These first North American records for Polymerus cognatus (Fieber) from across Canada and the northeast United States, and P. vulneratus (Wolff) from northwest North America, indicate that the two species are naturally Holarctic. Diagnoses and dorsal habitus illustrations are provided to distinguish the taxa from other North American Polymerus species. An argument for considering P. balli Knight, P. cognatus, P. elegans (Reuter), P. flaviloris Knight, P. froeschneri Knight, and P. vulneratus a monophyletic species-group is presented.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0008347X00024263

Taxonomia das especies do genero polymerus hahn, 1831 (hemiptera, miridae), da regiao cisandina, america do sul

The first nearctic records of two holarctic species of polymerus hahn, with remarks on a monophyletic species-group (heteroptera: miridae: mirinae)

Espirito Santo is a Brazilian state that has a wide variety of habitats, providing a high biological diversity of fauna and flora. However, few reports had been shown about the insect diversity of this region, especially of heteropterans insects that inhabit on pasture ecosystems. In the present study, forty-three species of Heteroptera belonging to thirteen families were collected on pastures on Espirito Santo state, Brazil: Alydidae (1 sp.), Berytidae (3 sp.), Blissidae (1 sp.), Coreidae (7 sp.), Miridae (16 sp.), Nabidae (1sp.), Pentatomidae (3 sp.), Pyrrhocoridae (1 sp.), Reduviidae (6 sp.), Rhopalidae (1 sp.), Rhyparochromidae (1sp.), Thaumastocoridae (1 sp.) and Tingidae (1 sp). Among the species; Cebrenis tenebrosa (Brailovsky, 1995) is recorded for the first time in Brazil. The range extension is also included for several heteropterans collected on the Espirito Santo state. The following species: Blissus aff. antillus (Leonard, 1968); Collaria oleosa (Distant, 1883); Oebalus ypsilongriseus (De Geer, 1773), and Trigonotylus tenuis (Reuter, 1893) were observed causing damages on pastures, therefore, in this study, we suggested those species as potential pastures pests. This study aims to increase the knowledge about the heteropterans and to show the presence of some pest species that may cause serious damage to pastures and consequently affect the economy of cattle breeders on the state.

Additional excerpts

https://dialnet.unirioja.es/descarga/articulo/7706896.pdf

Survey of the Heteroptera (Hemiptera) on pastures from Espírito Santo state, Brazil: new records, range extension, and notes of potential pests

Ministerio de Educación Pública

Fil: Cherot, Frederic. Service Public de Wallonie. Departement de l’etude du milieu naturel et agricole; Belgica

Taxonomia das especies do genero polymerus hahn, 1831 (hemiptera, miridae), da regiao cisandina, america do sul

Citations

The first nearctic records of two holarctic species of polymerus hahn, with remarks on a monophyletic species-group (heteroptera: miridae: mirinae)

Survey of the Heteroptera (Hemiptera) on pastures from Espírito Santo state, Brazil: new records, range extension, and notes of potential pests

Ministerio de Educación Pública

Miscellanea Miridologica IV. Taxonomy and chorology of new or little known taxa of Andean and Neotropical Regions (Heteroptera: Miridae)