Account
What the sources say about this taxon, as written.
description · 
Plazi
Description. In addition to the genus characters, species is noticeably smaller in size. Stridulum on FW with 22–29 numbers of teeth (n=2). Basitarsomere III with 4–5 inner and 6–7 outer spines. ♂ BL PL PW FWL FWW FIIIL FIIIW TIII Holotype 9.8 1.2 2.5 2.6 2.4 5.5 2.2 3.2 ParatypeS (n=4) 8.2 (0.4) 1.2 (0.1) 2.3 (0.2) 2.2 (0.2) 2.4 (0.1) 5.1 (0.1) 2 (0.1) 3.4 (0.5) ♀ BL PL PW FIIIL FIIIW TIIIL OVIL Allotype 8.7 1.4 2.6 5.8 2 2.9 3.1 Paratype (n=3) 8.9 (0.2) 1.5 (0.1) 2.8 (0.2) 6.2 (0.4) 2.4 3.5 (0.3) 3.3 (0.1) Discussion South American biodiversity has always been unique (Jenkins et al. 2013). Both the described field cricket species here validate to this point with their remarkably distinct morphological features. For example, presence of spines above subapical spurs on TIII, which was also documented from recently described Gryllinae crickets from Peru (Desutter-grandcolas et al. 2014). More than a thousand species of Gryllinae are known from the Old World and one of the key characters that have long been given to identify and separate this cricket group from others (like Nemobiines, long considered close to Gryllinae , but see Chintauan-marquier et al . 2016) has been the absence of spurs on TIII. Based on recent taxonomic studies there becomes an urgent need to revise the diagnostic keys for families and subfamilies ( Hugel and Desutter-Grandcloas, 2017 in press ). Another interesting combination of characters relates to the presence of stridulum but absence tympanum as seen in Perugryllus estiron Jaiswara , n. sp. : both sexes lack tympanum on their TI and females are completely apterous, while males possess forewing with series of teeth on the stridulatory file. This is an interesting combination of features, which would call for observation of mating behavior in this species: do males actually call? Do females locate males acoustically? Or are the forewings of the males producing other kind of mating signals (call? courtship?) that can be perceived by the females without a tympanum?