Description of two smallest field crickets from South America, Laureopsis nauta Jaiswara gen. nov., sp. nov. and Perugryllus estiron Jaiswara gen. nov., sp. nov. (Orthoptera, Grylloidea, Gryllidae, Gryllinae)

Abstract

Gryllinae are one of the most diverse and widely distributed cricket groups. However, in South America they are known only from 10 genera. We update this list by describing two new genera and species of field crickets i.e. Laureopsis nauta Jaiswara gen. nov., sp. nov. and Perugryllus estiron Jaiswara gen. nov., sp. nov. from Peru.

New genus and species of the tribe Gryllini (Orthoptera: Gryllidae: Gryllinae) from Peru

“…nov., male: 1 -general view from above; 2-4 -genitalia from above (2), from below (3) and from side (4). Jaiswara, 2017) is unstudied or insufficiently studied; these genera may be synonymous to Miogryllus or Geogryllus Otte et Perez-Gelabert, 2009(Gorochov 2019Gorochov and Izerskiy 2019) and differ from the new genus in the following characters: the type species of Gryllita has its male tegmen with a narrower mirror and less sinuous oblique veins (Hebard 1935); the Mexican species of this genus and Rubrogryllus have the same characters as well as the male genitalia with a deeply bifurcate posterior epiphallic part (Vickery 1993(Vickery , 1997; Laureopsis and Perugryllus also have the same characters, but Perugryllus additionally has a more strongly reduced male tegminal stridulatory apparatus (Jaiswara and Desutter-Grandcolas 2017). From the other subtribes of Gryllini, the new genus is distiunguished by a rather complicate structure of the ectoparameres having a characteristic posterodorsal sclerite.…”