Revisiting Stl's thoughts: formalizing the ictericus group in Euschistus (Euschistus) (Hemiptera: Heteroptera: Pentatomidae).

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.

A distributional synopsis of the Pentatomidae (Heteroptera) north of Mexico, including new state and provincial records.

The species of Pentatomidae known to occur north of Mexico, comprising 223 species in 68 genera, are enumerated with taxonomic notes and updated and annotated distributions. Included in this update are 126 new state records reported for 62 pentatomid species in 30 genera. The copious annotations in these distributions and attendant bibliography serve as an extensive compilation of overlooked references that might contain distributional records for other insect, especially heteropteran, species.

emColimacoris/em emjoceliae/em, sp. nov. (Hemiptera: Miridae: Deraeocorinae: Hyaliodini): A new species from Panama, with a Key to the species of Colimacoris.

The new Neotropical hyaliodine Colimacoris joceliae Kim Jung, sp. nov., is described from Panama. Morphological information, including a description and diagnosis of the new species is presented with photographs. A key for the identification of the species of Colimacoris is also provided.

Two new species of Tingidae (Hemiptera: Heteroptera) from Panama.

Two new species of Tingidae are described from Panama: Acanthotingis deltoides sp. nov. and Stephanitis joceliae sp. nov. Descriptions and diagnosis for both Acanthotingis Monte and Stephanitis Stål are provided, and a key is given for the separation of the two known species of Acanthotingis. This is the first record of both genera from Panama. A checklist of all Neotropical species of both genera is presented.

emGraziacrophyma/em gen. nov., a new genus of South American Acanthosomatidae (Hemiptera: Heteroptera).

The genus Acrophyma Bergroth currently contains two species, the Andean A. cumingii (Westwood) and the Neotropical A. bicallosa (Stål). The examination of types and new material revealed that among the Neotropical species the Brazilian population differs from the Colombian, and the first one belongs to a new species in this group. A morphological analysis of the genus indicated the Neotropical species are different from the Andean species. According to the current most used generic characters in acanthosomatids, Neotropical species should be placed in a new genus. This is also supported by biogeographical relationships. New distributional records for the species of this group are provided.

Taxonomic review of Sibaria Stål, 1872 (Heteroptera: Pentatomidae: Pentatominae: Carpocorini), with description of a new species.

Sibaria Stål is a genus of Pentatomidae occurring exclusively in the Neotropical region. Since its description, little information has been added to the knowledge of the taxon. The hypothesis of monophyly of Sibaria was recently supported by a phylogenetic analysis based on morphological and molecular data. The purpose of this study is to provide a review of Sibaria, redescribe the valid species, and describe a new species. The genus includes four species: S. andicola Breddin, S. armata (Dallas), S. englemani Rolston, and S. amazonica sp. nov.. Diagnoses, macrophotographs (habitus, external and internal genitalia), an identification key, and distribution records of the species are also provided.

A new genus and new species of Aeptini (Hemiptera: Heteroptera: Pentatomidae: Pentatominae) from Australia.

The aeptine Mariomella singularis gen. et sp. nov. is described and illustrated from Western Australia. With this new addition, the Aeptini diversity increases to 21 species in nine genera.

Kaytuesso flavolateralis gen. and sp. nov., a new monotypic genus of Oncomerinae (Hemiptera: Heteroptera: Tessaratomidae) from Papua New Guinea.

Kaytuesso flavolateralis gen. and sp. nov. is described from Papua New Guinea. The new genus is remarkable in that the only included species is one of the smallest species known within the Oncomerinae. The relationships among Kaytuesso and the related genera Agapophyta Guerin, Erga Walker and Musgraveia Leston and Scudder are discussed.

Review of the genus Menestheus Stål, 1868 (Hemiptera: Heteroptera: Pentatomidae).

The Aeptini (Pentatomidae: Pentatominae) genus Menestheus Stål, 1868, is redescribed. The original misidentification of the type species for Menestheus is corrected by action of first reviser herein by establishing Paramenestheus nercivus non Dallas, 1851 sensu Stal (1868) = Menestheus cuneatus Distant, 1899 as the type species. Menestheus mcphersoni sp. nov. is described and illustrated. Characters separating the two species are discussed.

Reevaluation of the type species and redescription of five species of Edessa (Heteroptera: Pentatomidae: Edessinae).

In accordance with the rules in the International Code of Zoological Nomenclature, the type species for the genus Edessa Fabricius, 1803 is now recognized to be Cimex antilope Fabricius, 1798 rather than the previously recognized Cimex cervus Fabricius, 1787. Edessa antilope is redescribed, as well as the following four species that have in the past been related or compared to E. antilope: E. arabs (Linnaeus, 1758) from French Guiana, Costa Rica and Panama (new record), E. helix Erichson, 1848 from Costa Rica, Panama, Venezuela, Suriname (new record), Guyana, Brazil (new record), Bolivia (new record) and Argentina (new record), E. ibex Breddin, 1903 from Costa Rica, Panama (new record), Ecuador, Brazil (new record), Peru and Bolivia (new record), and E. taurina Stål, 1862 from Mexico, Guatemala, Belize (new record), Honduras (new record). The distribution of Edessa antilope is expanded to Venezuela. The female of E. antilope and the male of E. taurina are described for the first time. Edessa antilope is removed from the synonymy of E. arabs and reinstated as valid species; additionally, E. costalis Stål, 1872 is removed from the synonym of E. helix and is placed as a junior synonym of E. antilope. Edessa saiga Breddin, 1903 is considered a junior synonym of E. ibex. Lectotypes are designated for all species. A key is provided for the identification of the species.

Review of the Genus Ambotingis Drake and Ruhoff (Hemiptera: Heteroptera: Tingidae).

Dictyla ainsliei (Drake and Poor) is transferred to the genus Ambotingis Drake and Ruhoff, redescribed, and reported from Costa Rica for the first time. Ambotingis senta (Drake and Hambleton) is also diagnosed, and a key for the separation of the two species is provided.

Notes on distributions for Argentinean Pentatomidae (Heteroptera: Pentatomoidea), with new records in the country

ABSTRACTIn this contribution, we present new distributional records from Argentina of 63 pentatomid species; three genera (Caonabo, Cromata and Taurocerus) and 14 species (Marmessulus brasiliensis, Podisus crassimargo, Cromata ornata, Acledra haematopa, Caonabo pseudocylax, Dichelops avilapiresi, Euschistus cribarius, E. paranticus, Mormidea maculata, Rio indistinctus, Banasa lanceolata, B. nigrifrons, Pallantia macunaima, and Taurocerus edessoides) are reported for the first time from Argentina; also we provided 81 new province records of another 49 species.

A new species of Acledra s. str. (Hemiptera: Heteroptera: Pentatomidae) from the highlands of Argentina and Bolivia, with a checklist and key to the species of the nominate subgenus.

Acledra (Acledra) bichromocornis n. sp. from the highlands of Argentina and Bolivia is described. A checklist of the species of Acledra s. str. is provided, including the distribution by country. A key to the species of Acledra s. str. is included.

Thestral incognitus, a new genus and species of Pentatomidae from Chile (Heteroptera: Pentatomidae: Pentatominae: Carpocorini).

Thestral incognitus, new genus and species of Pentatomidae (Pentatominae: Carpocorini) is described from central Chile. The relationships among this new genus and other South American genera are discussed.  Also, similarities are noted between Thestral and the Australian genus Poecilotoma. Poecilotoma is tentatively placed in the Carpocorini. A key to aid in the recognition of the genera of Chilean Carpocorini is provided.

Archaeoditomotarsus crassitylus, gen. and sp. nov. (Hemiptera: Heteroptera: Acanthosomatidae) from Chile.

Archaeoditomotarsus crassitylus, gen. and sp. nov. of Acanthosomatidae (Ditomotarsinae: Ditomotarsini), is described and illustrated. The biogeography of the new taxon is discussed and a key to the Chilean genera of Ditomotarsinae is included.