A revision of Sagriva (Hemiptera: Heteroptera: Dinidoridae)

Abstract

<jats:title>Abstract</jats:title> <jats:p>The Indomalayan genus <jats:italic>Sagriva</jats:italic> Spinola, 1850 (Hemiptera: Heteroptera: Dinidoridae: Dinidorinae) is revised. The identity of its single previously valid species, <jats:italic>S. vittata</jats:italic> Spinola, 1850, is clarified based on the relevant type material, the species is diagnosed, illustrated, and recorded for the first time from Thailand and Laos. A new species, <jats:italic>Sagriva banna</jats:italic> sp. nov., is described from Yunnan Province of China and Yen Bai Province of Vietnam.</jats:p>

Review of the Neotropical genus Rhyncholepta with descriptions of three new species-group taxa (Hemiptera, Heteroptera, Pentatomidae)

“…Morphological terminology mostly follows Tsai et al (2011), Tsai and Rédei (2014), Kment (2015), Kment et al (2016) and Rédei (2017). Parts of the thoracic efferent system of the metathoracic scent glands are named in accordance with Kment and Vilímová (2010).…”

Claviplatys henryi, a new genus and species of Plataspidae from southern India (Hemiptera, Heteroptera)

“…Digital photographs were taken with a Nikon D90 camera equipped with AF-S Micro Nikkor 60mm f/2.8G ED macro lens. Morphological terminology mainly follows Tsai et al (2011), Rédei and Jindra (2015), and Rédei (2016, 2017a). …”

Outside the pattern: Evolution of the genital asymmetry in Saicinae (Hemiptera: Heteroptera: Reduviidae)

“…Saicinae comprises 25 genera and 159 species worldwide (Castro‐Huertas et al, 2023; Gil‐Santana & Marques, 2005; Maldonado Capriles, 1990; Melo & Coscarón, 2005; Putshkov & Putshkov, 1985). Eleven genera are known from the Neotropical Region (Gil‐Santana et al, 2015, 2020; Gil‐Santana, 2011) with the remaining taxa distributed in the Afrotropical, Australian and Oriental regions (Rédei & Tsai, 2009, 2010; Villiers, 1969, 1979). The subfamily is characterized by the absence of ocelli; the second visible segment of the labium bulbous and expanded basally; the labium and the gular region with usually spiniform setae; and the presence of scopula on all tarsi (Gil‐Santana et al, 2015; Melo & Coscarón, 2005; Schuh & Weirauch, 2020).…”

“…However, the asymmetric condition is a phenomenon not well understood, because basic information on the genital morphology, coupling and copula mechanisms, mating behavior, physiology, genetics, and ecology of most of the groups are unknown or insufficient for a multifactorial approach (Huber et al, 2007; Huber, 2010). Saicinae exhibits mostly symmetric genitalic structures, but asymmetric male genitalia have been recorded in genera such as Gallobelgicus Distant, 1906, Polytoxus Spinola, 1840, and recently in Pseudosaica Blinn, 1990 (Ishikawa & Yano, 1999, 2002; Rédei & Tsai, 2009, 2010; Castro‐Huertas et al, 2023). This condition is visible on three regions of the phallus: the dorsal and ventral phallothecal sclerites, and the endosomal sclerites; and they could be the three of them asymmetric or only one (usually the ventral phallotecal sclerite) (Figure 1).…”

“…Consistently with other reduviids, genital information is scarce within Saicinae: nearly 18% have not any male genitalic structures described or illustrated. Most descriptions have an emphasis on the medial process of pygophore and parameres; and only a few of them include an illustration and/or description of the phallus (usually without being everted) (Blinn, 1990, 1994, 2008; Cobben & Wygodzinsky, 1975; Gil‐Santana & Costa, 2009; Gil‐Santana et al, 2010, 2020; Hsiao, 1965; Ishikawa & Okajima, 2003, 2004; Ishikawa & Yano, 1999, 2002; Ishikawa, 2002; Rédei & Tsai, 2010). This tendency gets worse among the females: nearly 82% have not any female genitalic structures described or illustrated.…”