An Integrative Approach to the Taxonomy ofOenopiellaBergroth (Hemiptera: Heteroptera: Pentatomidae: Pentatominae: Carpocorini) with the Description of Two New Species from Argentina and Southern Brazil

Abstract

Integrative taxonomy" is a conceptual multisource approach in which the nomination of a species is considered as a hypothesis subject to evaluation through different empirical evidence. In this study, we followed a hypothesis-driven approach, where a set of specimens are used to test previous hypotheses about the existence of species. Thus, Oenopiella Bergroth is revised, based on morphology with emphasis on the genitalia of both sexes. Oenopiella unidentata Spinola, Oenopiella punctaria Stâl, and Oenopiella pallidula Stâl are redescribed and illustrated, and two new species are described, Oenopiella ventanensis Grazia sp. nov. from Argentina and Oenopiella flonensis Fernández-Aldea sp. nov. from southern Brazil. A key to separate the species is provided. The reliability of O. punctaria and O. unidentata is evaluated through a reanalysis of their morphological characters, by exploring differences in qualitative and quantitative morphologic characteristics. All lines of evidence support these species hypotheses.

Rapid differentiation and asynchronous coevolution of male and female genitalia in stink bugs

“…These three structures, together with some colouration aspects, correspond to the majority of nongenital morphological information used to define and recognize species in Chinavia and Pentatomidae as a whole (e.g. Schwertner & Grazia, ; Fernández‐Aldea et al ., ; Genevcius & Schwertner, ), thus being most likely among the fastest evolving somatic structures across the family.…”

“…Bernardes et al ., ). Studies with species complexes in the family have shown the potential of such characters to differentiate even among species with probable recent divergence (Genevcius et al ., ; Fernández‐Aldea et al ., ). In particular, the shape of head is remarkably divergent in phytophagous hemipterans as a result of shifts in feeding habits and habitat (Torres et al ., ; Zahniser & Dietrich, ).…”

“…Virtually, all taxonomic studies in the family reveal considerable and remarkable differences even between sister species (e.g. Genevcius et al ., ; Greve et al ., ; Fernández‐Aldea et al ., ), implying that within‐species variation may not be quite significant. Studies with species groups and complexes in the family give support to this assertion (Rolston, ; Memon et al ., ).…”

Phylogenetic analysis of theEuschistusgroup (Hemiptera: Pentatomidae) suggests polyphyly ofDichelopsSpinola, 1837 with the erection ofDiceraeusDallas, 1851, stat. rev.

“…Grazia 1988; Rolston and Rider 1988; Fernández‐Aldea et al . 2014). These genera share the presence of a pair of dorsal processes on the phallotheca and spout shaped ostiolar peritreme of the metasternal gland (Rider 1995; Rider et al .…”

A teralogic case in Oenopiella punctaria (Stål, 1859) (Heteroptera: Pentatomidae: Pentatominae: Carpocorini) from the Aysén region (Chile)

“…Recent collections in the Aisén Region of Chile, allowed us to recognize a teratological case in Oenopiella punctaria (Stål, 1859) including hemiteries and ectromelies. Oenopiella punctaria is one of the 27 species of Pentatominae (Carpocorini) recorded from Chile (Faúndez & Rider, 2014a), and it is also distributed in Argentina, Brazil and Uruguay (Fernández-Aldea et al 2014). No further data is known about O. punctaria (e.g.…”