A new Indian species of the orb-weaving spider genus Glenognatha Simon, 1887, with a new combination and a new synonymy of Tylorida marmorea (Pocock, 1901) (Araneae, Tetragnathinae)

The spider genus Glenognatha Simon, 1887 (Tetragnathidae) currently has 34 nominal species distributed in Afrotropical region, Indo-Malaya, Nearctic, Neotropics, Oceania and Palearctic regions (Cabra-García Brescovit 2016; World Spider Catalog 2020). It has one representative in India: Glenognatha dentata (Zhu Wen, 1978) (World Spider Catalog 2020). The genus Pachygnatha Sundevall, 1823 currently comprises 46 nominal species distributed in Africa, Holarctic, South and South-East Asia (World Spider Catalog 2020). Biswas and Roy (2004) recorded this genus in India, while they described Pachygnatha silentvalliensis Biswas Roy, 2004. The species is known from its original verbal description only since the genitalic illustrations were apparently not published along with the description (Biswas Roy 2004), thus leaving its identity obscured. To redescribe and illustrate this species, we examined its type material and found that Biswas and Roy (2004) had misidentified the species and in fact it belongs to Tylorida Simon, 1894. In this paper, we describe a new Glenognatha species from the southern Western Ghats of India, transfer Dyschiriognatha ganeshi Bodkhe, Manthen Tanikawa, 2014 to Glenognatha and synonymise P. silentvalliensis with Tylorida marmorea (Pocock, 1901).