D. Nakamura // (TUA); 1 ♂: Japan, Ogasawara Isls. / Haha-jima Is. / Funaki-yama - Chibusa-yama / 15.VII.1991 / T. Ueno leg. // (TUA); 1 ♀: Okimura / Hahajima, Bonin / 7.VI.1976 / T. Nakane lgt. // (NMNT). All are provided with type labels.
Diagnosis. The macropterous morph possesses an unusually elongate head with dilated genae and a bilobate pronotum. distinguishing this species from congeners.
Description. Coloration stramineous, lateral parts of head, pronotum, basal and posterior part of scutellum and median one of three tubercles of lateral margins of deltg II–VII darker brown; disk of scutellum with a pale patch of inverted V-shape, reaching elevated base and anterior part of longitudinal ridge.
Head. Longer than wide (26:22); clypeus elongate, about twice as long as wide, genae dilated and lamellate anterolaterally, notched at apex; antennae short, 0.95 times as long as width of head; length of antennal segments I: II:III:IV = 4:4:5:8; vertex with a double row of tubercles and a row of larger tubercles along inner margins of eyes.
Pronotum. Anterior and posterior lobe not distinctly elevated; lateral margins bilobate, beset with three larger tubercles on anterior lobe and four on posterior lobe, posterior disk with four granulate carinae which are fused to a cluster on anterior lobe.
Scutellum. Long and slender, 1.6–1.7 times as long as wide, lateral margins with excision for exposed lateral margin of corium, reaching middle of deltg V, tuberculate at basal third, then carinate; median elevated ridge without distinct tubercles; surface of disk deeply punctured and with scarce, light colored tubercles at dark colored areas.
Abdomen. Lateral margins of deltg II–VII somewhat reflexed, each with a double row of three larger tubercles each, middle one brown; tergite VIII with exposed sclerite.
Genitalia. Paramere blade as in Fig. 27.
Female. Habitus and morphology as male, but of larger size.
Measurements. ♂ (n = 5): body length 2.60–2.90 mm, width of abdomen 1.00– 1.25 mm; ♀ (n = 5): body length 2.75–3.25 mm, width of abdomen 1.10–1.50 mm.
Etymology. This interesting new species is dedicated to our friend Masaaki Tomokuni, recognizing his valuable contributions to the taxonomy of Heteroptera.
Ecology. Several specimens were collected on Ardisia sieboldii Miqel (Primulaceae) covered with lichens (Nagashima & Shono 2012) (Fig. 33D–I). This new species is assumed to be frequent on the surface of the living trees because many specimens were collected from sticky traps set on branches to exterminate the invasive alien green anole (Anolis carolinensis Voight, 1832, Dactyloidae).
Distribution. Recorded from Ototo-jima,Ani-jima, Chichi-jima, and Haha-jima, small islands of the Ogasawara group (formerly Bonin Islands) about 1000 km SE of Tokyo in the Pacific and is supposed to be endemic to this oceanic island group (Fig. 34).
Remarks. As the way of colonization of the Pacific Islands, like the Ogasawara group, is unknown, the Calisiinae fauna of the Pacific Islands (Micronesia, Marianas, Carolines, Palau) south of the area of Japanese Islands is not considered here, as they do not belong to the Palaearctic Region.
Matsuda & Usinger (1957) treated the Calisius spp. of Micronesia and described seven new species (of nine recorded). According to the illustrations, C. tinianensis from Tinian Island (South Marianas) and C. longicornis from Ponape (East Carolines), and additionally also C. dilaticeps Usinger, 1946 from Guam (Marianas) share the apically dilated and lamellate genae surpassing clypeus and the presence of a posterior sclerite of tergite VIII, hence they probably belonging to Nipponocalisius. These species can be distinguished from N. tomokunii sp. nov. by the different pale patch on the scutellum and the pronotum being only sinuate, not distinctly bilobate; C. tinianensis also by its smaller size (2.45 mm), and C. longicornis by its larger size (4.0– 4.3 mm) and longer antennal segment IV.
A re-examination of a voucher specimen concluded that “ Calisius sp. ” in Tomokuni (1984) is proved to belong to this new species (Figs 32a, a’, 32b, b’).
The new species was found in the stomach content of the invasive alien green anole, indicating that it is preyed on by this lizard (Takahashi et al. 2014). The elimination of the alien green anole is necessary for conservation of this new species.
The unavailable name Nipponocalisius tomokunii mentioned by Heiss (2023) pertains to this new species.
description: Published as part of Heiss, Ernst, Shimamoto, Shusuke & Nagashima, Seidai, 2024, Review of the flat bug subfamily Calisiinae from Japan, with description of a new genus and four new species (Hemiptera: Heteroptera: Aradidae), pp. 54-68 in Zootaxa 5432 (1) on pages 58-59, DOI: 10.11646/zootaxa.5432.1.4, http://zenodo.org/record/10898520