New Neotropical species of <i>Hygronemobius</i> Hebard, 1913 (Orthoptera: Grylloidea: Nemobiinae), including a brief discussion of male genitalia morphology and preliminary biogeographic considerations of the genus

Abstract

Three new Neotropical species of Hygronemobius Hebard are described from Atlantic Forest remnants in southeastern Brazil: Hygronemobius indaia sp. n. and Hygronemobius iperoigae sp. n. from the state of São Paulo and Hygronemobius guriri sp. n. from the state of Espírito Santo. We provide photographs of types and male genitalia, and discuss the morphology of male genitalia, taxonomy, calling songs and biogeographic distribution of the genus.

Rare or Poorly Known Caribbean Orthopterans. Part 1. The True Generic Identity of Hygronemobius Histrionicus Zayas, 1976 (Orthoptera: Trigonidiidae: Nemobiinae)

“…Habitus: Small size, prominent eyes occupying almost totally the surfaces of the genae, body stout and short. Hygronemobius the size is larger, the eyes are smaller and do not occupy totally the genae, and the body is generally larger and narrower (see Desutter-Grandcolas, 1993;Ribeiro Pereira et al, 2013). 2.…”

“…Tegmina and alae: Both sexes apterous. In Hygronemobius, tegmina are always present in males and usually reduced to triangular lateral pads in females, whereas alae are largely absent in both sexes (see Desutter-Grandcolas, 1993;Ribeiro Pereira et al, 2013). 4.…”

“…1). In subsequent taxonomic papers on Nemobiinae, all other authors merely cited this species without asking themselves whether its generic placement was right or not (e.g., Otte & Perez-Gelabert, 2009;Ribeiro Pereira et al, 2013;Desutter-Grandcolas & Hugel, 2016). The most probable reason was that no specimens were available except for the syntypes, all deposited in the private collection of Fernando de Zayas, who died in 1983. The author of this paper is currently conducting a thorough revision of some elusive Caribbean orthopterans that for a long time have remained neglected or poorly known.…”

Two new species of Hygronemobius Hebard, 1913 (Orthoptera, Grylloidea, Nemobiinae) from Brazilian Amazon

“…Hygronemobius Hebard, 1913 comprises 28 valid species distributed in all biogeographic subregions of the Neotropics occurring from latitude 30° N [H. alleni (Morse), Florida State, USA] to latitude 27° S [H. nemoralis (Saussure), Corrientes province, Argentina] (Eades et al 2013;Pereira et al 2013). Despite the fact that Hygronemobius species are non-volant, i. e. they do not fly, the genus can be considered the Neotropical group of Nemobiinae that has the highest known distribution, covering approximately 6500 Km.…”

“…There are only eight species of Hygronemobius with described calling song in literature (Desutter-Grandcolas 1993;Otte & Peck 1998;Walker & Moore 2011;Pereira et al 2013), three of them for the Amazonian subregion (H. albolineatus Desutter-Grandcolas, H. amoenus Chopard, H. tetraplagion Desutter-Grandcolas), two for the Caribbean subregion (H. daphne Otte & Peck and H. speculi Mcneill), one for southern Florida, USA [(H. alleni (Morse)], and two for Parana subregion (H. indaia Pereira, Miyoshi & Martins and H. iperoigae Pereira, Miyoshi & Martins).…”