Laboratrio de Entomologia Sistemtica, Departamento de Zoologia, Instituto de Biocincias, Universidade Federal do Rio Grande do Sul, Bento Gonalves Avenue 9500, CEP 91509-900, Porto Alegre, RS, Brazil..
Entomology Department, School of Natural Resource Sciences, North Dakota State University, Fargo, ND, USA..
Zootaxa. 2022 Aug 3;5169(6):501-537. doi: 10.11646/zootaxa.5169.6.1.
Euschistus Dallas is distributed throughout the Western Hemisphere and is composed of 67 species in three subgenera: Euschistomorphus Jensen-Haarup, Lycipta Stl, and the nominate subgenus. Euschistus (Euschistus) includes several economically important species. Due to the lack of a phylogenetic analysis for the subgenus Euschistus, its groupings are based primarily on male genitalia. In this paper, the following Nearctic taxa that were first grouped together by Stl (1872), namely E. ictericus (Linnaeus), E. variolarius (Palisot de Beauvois), E. servus servus (Say), E. servus euschistoides (Vollenhoven), and E. tristigmus tristigmus (Say), are reviewed and redescribed. Several other similar, and probably related, taxa are also included in this study: E. tristigmus luridus (Dallas), E. inflatus Van Duzee, and E. latimarginatus Zimmer. Morphological patterns pertaining to the internal and external male and female genitalia allowed us to formalize the ictericus group to include the above-mentioned species (except E. tristigmus). The morphological overlap between the subspecies and sympatric areas of distribution have led us to consider E. servus euschistoides as a junior synonym of E. servus servus, and to corroborate the synonymy first proposed by Uhler (1861) of E. tristigmus luridus under E. tristigmus tristigmus.
戴拉斯稻绿蝽分布于西半球，由三个亚属的 67 个种组成：Euschistomorphus Jensen-Haarup、Lycipta Stl 和指名亚属。Euschistus (Euschistus) 包括几个具有重要经济意义的种。由于缺乏对 Euschistus 亚属的系统发育分析，其分组主要基于雄性生殖器。在本文中，Stl（1872）首次将以下近域分类群组合在一起，即 E. ictericus (Linnaeus)、E. variolarius (Palisot de Beauvois)、E. servus servus (Say)、E. servus euschistoides (Vollenhoven) 和 E. tristigmus tristigmus (Say)，进行了综述和重新描述。本研究还包括其他一些类似的、可能相关的分类群：E. tristigmus luridus (Dallas)、E. inflatus Van Duzee 和 E. latimarginatus Zimmer。内部和外部雄性和雌性生殖器的形态模式使我们能够将 ictericus 组正式化，包括上述物种（E. tristigmus 除外）。亚种之间和同域分布区之间的形态重叠使我们认为 E. servus euschistoides 是 E. servus servus 的次同物异名，并证实了 Uhler（1861）首次提出的 E. tristigmus luridus 是 E. tristigmus tristigmus 的同义词。
