A total of 108 species of spider species belonging to 84 genera and 25 families were identified from the scrub jungle of the Madras Christian College campus. Pagida salticiformis (O. Pickard-Cambridge, 1883) is recorded for the first time from India. Langona tigrina (Simon, 1885) is rediscovered 135 years since its first description and the unknown male is described and illustrated. A new combination, Langona davidi (Caleb, Mungkung & Mathai, 2015) comb. nov. is proposed for the species previously placed in Phlegra. Three new synonymys have been recognized: Clubiona foliata Keswani & Vankhede, 2014 and Clubiona pashabhaii Patel & Patel, 1973 are junior synonyms of Clubiona filicata O. Pickard-Cambridge, 1874 and Myrmarachne megachelae Kumar & Mohanasundaram, 1998 is a junior synonym of Myrmaplata plataleoides (O. Pickard-Cambridge, 1869). Distribution records of several species have been updated and as many as 31 species are recorded for the first time from Tamil Nadu State. The family Salticidae is the most diverse with 28 species belonging to 22 genera followed by Araneidae with 19 species in 11 genera. Guild structure analysis revealed seven feeding guilds of which, stalkers and orb-web weavers are the dominant feeding guilds followed by ground runners, ambushers, and scattered line weavers, respectively.

We describe a new plexippine genus, Tenkanagen. nov., supported by phylogenomic data from ultraconserved elements (UCEs), Sanger sequences of four genes, and morphological evidence. The type species, Tenkana manu (Caleb, Christudhas, Laltanpuii & Chitra, 2014), comb. nov. is transferred from Colopsus, as is Tenkana arkavathi (Caleb, 2022), comb. nov. The phylogenomic data places Tenkana among the plexippines near Hyllus C.L. Koch, 1846 and Telamonia Thorell, 1887, while the constrained four-gene phylogeny indicates that Tenkana is distinct from Colopsus. Additionally, we describe a new species, Tenkana jayamangalisp. nov.

The species of the genera Acantholycosa Dahl, 1908, Evippomma Roewer, 1959, Hippasosa Roewer, 1960 and Trochosa C.L. Koch, 1847 described/recorded from India, are reviewed. The following new combinations are recognized: Arctosa dhikala comb. et nom. nov. (ex. Trochosa), Arctosa kalpiensis (Gajbe, 2004) comb. nov. (ex. Hippasosa), Evippa baltoroi (Caporiacco, 1935) comb. nov. (ex. Acantholycosa), Pardosa evippiformis Caporiacco, 1935 comb. rest. (ex. Evippomma), and Pirata punctipes (Gravely, 1924) comb. nov. (ex. Trochosa). Photographs of all the examined type material and supplementary descriptions for A. dhikala comb. et nom. nov., E. baltoroi comb. nov., P. evippiformis comb. rest., and P. punctipes comb. nov. are provided. Lectotypes have been designated for E. baltoroi comb. nov., P. evippiformis comb. rest. and P. punctipes comb. nov. With the new combination for T. punctipes, the genus Pirata Sundevall, 1833 is recorded for the first time in India, and that for A. baltoroi and E. evippiforme show the record of the genera Acantholycosa and Evippomma from India is incorrect.

The type specimens of salticid species from Northeast India described by B. K. Biswas and K. Biswas kept in the National Zoological Collections, Kolkata were studied. Four new synonyms are recognized: Marpissa mizoramensis Biswas & Biswas, 2007 syn. nov. and Evarcha optabilis (Fox, 1937) syn. nov. with Evarcha flavocincta (C.L. Koch, 1846), and Phidippus tirapensis Biswas & Biswas, 2006 syn. nov. and Hyllus maskaranus Barrion & Litsinger, 1995 syn. nov. with Hyllus diardi (Walckenaer, 1837). A new combination is proposed: Pancorius manipuriensis (Biswas & Biswas, 2007) comb. nov. (ex. Marpissa). P. manipuriensis is illustrated for the first time and redescribed based on the type material. Detailed digital illustrations of the examined type material and distributional map are also provided.