Omoplax desecta

Omoplax desecta (Horváth, 1912) Figs 1 B, 2 B, 3 B, 4 B, 5 B, 6 B, 7 B, 8 B, 9 B, 10 B, 11 B, 12 B, 13 B, 14 B, 15 F – H Stephanitis (Omoplax) desecta Horváth, 1912: 337. Syntype (s): ♀; type locality: Japan • Ogasawara [= Ogasawara Islands]; Laboratory of Systematic Entomology, Faculty of Agriculture, Hokkaido University, Sapporo, Japan (Tomokuni 1994: 844; Souma 2022 a: 125). Omoplax desecta: Takeya (1962: 74) (new combination). References. Drake (1948: 55) (checklist: genus); Takeya (1951: 14) (checklist: eastern Asia); Drake and Maa (1953: 100) (checklist: genus); Drake (1956: 116) (distribution); Drake and Ruhoff (1960: 83) (catalog); Drake and Ruhoff (1965: 336) (catalog); Nakane (1970: 28) (checklist: Ogasawara Islands); Miyamoto and Yasunaga (1989: 167) (checklist: Japan); Nishimura and Arai (1989: 38) (distribution); Kato (1992: 79) (checklist: Ogasawara Islands); Yasunaga et al. (1993: 179) (monograph); Tomokuni (1994: 844) (type material); Yasunaga (1995: 20) (illustration); Péricart and Golub (1996: 51) (checklist: Palearctic); Miyano (1998: 8) (distribution); Guilbert (2001: 551) (distribution); Karube and Takakuwa (2004: 83) (illustration); Ohbayashi et al. (2004: 32) (checklist: Ogasawara Islands); Government of Japan (2010: 208) (checklist: Ogasawara Islands); Yamada and Tomokuni (2012: 198) (monograph); Takahashi et al. (2014: 163) (natural enemy); Yamada and Ishikawa (2016: 432) (checklist: Japan); Souma and Kamitani (2021: 8) (distribution: part); Souma (2022 a: 125) (distribution: part); Shimamoto and Ishikawa (2023: 93) (catalog: part); Souma (2023: 9) (monograph). Several studies conducted before the 1980 s recorded this species as Stephanitis (Omoplax) desecta (Drake 1948; Takeya 1951; Drake and Maa 1953; Drake 1956; Drake and Ruhoff 1960, 1965; Nakane 1970; Nishimura and Arai 1989). Material examined. Non-types, Japan • 1 ♂; Ogasawara Isls, Chichijima Is.; 6 May 1974; Y. Hori leg.; NSMT • 1 ♀; same locality data as for preceding; Rhaphiolepis indica var. tashiroi; 20 Mar. 2001; G. Tokihiro; NSMT • 1 ♀; Ogasawara Isls, Hahajima Is., Higashiko; 5 Jun. 1976; T. Nakane leg.; NSMT • 1 ♀; Ogasawara Isls, Hahajima Is., Mt. Chibusa; 8 Jun. 1976; T. Nakane leg.; NSMT • 1 ♀; same locality data as for preceding; 6 Jul. 1997; T. Kishimoto leg; NSMT • 2 ♀♀; same locality data as for preceding; 7 Jul. 1997; K. Matsumoto leg; NSMT • 1 ♀; same locality data as for preceding; 27 May 2022; T. Yoshida leg.; SIHU • 2 ♂♂ 5 ♀♀; same locality data as for preceding; Rhaphiolepis indica var. tashiroi; 2 Oct. 2024; J. Souma; SIHU • 1 ♂; Ogasawara Isls, Chichijima Is., Mt. Mikazuki; 12 Jun. 1976; T. Nakane leg.; NSMT • 23 ♂♂ 18 ♀♀ 1 fifth instar nymph; same locality data as for preceding; 18 Apr. 1997; K. Matsumoto leg.; NSMT • 1 ♀; same locality and date data as for preceding; T. Kishimoto leg.; NSMT • 1 ♂ 3 ♀♀; same locality data as for preceding; 23 Apr. 1997; K. Matsumoto leg.; NSMT • 2 ♂♂ 6 ♀♀; same locality data as for preceding; 17 May 2024; Y. Hisasue leg.; SIHU • 1 ♂ 1 ♀ 1 fifth instar nymph; same locality data as for preceding; Rhaphiolepis indica var. tashiroi; 21 Sep. 2024; J. Souma; SIHU • 2 ♀♀; same locality, host plant, and collector data as for preceding; 22 Sep. 2024; SIHU • 2 ♀♀; same locality data as for preceding; 25 Oct. 2024; Y. Hisasue; SIHU • 1 ♀; same locality and collector data as for preceding; 5 Nov. 2024; SIHU • 1 ♀; same locality and collector data as for preceding; 10 Jan. 2025; SIHU • 3 ♂♂ 4 ♀♀; same locality and collector data as for preceding; 15 May 2025; SIHU • 1 ♂ 1 ♀; Ogasawara Isls, Chichijima Is., Mt. Shigure; 8 Dec. 1977; M. Tomokuni leg.; NSMT • 1 ♀; Ogasawara Isls, Chichijima Is., Mt. Takayama; 30 Jul. 1996; K. Matsumoto leg.; NSMT • 2 ♀♀; Ogasawara Isls, Hahajima Is., Kuwanoki-zawa; 4 Aug. 1996; K. Matsumoto leg.; NSMT • 1 ♂; Ogasawara Isls, Chichijima Is., Higashidaira; 15 Apr. 1997; K. Matsumoto leg.; NSMT • 14 ♂♂ 8 ♀♀ 3 fifth instar nymphs 1 fourth instar nymph; Ogasawara Isls, Chichijima Is., Buta Beach; 16 Apr. 1997; K. Matsumoto leg.; NSMT • 7 ♂♂ 4 ♀♀; same locality and date data as for preceding; T. Kishimoto leg.; NSMT • 1 ♀; Ogasawara Isls, Chichijima Is., Nagatani – Mt. Tsutsuji; 17 Apr. 1997; K. Matsumoto leg; NSMT • 18 ♂♂ 14 ♀♀; Ogasawara Isls, Hahajima Is., Minamizaki; 19 Apr. 1997; K. Matsumoto leg; NSMT • 1 ♂; same locality data as for preceding; 4 Jul. 1997; T. Kishimoto leg; NSMT • 1 ♂; same locality data as for preceding; 15 Jul. 2024; Y. Uehara leg.; SIHU • 1 ♀; same locality data as for preceding; Rhaphiolepis indica var. tashiroi; 27 Sep. 2024; J. Souma; SIHU • 1 ♂ 3 ♀♀; Ogasawara Isls, Hahajima Is., Nakanotaira – Minamizaki; 19 Apr. 1997; K. Matsumoto leg; NSMT • 1 ♂; Ogasawara Isls, Hahajima Is., Mt. Mikazuki (non-existent place name: mislabeling?); 19 Apr. 1997; K. Matsumoto leg; NSMT • 1 ♂ 1 ♀; Ogasawara Isls, Hahajima Is., Komoridani; 20 Apr. 1997; K. Matsumoto leg; NSMT • 1 ♂ 1 ♀; Ogasawara Isls, Hahajima Is., Mt. Yakeyama; 20 Apr. 1997; K. Matsumoto leg; NSMT • 3 ♂♂; Ogasawara Isls, Hahajima Is., Oki-mura; 20 Apr. 1997; K. Matsumoto leg; NSMT • 1 ♀; same locality and date data as for preceding; T. Kishimoto leg; NSMT • 1 ♀; Ogasawara Isls, Chichijima Is., Minamifukurozawa; 23 Apr. 1997; K. Matsumoto leg; NSMT • 3 ♀♀ 1 fifth instar nymph; same locality data as for preceding; 23 Mar. 2024; Y. Hisasue leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Ichinotani; 26 Apr. 1997; K. Matsumoto leg; NSMT • 1 ♂; Ogasawara Isls, Ototojima Is., Kurohama; 27 Apr. 1997; K. Matsumoto leg; NSMT • 2 ♂♂; Ogasawara Isls, Hahajima Is., Nishiura; 4 Jul. 1997; K. Matsumoto leg; NSMT • 1 ♀; Ogasawara Isls, Hahajima Is., Mt. Kuwanoki; 4 Jul. 1997; T. Kishimoto leg; NSMT • 1 ♂ 1 ♀; Ogasawara Isls, Hahajima Is., Tamagawa Dam; 5 Jul. 1997; K. Matsumoto leg.; NSMT • 1 ♀; same locality data as for preceding; 14 Jul. 2024; Y. Uehara leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Mt. Tsutsuji; 10 Jul. 1997; T. Kishimoto leg.; NSMT • 1 ♂; Ogasawara Isls, Ototojima Is., Ainosawa; 1 Jul. 2021; T. Matsumoto & S. Shimamoto leg.; SIHU • 6 ♂♂ 4 ♀♀; same locality data as for preceding; 3–4 Jul. 2024; N. Tsuji leg.; SIHU • 2 ♀♀; Ogasawara Isls, Anijima Is., Central Plateau; 1 Jul. 2021; T. Matsumoto & S. Shimamoto leg.; SIHU • 1 ♂; same locality and collector data as for preceding; 2 Jul. 2021; SIHU • 1 ♀; Ogasawara Isls, Anijima Is., Mt. Togari; 29 Jul. 2021; T. Matsumoto & S. Shimamoto leg.; SIHU • 1 ♂; Ogasawara Isls, Hahajima Is., Igumadani, Sekimon; alt. 370 m; 26 May 2022; T. Yoshida leg.; SIHU • 2 ♂♂; Ogasawara Isls, Chichijima Is., Susaki; 21 May 2023; Y. Hisasue leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Mt. One; 4 Feb. 2024; Y. Hisasue leg.; SIHU • 2 ♂♂ 1 ♀; Ogasawara Isls, Meijima Is.; 14 Jun. 2024; N. Tsuji leg.; SIHU • 1 ♂; Ogasawara Isls, Hahajima Is., Nishidai; 17 Jun. 2024; N. Tsuji leg.; SIHU • 1 ♂ 5 ♀♀; Ogasawara Isls, Hahajima Is., Shizukazawa; 20 Jun. 2024; Y. Hisasue leg.; SIHU • 7 ♂♂ 6 ♀♀; Ogasawara Isls, Chichijima Is., Mt. Ogami; alt. 10–90 m; 11 Jul. 2024; Y. Uehara leg.; SIHU • 1 ♀; Ogasawara Isls, Ototojima Is., Mt. Sokuryogatake; 12 Jul. 2024; Y. Uehara leg.; SIHU • 1 ♂ 1 ♀; Ogasawara Isls., Anijima Is., Mansaku – Kanaimisaki; 12 Jul. 2024; N. Tsuji leg.; SIHU • 1 ♀; Ogasawara Isls, Hahajima Is., Nijuccho Pass; alt. 160 m; 15 Jul. 2024; Y. Uehara leg.; SIHU • 5 ♂♂ 1 ♀; Ogasawara Isls, Mukohjima Is.; alt. 0–90 m; 16 Jul. 2024; Y. Uehara leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Mt. Tsuitate; 19 Jul. 2024; Y. Hisasue leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Hatsuneura; 28 Jul. 2024; N. Tsuji leg.; SIHU • 1 ♂ 1 ♀; Ogasawara Isls, Chichijima Is., Higashi-machi; Calophyllum inophyllum; 21 Sep. 2024; J. Souma leg.; SIHU • 1 ♀; same locality, host plant, and collector data as for preceding; 8 Oct. 2024; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Mt. Yoake; Rhaphiolepis indica var. tashiroi; 22 Sep. 2024; J. Souma leg.; SIHU • 1 ♂ 1 ♀; Ogasawara Isls., Ototojima Is., Kurohama – Ichinotani; Rhaphiolepis indica var. tashiroi; 23 Sep. 2024; J. Souma leg.; SIHU • 3 ♂♂ 1 ♀; Ogasawara Isls., Anijima Is., Tamana Beach – Mt. Mikaeri; Rhaphiolepis indica var. tashiroi; 24 Sep. 2024; J. Souma leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Ogamiyama Park; Rhaphiolepis indica var. tashiroi; 25 Sep. 2024; J. Souma leg.; SIHU • 1 ♂; Ogasawara Isls, Chichijima Is., John Beach; Calophyllum inophyllum; 7 Oct. 2024; J. Souma leg.; SIHU • 2 ♀♀; Ogasawara Isls, Nishijima Is.; 17 Nov. 2024; N. Tsuji leg.; SIHU • 1 ♂; Ogasawara Isls, Chichijima Is., Oku-mura; 10 Dec. 2024; Y. Hisasue leg.; SIHU • 1 ♀; Ogasawara Isls, Hahajima Is., Hyogidaira; Rhaphiolepis indica var. tashiroi; 9 Mar. 2025; J. Souma leg.; SIHU • 1 ♀; same locality, host plant, and collector data as for preceding; 11 Mar. 2025; SIHU • 1 ♂; Ogasawara Isls, Chichijima Is., Kominato Beach; 25 Apr. 2025; Y. Hisasue leg.; SIHU • 1 ♀; Ogasawara Isls, Chichijima Is., Mt. Sakaiura; 27 Apr. 2025; Y. Hisasue leg.; SIHU • 1 ♂; Ogasawara Isls, Chichijima Is., Mulberry Bay; 29 Apr. 2025; Y. Hisasue leg.; SIHU • 1 ♀; Ogasawara Isls, Hahajima Is., Nishiura; 4 May 2025; Y. Hisasue leg.; SIHU • 1 ♂ 4 ♀♀; Ogasawara Isls, Ototojima Is., Shikahama – Mt. Hirone; 27 May 2025; S. Shimamoto leg.; SIHU • 3 ♂♂ 5 ♀♀; Ogasawara Isls, Ototojima Is., Kohama; 2 Jun. 2025; Y. Hisasue leg.; SIHU. The four nymphs recorded above are in poor condition and are thus not described in the present study. Diagnosis. Omoplax desecta is recognized among the other Omoplax species based on a combination of the following characteristics: rostrum reaching posterior margin of metasternum (Fig. 11 B); pronotal disc pale brown (Figs 3 B, 4 B, 5 B, 6 B); hood more than 0.5 times as wide as maximum width of head across compound eyes, not reaching apex of clypeus (Fig. 14 B); paranotum without areolae in middle part, with areolae in remaining parts; anterior margin of hemelytron weakly curved downward in apical half (Figs 7 B, 8 B, 9 B, 10